Laparoscopic surgical forceps with adjustable bending angle

Abstract

The invention discloses a laparoscopic surgical forceps with adjustable bending angle, comprising a pair of forceps arms, a forceps body and a pair of forceps handles, wherein the forceps arms are provided with at least one rotating joint, and the forceps handles are provided with a rotating joint adjuster, and the rotating joint adjuster adjusts the angle of the rotating joint by pulling a wire. The rotatable forceps arms of the invention can adapt to different pathological positions and structures during laparoscopic surgery, minimize the opening of surgical channels, and solve the problem that the existing laparoscopic forceps cannot adjust the bending, resulting in a large opening of the surgical channel.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a laparoscopic surgical forceps with adjustable bending angle. Background Art

[0002] In clinical applications, some surgical instruments with large bending angles are often needed for tissue separation, clamping, vascular hemostasis and other operations, such as right-angle separation forceps, tracheal dilation forceps, side-curved needle holding forceps, vena cava forceps, renal pedicle forceps, etc. are widely used. At present, the above-mentioned instruments have the following shortcomings during use: First, in laparoscopic surgery, a trocar with a larger inner diameter is required to establish a surgical channel to facilitate the entry of surgical instruments. However, a surgical channel that is too large will not only increase the patient's pain, but also be detrimental to the patient's postoperative recovery, and will affect the aesthetics after recovery; secondly, the angle of the common curved surgical instruments is fixed and cannot be changed, which sometimes makes it inconvenient to operate during the human abdominal cavity operation, and the operator needs to compress the surrounding tissues to achieve the optimal angle. Therefore, it is particularly important to invent a surgical instrument that can not only meet the requirements of free adjustment of the angle under laparoscopy, but also reduce the trauma of the surgical channel. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of existing abdominal forceps that a relatively large surgical channel needs to be established when performing abdominal surgery and the existing angle cannot be adjusted, and a laparoscopic surgical forceps with adjustable bending angle is proposed.

[0004] The present invention adopts the following technical solution:

[0005] A laparoscopic surgical forceps with adjustable bending angle, the key of which is: comprising a pair of forceps arms, a forceps body and a pair of forceps handles, the forceps arms are provided with at least one rotating joint, the forceps handles are provided with a rotating joint adjuster, and the rotating joint adjuster adjusts the angle of the rotating joint by pulling a wire. The effect of this scheme is that the rotatable forceps arms can adapt to different pathological positions and structures during abdominal surgery, minimize the opening of the surgical channel, and solve the problem that the existing abdominal forceps cannot be bent, resulting in a large opening of the surgical channel.

[0006] As a preferred solution, the pliers arm is provided with three rotation joints, which are a first rotation joint, a second rotation joint and a third rotation joint which are arranged in sequence, and the first rotation joint is arranged close to the pliers body.

[0007] As a preferred solution, the first rotational joint, the second rotational joint and the third rotational joint are respectively controlled by separate pull wires;

[0008] The first rotating joints on the two clamp arms form a first rotating joint group, and the two corresponding pull wires merge to form a first joint pull wire group;

[0009] The second rotating joints on the two clamp arms form a second rotating joint group, and the two corresponding pull wires merge to form a second joint pull wire group;

[0010] The third rotating joints on the two clamp arms form a third rotating joint group, and the two corresponding pull wires merge to form a third joint pull wire group;

[0011] The pliers handle is provided with a first rotating joint adjuster corresponding to the first joint pull wire group;

[0012] The pliers handle is provided with a second rotating joint adjuster corresponding to the second joint pull wire group;

[0013] The clamp handle is provided with a third rotating joint adjuster corresponding to the third joint pull wire group.

[0014] The effect of this solution is that the three-level rotation of the forceps arm can facilitate surgery at various pathological locations and structures during abdominal surgery, facilitate the surgical operating space for the surgeon, and eliminate the need to open a larger surgical channel before the surgery.

[0015] As a preferred solution, the clamp body is a hollow tubular structure, the clamp body is provided with a first rotation axis near the outer end, the two clamp arms are rotatably hinged on the first rotation axis, the clamp body is provided with a second rotation axis near the inner end, the two clamp handles are rotatably hinged on the second rotation axis, a push rod is axially penetrated in the clamp body, and the clamp handle adjusts the opening of the clamp arm through the push rod penetrating the clamp body. The effect of this solution is: it is conducive to the operation, and the smart mechanical structure can facilitate the doctor to quickly adjust the opening of the clamp arm, saving time.

[0016] As a preferred solution, the outer walls of the first rotating shaft and the second rotating shaft are provided with evenly arranged wire through holes corresponding to the first joint wire group, the second joint wire group, and the third joint wire group, respectively, and the wires are connected to the rotating joint adjuster after passing through the first rotating shaft and the second rotating shaft from the clamp arm in sequence. The effect of this solution is that the wires are uniformly arranged without affecting the surgical operation.

[0017] As a preferred solution, the two clamp handles are provided with a push rod assist mechanism, which includes two push rod bars and a convex spring bar, one end of the push rod bar is rotatably connected to the inner side of the clamp handle, and the other end is hinged to the inner end of the push rod, and the two ends of the convex spring bar are respectively fixed to the inner side of the two clamp handles, and the push rod can be pushed and pulled by holding the two clamp handles, so as to adjust the opening between the two clamp arms. The effect of this solution is that the setting of the convex spring bar can save labor, and at the same time facilitate the opening of the surgical forceps, which is beneficial to the doctor's surgical operation.

[0018] As a preferred solution, the two clamp handles are respectively provided with mutually adapted locking strips, which are opened by a locking switch. The effect of this solution is that the locking strips and the locking switch can facilitate doctors to use surgical forceps to perform tissue hemostasis and other operations, and also facilitate the placement and opening of surgical forceps.

[0019] As a preferred solution, the front ends of the two clamp arms are respectively provided with mutually adaptable meshing structures.

[0020] As a preferred solution, a locking piece is provided on the pliers handle corresponding to each of the rotary joint adjusters, and the locking piece is used to fix the rotation angle of the rotary joint adjuster.

[0021] Beneficial effects: The laparoscopic surgical forceps with adjustable bending angle of the present invention can minimize the opening of the surgical channel for abdominal surgery according to different pathological locations and structures, reduce the surgical trauma of the patient, thereby alleviating the patient's pain, and is beneficial to the patient's postoperative recovery and the aesthetics of the wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic structural diagram of the clamp arm 1 of the present invention being opened;

[0024] Figure 3 This is a schematic diagram of the rotary joint regulator 5 controlling the rotary joint 4 of the present invention;

[0025] Figure 4 for Figure 2 A simplified cross-sectional diagram of

[0026] Figure 5 It is a schematic diagram of the coordination between the clamp arm 1 and the pull wire;

[0027] Figure 6 It is a schematic diagram of the coordination principle between the first joint cable set L41, the second joint cable set L42, the third joint cable set L43, the first rotating shaft 6, the second rotating shaft 7, the first rotating joint regulator 51, the second rotating joint regulator 52, and the third rotating joint regulator 53;

[0028] Figure 7 is a schematic structural diagram of a locking member 13;

[0029] Figure 8 This is a schematic diagram of the coordination between the rotating joint 4 and the pull wire in Example 1;

[0030] Fig. 9 It is a schematic diagram of the coordination between the first rotation joint 41, the second rotation joint 42 and the third rotation joint 43 in Embodiment 1;

[0031] Fig.10 This is a schematic diagram of the coordination between the rotating joint 4 and the pull wire in Example 2;

[0032] Fig.11 4 is a diagram showing the coordination principle among the first rotational joint 41 , the second rotational joint 42 and the third rotational joint 43 in Embodiment 2. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0034] As attached Figure 1-7 As shown, the present invention invents a laparoscopic surgical forceps with adjustable bending angle, comprising a pair of forceps arms 1, a forceps body 2 and a pair of forceps handles 3, the forceps arms 1 are provided with at least one rotating joint 4, the forceps handles 3 are provided with a rotating joint adjuster 5, and the rotating joint adjuster 5 adjusts the angle of the rotating joint 4 by pulling a wire.

[0035] The pliers arm 1 is provided with three rotation joints 4 , which are a first rotation joint 41 , a second rotation joint 42 and a third rotation joint 43 which are arranged in sequence. The first rotation joint 41 is arranged close to the pliers body 2 .

[0036] The first rotational joint 41, the second rotational joint 42 and the third rotational joint 43 are respectively controlled by separate pull wires;

[0037] The first rotating joints 41 on the two clamp arms 1 form a first rotating joint group, and the two corresponding pull wires merge to form a first joint pull wire group L41;

[0038] The second rotating joints 42 on the two clamp arms 1 form a second rotating joint group, and the two corresponding pull wires merge to form a second joint pull wire group L42;

[0039] The third rotating joints 43 on the two clamp arms 1 form a third rotating joint group, and the two corresponding pull wires merge to form a third joint pull wire group L43;

[0040] The clamp handle 3 is provided with a first rotary joint adjuster 51 corresponding to the first joint pull wire group L41;

[0041] The clamp handle 3 is provided with a second rotary joint adjuster 52 corresponding to the second joint pull wire group L42;

[0042] The clamp handle 3 is provided with a third rotary joint adjuster 53 corresponding to the third joint pull wire group L43.

[0043] The pliers body 2 is a hollow tubular structure. A first rotating shaft 6 is provided near the outer end of the pliers body 2. Two pliers arms 1 are rotatably hinged on the first rotating shaft 6. A second rotating shaft 7 is provided near the inner end of the pliers body 2. Two pliers handles 3 are rotatably hinged on the second rotating shaft 7. A pushing rod 6 is axially penetrated inside the pliers body 2. The pliers handles 3 adjust the opening of the pliers arms 1 through the pushing rod 6 that penetrates the pliers body 2.

[0044] The outer walls of the first rotating shaft 6 and the second rotating shaft 7 are respectively provided with evenly arranged wire through holes corresponding to the first joint wire group L41, the second joint wire group L42, and the third joint wire group L43. The wires pass through the first rotating shaft 6 and the second rotating shaft 7 in sequence from the clamp arm 1 and are connected to the rotating joint adjuster 5.

[0045] In order to save effort and facilitate opening, the two clamp handles 3 are provided with a push rod assist mechanism, which includes two push rod bars 8 and a convex spring bar 9. One end of the push rod bar 8 is rotatably connected to the inner side of the clamp handle 3, and the other end is hinged to the inner end of the push rod 12. The two ends of the convex spring bar 9 are respectively fixed to the inner side of the two clamp handles 3. By holding the two clamp handles 3, the push rod 12 can be pushed and pulled, thereby adjusting the opening between the two clamp arms 1. In addition, the two clamp handles 3 are respectively provided with mutually adapted locking bars 10, and the two locking bars 10 are opened by the locking switch 11.

[0046] In addition, for the convenience of use, the front ends of the two forceps arms 1 are respectively provided with mutually adaptive meshing structures. The meshing structures can take various forms, such as frosted, serrated, etc., to meet the requirements of various surgical forms; the forceps handle 3 is respectively provided with a locking piece 13 corresponding to each rotating joint adjuster 5, and the locking piece 13 is used to fix the rotation angle of the rotating joint adjuster 5; at the same time, in order to adapt to surgical supporting instruments (such as surgical robots) in the future, the forceps body and the forceps handle can be changed with corresponding supporting structures without changing the forceps arm 1, and the above-mentioned changed implementation scheme also belongs to this patent.

[0047] In this solution, there are two preferred implementations of the clamp arm 1:

[0048] Embodiment 1: as attached Figure 8 and 9 As shown, a spring fixing groove is provided at the rotating joint 4 of the clamp arm 1, the compression spring is installed in the spring fixing groove, and the compression spring is connected with a pull wire. In a normal state, the clamp arm 1 is in a bent state, and the clamp arm 1 is gradually straightened by controlling the pull wire, thereby controlling the clamp arm 1 to adjust the rotation angle of the rotating joint 4 and realizing the state of the controlled clamp arm 1.

[0049] Embodiment 2: As attached Fig.10 and 11 As shown, the compression spring disposed inside the clamp arm 1 is pulled by a pull wire to adjust the rotation angle of the rotation joint 4 so as to control the bending angle of each rotation joint 4 of the clamp arm 1 .

[0050] During the use of the present invention, it is first necessary to use a trocar to establish a surgical channel on the patient's abdomen. After the channel is established, the turntable 5 is first rotated to drive the gears underneath to rotate. The number of winding wires of the turntable 5 is used to control the flexion and extension of any joint. The turntable 5 is used to rotate the rotating joint 4 of the clamp arm 1 to a horizontal state, and the surgical channel is passed to the surgical site. After entering the surgical site, the turntable 5 is rotated again to relax the spring of the rotating joint 4 to automatically deform, and the spring of the rotating joint 4 is used to push the rotating joint 4 to rotate. The rotation of the joint push arm 24 is used to realize the rotation of the joint 23, thereby realizing the change in the curvature of the clamp arm 1. After the operation is completed, the pull line is also tightened by the rotation of the turntable 5 to realize the above-mentioned reverse movement.

[0051] The structure can change the curvature of the abdominal forceps at will during use, thereby reducing the inner diameter of the surgical channel and reducing the pain of the patient. In addition, the above change can meet the needs of medical staff for different angles. In addition, medical surgical forceps, hemostatic forceps and other forceps can adopt the rotatable forceps arm of the present invention to facilitate medical operations, making operation and control more convenient, saving medical operation time, and alleviating patient pain to a certain extent.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A laparoscopic surgical forceps with adjustable bending angle, characterized in that: The invention comprises a pair of pliers arms (1), a pliers body (2) and a pair of pliers handles (3), wherein the pliers arms (1) are provided with at least one rotating joint (4), and the pliers handles (3) are provided with a rotating joint adjuster (5), and the rotating joint adjuster (5) adjusts the angle of the rotating joint (4) by pulling a wire; The pliers arm (1) is provided with three rotating joints (4), which respectively include a first rotating joint (41), a second rotating joint (42) and a third rotating joint (43) which are arranged in sequence, and the first rotating joint (41) is arranged close to the pliers body (2); The first rotating joint (41), the second rotating joint (42) and the third rotating joint (43) are respectively controlled by separate pull wires; The first rotating joints (41) on the two clamp arms (1) form a first rotating joint group, and the two corresponding pull wires merge to form a first joint pull wire group (L41); The second rotating joints (42) on the two clamp arms (1) form a second rotating joint group, and the two corresponding pull wires merge to form a second joint pull wire group (L42); The third rotating joints (43) on the two clamp arms (1) form a third rotating joint group, and the two corresponding pull wires merge to form a third joint pull wire group (L43); The clamp handle (3) is provided with a first rotating joint adjuster (51) corresponding to the first joint pull wire group (L41); The clamp handle (3) is provided with a second rotary joint adjuster (52) corresponding to the second joint pull wire group (L42); The clamp handle (3) is provided with a third rotation joint adjuster (53) corresponding to the third joint pull wire group (L43), and the three-level rotation of the clamp arm (1) can facilitate surgery on various pathological positions and structures in abdominal surgery, facilitate the surgical operation space of the surgeon, and does not require the opening of a larger surgical channel before the operation; The pliers body (2) is a hollow tubular structure. A first rotating shaft (6) is provided near the outer end of the pliers body (2). The two pliers arms (1) are rotatably hinged on the first rotating shaft (6). A second rotating shaft (7) is provided near the inner end of the pliers body (2). The two pliers handles (3) are rotatably hinged on the second rotating shaft (7). A pushing rod (12) is axially penetrated inside the pliers body (2). The pliers handles (3) adjust the opening of the pliers arms (1) through the pushing rod (12) penetrating the pliers body (2).

2. The laparoscopic surgical forceps with adjustable bending angle according to claim 1, characterized in that: The outer walls of the first rotating shaft (6) and the second rotating shaft (7) are provided with evenly arranged wire drawing holes corresponding to the first joint wire drawing group (L41), the second joint wire drawing group (L42), and the third joint wire drawing group (L43), respectively. The wire drawing passes through the first rotating shaft (6) and the second rotating shaft (7) in sequence from the clamp arm (1) and is connected to the rotating joint adjuster (5).

3. The laparoscopic surgical forceps with adjustable bending angle according to claim 1 or 2, characterized in that: The two pliers handles (3) are provided with a push rod assist mechanism opposite to each other, and the push rod assist mechanism comprises two push rod strips (8) and a convex spring strip (9). One end of the push rod strip (8) is rotatably connected to the inner side of the pliers handle (3), and the other end is hinged to the inner end of the push rod (12). The two ends of the convex spring strip (9) are respectively fixed to the inner side of the two pliers handles (3). By holding the two pliers handles (3), the push rod (12) can be pushed and pulled, thereby adjusting the opening between the two pliers arms (1).

4. The laparoscopic surgical forceps with adjustable bending angle according to claim 1, characterized in that: The two clamp handles (3) are respectively provided with mutually adapted locking strips (10), and the two locking strips (10) are opened by a locking switch (11).

5. The laparoscopic surgical forceps with adjustable bending angle according to claim 1, characterized in that: The front ends of the two clamp arms (1) are respectively provided with mutually adaptable meshing structures facing each other.

6. The laparoscopic surgical forceps with adjustable bending angle according to claim 1, characterized in that: The clamp handle (3) is provided with a locking piece (13) corresponding to each of the rotating joint adjusters (5), and the locking piece (13) is used to fix the rotation angle of the rotating joint adjuster (5).

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