A bendable electrocoagulation hook

Abstract

The utility model provides a bendable electrocoagulation hook, the head rack section of the transmission rod meshes with the driven gear for transmission, the tail rack section meshes with the driving gear for transmission, the transmission rod can slide forward and backward along the direction parallel to the axial direction of the rod body through the guidance of the guide groove fixed in the rod body; a mounting seat is fixed on one side of the wheel body of the head wheel, and a fan-shaped rack section is fixed on the other side. The head wheel meshes with the driven gear through its fan-shaped rack section, the hook body is fixed on the mounting seat, and the hook body is fixedly electrically connected to one end of the wire of the cable; a coupling hole is provided on the axle of the driving gear, and the coupling hole is connected to the input shaft body that provides the power to rotate the driving gear. The utility model has a simple structure, reliable performance, and space saving; it can be combined with a hand robot, and can also be connected to a manual lever to adjust the hook body angle with one hand, thereby improving surgical efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of minimally invasive surgical instruments, in particular to a bendable electrocoagulation hook. Background Art

[0002] With the rapid development of minimally invasive surgery today, laparoscopic surgery, especially single-port laparoscopy, is increasingly being used to achieve the most ideal minimally invasive effect, and the electrocoagulation hook is the main instrument for laparoscopic surgery. However, human tissue is a three-dimensional structure, and most electrocoagulation hooks are still straight structures. When the laparoscope is used to explore the deep field of vision, the cavity wall around the incision, and other special locations for freeing, cutting, and hemostasis, ordinary electrocoagulation hooks cannot reach the required surgical field due to special reasons such as position and angle. At present, most of the coping measures are to withdraw the electrocoagulation hook and bend it manually or replace it with other curved electrocoagulation hooks, which may reduce the life of electrocoagulation, or the numerous operating steps of some new electrocoagulation hooks are not enough to deal with emergencies.

[0003] For example, the common straight electrocoagulation hook needs to be bent manually when operating at special angles (such as around the operating port of a single-port laparoscope) or in tissue areas deep within the laparoscope; however, repeated bends greatly affect the service life of the electrocoagulation hook, and even a single external bend can render it scrapped.

[0004] Multi-head replaceable electrocoagulation hooks, such as the one disclosed in Chinese patent CN204192736U, can freely switch between different types of hook heads during surgery to meet actual needs, but the operating rod cannot be bent, and the instrument needs to be pulled out and plugged in multiple times, which is not enough to save or even gain surgical time, especially during complex adhesion lysis and rescue.

[0005] The multi-section rod and multi-joint electrocoagulation hook, such as an electrocoagulation cutting device disclosed in Chinese patent CN217310565U, has a multi-section rod connected by a ball socket. If a specific angle is required, the operating rod is folded with the ball socket as a fulcrum. However, it is impossible to independently complete the operation of changing the angle inside the chest cavity or the abdominal cavity, and still needs to be assisted by other instruments. For example, when sudden bleeding occurs and compression is required to stop bleeding or to pull adhesion tissue, it is difficult to assist in the folding operation in time.

[0006] The knob-type electrocoagulation hook, such as the steering electrocoagulation hook for surgery disclosed in Chinese patent CN21730565U, forms an angle by rotating the knob at the tail of the electrocoagulation rod to link the transmission shaft in the rod. However, the surgeon cannot complete the operation independently with one hand during the operation and needs the help of the other hand or an assistant. When rescuing or loosening complex adhesions, the surgeon has no time to operate the electrocoagulation rod. Utility Model Content

[0007] In view of the problems existing in the prior art, the utility model provides a bendable electrocoagulation hook to improve surgical efficiency and improve the surgeon's experience. The specific contents of the technical solution are as follows:

[0008] A bendable electrocoagulation hook comprises a hook body, a head wheel, a driven gear and a driving gear, and a transmission rod arranged from front to back;

[0009] The front part of the rod body of the transmission rod is fixed with a head rack section, and the rear part is fixed with a tail rack section. The head rack section is meshed with the driven gear through its rack for transmission, and the tail rack section is meshed with the driving gear through its rack for transmission. The transmission rod can slide forward and backward in a direction parallel to the axial direction of the rod body through the guidance of the guide groove fixed in the rod body.

[0010] The head wheel comprises a wheel body, a mounting seat is fixedly arranged on one side of the wheel body, and a sector-shaped rack segment is fixedly arranged on the other side. The head wheel is meshed with the driven gear through its sector-shaped rack segment. The hook body is fixed on the mounting seat, and the hook body is fixedly electrically connected to one end of the wire of the cable.

[0011] A coupling hole is provided on the axle of the driving gear, and the coupling hole is connected to an input shaft body that provides power for rotating the driving gear.

[0012] Furthermore, the input shaft body is a manual shift lever, which is L-shaped as a whole, with one part passing through the rod body and connected to the connecting hole of the driving gear, and the other part exposed outside the rod body.

[0013] Furthermore, a stop block is fixedly arranged on the outer wall of the rod body to prevent the manual lever from rotating beyond the limit.

[0014] Furthermore, the input shaft is a power output shaft of the surgical robot.

[0015] Furthermore, a sleeve hole is provided at the tail end of the hook body along its axis. After the wire of the cable is inserted into the sleeve hole, the tail section where the sleeve hole is located is compressed to clamp the wire in the sleeve hole to achieve a fixed electrical connection with the hook body; the mounting seat is provided with a seat hole for sleeve-connecting the tail of the hook body, and the mounting seat and the hook body are respectively provided with pin shaft holes. After the tail of the hook body is sleeved on the seat hole of the mounting seat, the pin shaft is passed through the pin shaft holes of the two to fix the hook body on the mounting seat.

[0016] Furthermore, a connecting hole and a guide groove are provided on the head wheel; the center line of the connecting hole is perpendicular to the axis line of the wheel body and the center line of the seat hole respectively; the guide groove is provided on one side surface of the wheel body of the head wheel, and one end of the guide groove is connected to one end of the connecting hole, and the other end is provided on the wheel body away from the mounting seat, and an upper anti-slip block and a side anti-slip block are provided on the upper and lower sides of the guide groove respectively.

[0017] It is also equipped with a corrugated sleeve for sealing and capable of providing a margin for the pitching and flipping of the hook body. The corrugated sleeve is cone-shaped as a whole, the top of the cone is sleeved on the mounting seat of the head wheel and the pin sleeve is pressed therein, and the bottom of the cone is sleeved on the end of the rod body.

[0018] Furthermore, a scale line is provided on the front of the rod body.

[0019] Furthermore, a stop block is fixedly provided on the rod body of the transmission rod and abuts against the guide groove in the rod body to limit the position.

[0020] Furthermore, a terminal guide section is axially extended from the end of the rear rack section of the transmission rod, and a guide rail groove matching the terminal guide section for sliding guidance is provided in the rod body.

[0021] The utility model has the advantages of simple structure, reliable performance and space saving; it can be combined with a hand robot and can also be connected with a manual lever to adjust the hook body angle with one hand, thereby improving surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention. A person of ordinary skill in the art can obtain other relevant drawings based on these drawings without making any creative effort.

[0023] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0024] Figure 2 An exploded view of the connection structure of the hook body, head wheel and cable;

[0025] Figure 3 It is a cross-sectional schematic diagram of the connection structure of the hook body, the head wheel and the cable;

[0026] Figure 4 It is a schematic diagram of the structure when the hook body is in an upward position;

[0027] Figure 5 Schematic diagram of equipping the rod body with a manual lever and installing a corrugated sleeve on the head.

[0028] Reference numerals in the figures:

[0029] Hook body 1; sleeve hole 101; pin hole 102; head wheel 2; wheel body 20; mounting seat 21; seat hole 211; pin hole 212; connecting hole 201; guide groove 202; upper anti-slip block 2021; side anti-slip block 2022; driven gear 3; driving gear 4; connecting hole 41; transmission rod 5; head rack section 51; tail rack section 52; end guide section 53; stop block 54; guide rail groove 6; guide rail groove 7; cable 8; wire 81; insulating sleeve 82; corrugated sleeve 9; rod body 10; manual lever 11; stop block 111; scale line 12. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0031] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the application product is usually placed when in use, or is the orientation or position relationship commonly understood by technical personnel in this field. It is only for the convenience of describing the present invention or simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] The term "plurality" in the present invention refers to more than two (including two). The terms "first", "second" and the like are only used to distinguish descriptions and should not be understood as indicating or implying relative importance.

[0033] Unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] In order to facilitate the display of the internal main structure, Figures 1 to 4 The rod body 10 is hidden.

[0036] like Figure 1 As shown, the utility model includes a hook body 1, a head wheel 2, a driven gear 3 and a driving gear 4 arranged from front to back, and also includes a transmission rod 5.

[0037] The front part of the rod body of the transmission rod 5 is fixedly provided with a head rack section 51, and the rear part is fixedly provided with a tail rack section 52. The head rack section 51 is meshed with the driven gear 3 through its rack, and the tail rack section 52 is meshed with the driving gear 4 through its rack. The transmission rod 5 can slide forward and backward in a direction parallel to the axial direction of the rod body through the guidance of the guide grooves 6 and 7 fixedly provided in the rod body.

[0038] The head wheel 2 includes a wheel body 20, a mounting seat 21 is fixedly provided on one side of the wheel body 20, and a fan-shaped rack segment is fixedly provided on the other side; preferably, the arc range of the fan-shaped rack segment is greater than 90 degrees and less than or equal to 100 degrees, so as to save the space occupied by the head wheel and avoid interference with the head rack segment 51 of the transmission rod 5. The head wheel 2 is meshed with the driven gear 3 through its fan-shaped rack segment, the hook body 1 is fixed on the mounting seat 21, and the hook body 1 is fixedly electrically connected to one end of the wire of the cable 8, and the other end of the wire is connected to the electrical connection component in the rod body (not shown in the figure), and then electrically connected to the outside through the electrical connection component.

[0039] The head wheel 2, the driven gear 3 and the driving gear 4 are rotatably connected to the rod body through their own wheel axles, and the wheel axles of the three are parallel to each other.

[0040] The above is the basic structural design of the utility model. By rotating the driving gear 4, the transmission chain through the transmission rod 5, the driven gear 3 and the head wheel 2 drives the hook body 1 to achieve a pitch flip within 90 degrees, thereby changing the angle of the hook body 1 relative to the rod body.

[0041] Furthermore, in order to enhance the stability of the meshing transmission structure, as Figure 1 As shown, the transmission rod 5 further axially extends a terminal guide section 53 at the end of the rear rack section 52 , and a guide rail groove 7 matching with the terminal guide section 53 for sliding guidance is provided in the rod body.

[0042] Furthermore, since the arc of the sector rack segment on the head wheel 2 is limited, in order to prevent the head wheel 2 from rotating beyond the limit and causing disengagement from the driven gear 3 or damage to the rack, a stop block 54 is fixed on the rod body of the transmission rod 5 to abut against the guide groove 7 in the rod body to limit the position.

[0043] A coupling hole 41 is provided on the axle of the driving gear 4. The coupling hole 41 may be Figure 1 The inner square hole shown in the figure may also be an inner pentagonal hole, etc., which is used to connect the input shaft body that provides power to rotate the driving gear 4. The so-called input shaft body may be a manual lever 11 (such as Figure 5 As shown in the figure, the relatively simple manual lever 11 is in an L-shape as a whole, with one part passing through the rod body 10 and connected to the connecting hole 41 of the driving gear 4, and the other part exposed outside the rod body. When the hook body 1 is parallel to the axis of the rod body as a whole, the part of the manual lever 11 outside the rod body can be smoothly attached to the outer wall of the rod body 10. When the angle of the hook body 1 needs to be adjusted, the user can adjust the manual lever 11 with his thumb with one hand.

[0044] The so-called input shaft may also be a power output shaft of the surgical robot, that is, the utility model may also be combined with the surgical robot.

[0045] Preferably, when the manual lever 11 is used, a stopper 111 is fixedly provided on the outer wall of the rod body 10 to prevent the manual lever 11 from rotating beyond the limit.

[0046] Combination Figure 2 , Figure 3 and Figure 4 As shown, a sleeve hole 101 is formed at the tail end of the hook body 1 along its axis. After the wire 81 of the cable 8 is inserted into the sleeve hole 101, the tail section where the sleeve hole 101 is located is compressed to clamp the wire 81 in the sleeve hole 101 and achieve a fixed electrical connection with the hook body 1.

[0047] Furthermore, the mounting seat 21 is provided with a seat hole 211 for sleeve-joining the tail of the hook body 1, and the mounting seat 21 and the hook body 1 are provided with corresponding pin holes 212 and 102, respectively. After the tail of the hook body 1 is sleeved in the seat hole 211 of the mounting seat 21, the hook body 1 is fixed to the mounting seat 21 by passing the pin through the pin holes of the two.

[0048] Furthermore, a connecting hole 201 and a guide groove 202 are also provided on the head wheel 2, wherein the connecting hole 201 is provided on the wheel body located at the bottom of the mounting seat 21, and is vertically interconnected with the seat hole 211 of the mounting seat 21. To facilitate processing and passing of cables, and to facilitate thorough disinfection, the connecting hole 201 also penetrates the wheel body of the head wheel 2, and the hole center line of the connecting hole 201 is perpendicular to the axial center line of the wheel body and the hole center line of the seat hole 211, respectively; the guide groove 202 is provided on one side surface of the wheel body of the head wheel 2, and one end of the guide groove 202 is connected to one end of the connecting hole 201, and the other end is provided on the wheel body away from the mounting seat 21, and in order to prevent the cable 8 from falling out of the guide groove or interfering when the head wheel 2 rotates, an upper anti-slip block 2021 and a side anti-slip block 2022 are respectively provided on the upper and lower sides of the guide groove 202, see Figure 4 When the hook body 1 turns over, the upper anti-slip block 2021 not only prevents the cable 8 from falling out of the guide groove, but also supports the cable 8 to make it bend appropriately to avoid interference with the gears due to accumulation.

[0049] The cable 8 is first passed through the connecting hole 201 and out of the seat hole 211 of the mounting seat 21, and then the wire 81 of the cable 8 is inserted into the sleeve hole 101 of the hook body 1, and then the tail section where the sleeve hole 101 is located is compressed to clamp the wire 81 in the sleeve hole 101 to achieve a fixed electrical connection with the hook body 1; then the cable 8 is pulled back and the tail part of the hook body 1 is sleeved on the seat hole 211 of the mounting seat 21, and then the pin shaft is passed through the pin shaft holes of the two to fix the hook body 1 on the mounting seat 21.

[0050] Further, if Figure 5As shown, it is also equipped with a corrugated sleeve 9 for sealing and capable of providing a margin for the pitching and flipping of the hook body 1. The corrugated sleeve 9 is conical as a whole, and the top of the cone is sleeved on the mounting seat 21 of the head wheel 2, and the bottom of the cone is sleeved on the end of the rod body; preferably, when the top of the cone of the corrugated sleeve 9 is sleeved on the mounting seat 21 of the head wheel 2, the pin shaft sleeve is also pressed therein, thereby helping to prevent the pin shaft from falling off.

[0051] Furthermore, a scale line 12 is also provided at the front of the rod body 10, so that when the intraoperative operation requires precise requirements on the resection range and suture width, the size can be directly referenced and measured.

[0052] The cable 8 can be fixed at other locations inside the rod body by fixing structures at appropriate positions, which will not be described in detail herein.

[0053] It is recommended that the rod body 10 be configured as a split structure consisting of two parts and fixed by bolts to facilitate the installation and disassembly of the main structure of the utility model, which will not be described in detail herein.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bendable electrocoagulation hook, characterized in that: It includes a hook body, a head wheel, a driven gear and a driving gear, and a transmission rod arranged from front to back; The front part of the rod body of the transmission rod is fixed with a head rack section, and the rear part is fixed with a tail rack section. The head rack section is meshed with the driven gear through its rack for transmission, and the tail rack section is meshed with the driving gear through its rack for transmission. The transmission rod can slide forward and backward in a direction parallel to the axial direction of the rod body through the guidance of the guide groove fixed in the rod body. The head wheel comprises a wheel body, a mounting seat is fixedly arranged on one side of the wheel body, and a sector-shaped rack segment is fixedly arranged on the other side. The head wheel is meshed with the driven gear through its sector-shaped rack segment. The hook body is fixed on the mounting seat, and the hook body is fixedly electrically connected to one end of the wire of the cable. A coupling hole is provided on the axle of the driving gear, and the coupling hole is connected to an input shaft body that provides power for rotating the driving gear.

2. A bendable electrocoagulation hook as claimed in claim 1, characterized in that: The input shaft body is a manual lever, which is L-shaped as a whole, with one part inserted into the rod body and connected with the connecting hole of the driving gear, and the other part exposed outside the rod body.

3. A bendable electrocoagulation hook as claimed in claim 2, characterized in that: A stop block is fixedly arranged on the outer wall of the rod body to prevent the manual lever from rotating beyond the limit.

4. A bendable electrocoagulation hook as claimed in claim 1, characterized in that: The input shaft is a power output shaft of the surgical robot.

5. The bendable electrocoagulation hook according to claim 1, characterized in that: A sleeve hole is provided at the tail end of the hook body along its axis. After the wire of the cable is inserted into the sleeve hole, the tail section where the sleeve hole is located is compressed to clamp the wire in the sleeve hole to achieve a fixed electrical connection with the hook body; the mounting seat is provided with a seat hole for sleeve-connecting the tail of the hook body, and the mounting seat and the hook body are respectively provided with pin shaft holes. After the tail of the hook body is sleeved on the seat hole of the mounting seat, the pin shaft is passed through the pin shaft holes of the two to fix the hook body on the mounting seat.

6. A bendable electrocoagulation hook as claimed in claim 5, characterized in that: A connecting hole and a guide groove are also provided on the head wheel; the connecting hole penetrates through the wheel body located at the bottom of the mounting seat and is vertically connected with the seat hole of the mounting seat; the guide groove is provided on one side surface of the wheel body of the head wheel, and one end of the guide groove is connected with one end of the connecting hole, and the other end is provided on the wheel body away from the mounting seat, and an upper anti-slip block and a side anti-slip block are respectively provided on the upper and lower sides of the guide groove.

7. A bendable electrocoagulation hook as claimed in claim 5, characterized in that: It is also equipped with a corrugated sleeve for sealing and capable of providing a margin for the pitching and flipping of the hook body. The corrugated sleeve is cone-shaped as a whole, the top of the cone is sleeved on the mounting seat of the head wheel and the pin sleeve is pressed therein, and the bottom of the cone is sleeved on the end of the rod body.

8. The bendable electrocoagulation hook according to claim 1, characterized in that: There are scale lines on the front of the rod body.

9. The bendable electrocoagulation hook according to claim 1, characterized in that: A stop block is also fixed on the rod body of the transmission rod and is abutted against the guide groove in the rod body to limit position.

10. The bendable electrocoagulation hook according to claim 1, characterized in that: The transmission rod also axially extends a terminal guide section at the end of the rear rack section, and a guide rail groove matching the terminal guide section for sliding guidance is provided in the rod body.

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