Subclavian approach laparoscopic surgery curved separation forceps

Abstract

The utility model discloses a subclavian approach laparoscopic surgical curved separation forceps, which relates to the field of medical devices, including a forceps head, a pull rod, a forceps rod, a fixed handle and a movable handle, wherein the forceps head includes a fixed forceps head and a movable forceps head hinged to the fixed forceps head through a hinge mechanism, and the rear end of the hinge mechanism is connected to the pull rod; the pull rod is provided outside the pull rod, the front end of the forceps rod is detachably connected to the forceps head, the rear end of the forceps rod is detachably connected to the movable handle, the rear end of the pull rod passes through the forceps rod and is connected to the movable handle, the fixed handle and the movable handle are rotatably connected through a fixed pin, and the pull rod is driven by the movable handle to extend and retract along the forceps rod, so that the movable forceps head is opened and closed relative to the fixed forceps head; the tips of the movable forceps head and the fixed forceps head are tilted upward relative to the connection between the two, and the tilting angle is greater than or equal to 90°. The tip of the forceps head of the utility model is more slender, and when the movable forceps head is opened relative to the fixed forceps head, a larger surgical field of view can be obtained, which helps to improve surgical efficiency and shorten surgical time.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to curved separation forceps for subclavian approach laparoscopic surgery. Background Art

[0002] Separation forceps are a kind of medical device commonly used in surgical operations. Their function is to grab diseased tissues and stretch human tissues near the diseased parts to provide a surgical field of view. Existing separation forceps will limit the surgical field of view due to the deep surgical site, which is not conducive to the progress of the operation. Conventional separation forceps cannot cope well with different conditions. The lack of surgical field of view leads to repeated grabbing of diseased tissues during the operation, which is forced to prolong the operation time, increase the surgical risk, and reduce the patient experience. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a curved separation forceps for laparoscopic surgery via a subclavian approach. Compared with conventional separation forceps, the overall length of the instrument is shortened, the working distance is reduced, the operation is more stable, and the length of the forceps head is increased. A thinner forceps tip is used, which is conducive to fine separation, a larger unilateral separation range, and improved separation efficiency. In addition, the arc of the forceps head is increased, which avoids the chopstick effect of mutual interference of instruments in single-port surgery via a subclavian approach without air injection, avoids blocking the endoscopic field of view, and can cross the trachea to perform contralateral thyroid surgery and central area cleaning, which helps to improve surgical efficiency and shorten surgical time.

[0004] The purpose of the utility model is achieved through the following technical scheme: this subclavian approach laparoscopic surgery curved separation forceps, including a forceps head, a pull rod, a forceps rod, a fixed handle and a movable handle, the forceps head including a fixed forceps head and a movable forceps head hinged to the fixed forceps head through a hinge mechanism, the rear end of the hinge mechanism is connected to the pull rod; the pull rod is arranged outside the pull rod, the front end of the forceps rod is detachably connected to the forceps head, the rear end of the forceps rod is detachably connected to the movable handle, the rear end of the pull rod passes through the forceps rod and is connected to the movable handle, the fixed handle and the movable handle are rotatably connected through a fixing pin, the pull rod is driven by the movable handle to extend and retract along the forceps rod, so that the movable forceps head is opened and closed relative to the fixed forceps head; the tips of the movable forceps head and the fixed forceps head are tilted upward relative to the connection between the two, and the tilting angle is greater than or equal to 90°.

[0005] As a further technical solution, an installation channel is opened on the movable handle along the length direction of the pull rod, and a ball connecting groove is opened at the end of the installation channel. The clamp rod and the pull rod are inserted into the installation channel and cooperate with the ball connecting groove through a connecting ball arranged at the rear end of the pull rod.

[0006] As a further technical solution, a button hole is opened on the movable handle perpendicular to the pull rod, and the button hole is connected to the installation channel. The button hole is used to install the pressing assembly, and the clamp rod is inserted into the installation channel and rests on the pressing assembly.

[0007] As a further technical solution, the pressing assembly includes a button and a buckle fixed at the bottom of the button by a buckle nut. After the buckle is inserted into the button hole, the button is exposed from the button hole, and a button spring is arranged in the button hole for lifting the buckle. A through hole is provided at the bottom of the buckle for the connecting joint at the rear end of the clamp rod to pass through, and an annular groove is provided on the clamp rod near the connecting joint for stopping at the mouth of the through hole.

[0008] As a further technical solution, the outer diameter of the annular groove is smaller than the inner diameter of the through hole. In the natural state, the button spring pushes up the buckle, so that the end face of the annular groove rests against the mouth of the through hole, thereby clamping the clamp rod; when the button spring is pressed, the through hole moves downward and becomes flush with the end face of the annular groove, so that the clamp rod is pulled out of the through hole.

[0009] As a further technical solution, it also includes a wheel assembly, the rear end of which is relatively rotatably mounted on the movable handle, the front end of which is mounted on the clamp rod, a bearing is arranged on the inner wall of the wheel assembly, a positioning protrusion is arranged on the inner ring of the bearing, and a positioning groove is opened at a position on the clamp rod corresponding to the wheel assembly, and the positioning protrusion is embedded in the positioning groove, so that when the wheel assembly rotates, the clamp rod is driven to rotate.

[0010] As a further technical solution, a flushing joint is arranged on the clamp rod near the rotating wheel assembly, and a thread is arranged on the head of the flushing joint.

[0011] As a further technical solution, a pliers rod joint for connecting to a pliers rod is provided at the rear end of the pliers head, and a pliers head connecting groove is provided on the pliers rod at a position corresponding to the pliers rod joint, so that the pliers head and the pliers rod can be matched in a slot-like manner; the tip of the pliers head adopts a blunt round head, and the teeth that engage with the movable pliers head and the fixed pliers head are round-head teeth.

[0012] As a further technical solution, the forceps head adopts a curved separation forceps, a non-invasive grasping forceps, or a right-angle separation forceps, wherein the front end of the curved separation forceps is arc-shaped with a central angle of 105°, the front end of the non-invasive grasping forceps adopts a blunt arc structure, and the front end of the right-angle separation forceps adopts a right-angle structure.

[0013] The beneficial effects of the utility model are:

[0014] 1. The forceps head adopts a tilting structure, and the tilting angle is greater than or equal to 90°, making the tip of the forceps head more slender. When the movable forceps head is opened relative to the fixed forceps head, a larger surgical field of view can be obtained, which helps to improve surgical efficiency and shorten surgical time;

[0015] 2. The connection between the forceps rod and the movable handle is controlled by the pressing component, which can be quickly installed and disassembled, and the forceps head can be flexibly replaced according to different surgical needs;

[0016] 3. The forceps rod is driven to rotate through the rotating wheel assembly, which is convenient for flexible adjustment of the direction angle of the forceps head during surgery and has better versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the connection structure between the pull rod and the clamp head in the utility model.

[0019] Figure 3 This is a cross-sectional view of the connection structure between the pull rod and the clamp head in the utility model.

[0020] Figure 4 It is a structural schematic diagram of the clamp rod in the utility model.

[0021] Figure 5 The utility model is a schematic diagram of the structure after the clamp rod, the pull rod and the clamp head are assembled.

[0022] Figure 6 It is a structural schematic diagram of the movable handle in the utility model.

[0023] Figure 7 It is a schematic diagram of the connection structure between the movable handle and the fixed handle in the utility model.

[0024] Figure 8 It is a structural schematic diagram of the pressing component in the utility model.

[0025] Fig. 9 It is a structural schematic diagram of the cooperation between the roller assembly and the positioning groove in the utility model.

[0026] Fig.10 It is a structural schematic diagram of the bearing in the utility model.

[0027] Fig.11 It is a structural schematic diagram of the middle bend separation pliers of the utility model.

[0028] Fig.12 It is a schematic structural diagram of the non-invasive grasping forceps in the utility model.

[0029] Fig.13 It is a structural schematic diagram of the right-angle separation pliers in the utility model.

[0030] Explanation of the reference numerals in the accompanying drawings: pliers head 1, movable pliers head 1-1, fixed pliers head 1-2, hinge mechanism 1-3, pliers rod joint 1-4, pull rod 2, connecting ball 2-1, pliers rod 3, connecting joint 3-1, annular groove 3-2, positioning groove 3-3, pliers head connecting groove 3-4, fixed handle 4, movable handle 5, ball connecting groove 5-1, button hole 5-2, installation channel 5-3, fixing pin 6, flushing joint 7, pressing assembly 8, buckle 8-1, buckle nut 8-2, button spring 8-3, through hole 8-4, button 8-5, rotating wheel assembly 9, bearing 9-1, positioning protrusion 9-2, curved separation pliers 10, non-invasive grasping pliers 11, right-angle separation pliers 12. DETAILED DESCRIPTION

[0031] The utility model will be described in detail below with reference to the accompanying drawings:

[0032] Example: As shown in the attached Figures 1 to 13 As shown, the curved separation forceps for subclavian approach laparoscopic surgery include a forceps head 1, a movable forceps head 1-1, a fixed forceps head 1-2, a hinge mechanism 1-3, a forceps rod joint 1-4, a pull rod 2, a connecting ball 2-1, a forceps rod 3, a connecting joint 3-1, an annular groove 3-2, a positioning groove 3-3, a forceps head connecting groove 3-4, a fixed handle 4, a movable handle 5, a ball connecting groove 5-1, a button hole 5-2, a mounting channel 5-3, a fixing pin 6, a flushing joint 7, a pressing assembly 8, a buckle 8-1, a buckle nut 8-2, a button spring 8-3, a through hole 8-4, a button 8-5, a rotating wheel assembly 9, a bearing 9-1, a positioning protrusion 9-2, a curved separation forceps 10, a non-invasive grasping forceps 11 and a right-angle separation forceps 12.

[0033] Reference Figure 2 The clamp head 1 includes a movable clamp head 1-1 and a fixed clamp head 1-2, the movable clamp head 1-1 and the fixed clamp head 1-2 are hinged by a hinge mechanism, and the rear end of the hinge mechanism 1-3 is connected to the pull rod 2. Figure 3 , 4 As shown in Figure 5, a clamp rod 3 is arranged outside the pull rod 2, a clamp rod joint 1-4 is arranged at the rear end of the clamp head 1, and a clamp head connecting groove 3-4 is opened at the front end of the clamp rod 3 corresponding to the clamp rod joint 1-4, so that the clamp head 1 and the clamp rod 3 are connected through a card slot type matching (for flexible installation and disassembly).

[0034] like Figure 6 , 7 As shown, the movable handle 5 is provided with an installation channel 5-3 along the length direction of the pull rod 2, and a ball connection groove 5-1 is provided at the end of the installation channel 5-3. The clamp rod 3 and the pull rod 2 are inserted into the installation channel 5-3, and the connection ball 2-1 provided at the rear end of the pull rod 2 cooperates with the ball connection groove 5-1 (as shown in FIG. Figure 1 Further, a button hole 5-2 is vertically formed on the movable handle 5 relative to the pull rod 2, and the button hole 5-2 is connected to the installation channel 5-3. The button hole 5-2 is used to install the pressing component 8. The clamp rod 3 is inserted into the installation channel 5-3 and abuts against the pressing component 8.

[0035] like Figure 8As shown, the pressing assembly 8 includes a button 8-5 and a buckle 8-1 fixed at the bottom of the button 8-5 by a buckle nut 8-2. After the buckle 8-1 is inserted into the button hole 5-2, the button 8-5 is exposed from the button hole 5-2. A button spring 8-3 is arranged at the bottom of the button hole 5-2, and the button spring 8-3 can lift the buckle 8-1. A through hole 8-4 is provided at the bottom of the buckle 8-1 for the connection joint 3-1 at the rear end of the clamp rod 3 to pass through. An annular groove 3-2 is provided on the clamp rod 3 near the connection joint 3-1, which can be stopped at the mouth of the through hole 8-4. Preferably, the outer diameter of the annular groove 3-2 is smaller than the inner diameter of the through hole 8-4. In the natural state, the button spring 8-3 pushes up the buckle 8-1, so that the end surface of the annular groove 3-2 abuts against the mouth of the through hole 8-4, thereby clamping the pliers rod 3; when the button spring 8-3 is pressed, the through hole 8-4 moves downward and is flush with the end surface of the annular groove 3-2, so that the pliers rod 3 can be pulled out of the through hole 8-4. The rear end of the pliers rod 3 is detachably connected to the movable handle 5, and the rear end of the pull rod 2 is also detachably connected to the movable handle 5 after passing through the pliers rod 3. The fixed handle 4 and the movable handle 5 are rotatably connected through the fixed pin 6. The pull rod 2 is driven to extend and retract along the pliers rod 3 through the movable handle 5, so that the movable pliers head 1-1 opens and closes relative to the fixed pliers head 1-2.

[0036] Reference Figure 7 , 9 10. The rear end of the wheel assembly 9 is relatively rotatably sleeved on the movable handle 5, and the front end of the wheel assembly 9 is sleeved on the clamp rod 3 (i.e., the clamp rod 3 penetrates the wheel assembly 9). A bearing 9-1 is installed on the inner wall of the wheel assembly 9. The inner ring of the bearing 9-1 has six positioning protrusions 9-2 evenly distributed along the circumferential direction. The outer wall of the clamp rod 3 is also evenly distributed with six positioning grooves 3-3 at positions corresponding to the wheel assembly 9. The positioning protrusions 9-2 are embedded in the positioning grooves 3-3 one by one, so that when the wheel assembly 9 rotates, the clamp rod 3 is driven to rotate. Preferably, a flushing joint 7 is provided on the clamp rod 3 near the wheel assembly 9, and the head of the flushing joint 7 is provided with threads for easy connection to an external flushing pipeline.

[0037] Preferably, if Figure 2 , 3 As shown, the tips of the movable pliers head 1-1 and the fixed pliers head 1-2 are tilted upward relative to the connection between the two, and the tilting angle is greater than or equal to 90 degrees. The tip of the pliers head 1 adopts a blunt round head, and the teeth of the movable pliers head 1-1 and the fixed pliers head 1-2 that engage with each other adopt round head teeth to avoid damage to the affected tissue during grasping.

[0038] like Fig.11 As shown, the pliers head 1 can be a curved separation pliers 10, the front end of the curved separation pliers 10 is an upwardly tilted arc, and the center angle of the arc is 105°. Fig.12As shown, the forceps head 1 can also adopt a non-invasive grasping forceps 11, and the front end of the non-invasive grasping forceps 11 adopts a blunt arc structure to minimize the damage to the affected tissue during grasping, thereby achieving non-invasive grasping. Fig.13 As shown, the pliers head 1 can also adopt a right-angle separation pliers 12, and the front end of the right-angle separation pliers 12 adopts a right-angle structure.

[0039] The working process of the utility model is as follows: before the operation, select the appropriate forceps head 1 according to different needs, press the button 8-5 of the pressing assembly 8, so that the buckle 8-1 moves downward, compresses the button spring 8-3, and the through hole 8-4 also moves downward and is flush with the end surface of the annular groove 3-2, so that the forceps rod 3 can be pulled out from the through hole 8-4, and flexible replacement is achieved. During the operation, the movable handle 5 rotates relative to the fixed handle 4, which can drive the pull rod 2, thereby controlling the opening and closing movement of the movable forceps head 1-1 relative to the fixed forceps head 1-2.

[0040] It is understandable that, for those skilled in the art, any equivalent replacement or change to the technical solution and the concept of the utility model should fall within the protection scope of the claims attached to the utility model.

Claims

1. Subclavian approach laparoscopic surgery curved separation forceps, characterized by: The invention comprises a pliers head (1), a pull rod (2), a pliers rod (3), a fixed handle (4) and a movable handle (5), wherein the pliers head (1) comprises a fixed pliers head (1-2) and a movable pliers head (1-1) hingedly connected to the fixed pliers head (1-2) via a hinge mechanism (1-3), the rear end of the hinge mechanism (1-3) is connected to the pull rod (2); the pliers rod (3) is arranged outside the pull rod (2), the front end of the pliers rod (3) is detachably connected to the pliers head (1), and the rear end of the pliers rod (3) is connected to the movable handle (5). The connection is detachable, the rear end of the pull rod (2) passes through the clamp rod (3) and is connected to the movable handle (5), the fixed handle (4) and the movable handle (5) are rotatably connected via a fixed pin (6), the pull rod (2) is driven by the movable handle (5) to extend and retract along the clamp rod (3), so that the movable clamp head (1-1) opens and closes relative to the fixed clamp head (1-2); the tips of the movable clamp head (1-1) and the fixed clamp head (1-2) are tilted upward relative to the connection between the two, and the tilting angle is greater than or equal to 90°.

2. The curved separation forceps for subclavian approach laparoscopic surgery according to claim 1, characterized in that: The movable handle (5) is provided with a mounting channel (5-3) along the length direction of the pull rod (2), and a ball connection groove (5-1) is provided at the end of the mounting channel (5-3). The clamp rod (3) and the pull rod (2) are inserted into the mounting channel (5-3) and matched with the ball connection groove (5-1) through a connection ball (2-1) arranged at the rear end of the pull rod (2).

3. The curved separation forceps for subclavian approach laparoscopic surgery according to claim 2, characterized in that: The movable handle (5) is provided with a button hole (5-2) perpendicular to the pull rod (2), and the button hole (5-2) is connected to the installation channel (5-3). The button hole (5-2) is used to install a pressing component (8), and the clamp rod (3) is inserted into the installation channel (5-3) and abuts against the pressing component (8).

4. The curved separation forceps for subclavian approach laparoscopic surgery according to claim 3, characterized in that: The pressing assembly (8) comprises a button (8-5) and a buckle (8-1) fixed to the lower part of the button (8-5) by a buckle nut (8-2); after the buckle (8-1) is inserted into the button hole (5-2), the button (8-5) is exposed from the button hole (5-2); and a button spring (8-3) is arranged in the button hole (5-2) for lifting the buckle (8-1); a through hole (8-4) is provided at the lower part of the buckle (8-1) for the connecting joint (3-1) at the rear end of the clamp rod (3) to pass through; and an annular groove (3-2) is provided on the clamp rod (3) near the connecting joint (3-1) for stopping at the mouth of the through hole (8-4).

5. The curved separation forceps for subclavian approach laparoscopic surgery according to claim 4, characterized in that: The outer diameter of the annular groove (3-2) is smaller than the inner diameter of the through hole (8-4); in a natural state, the button spring (8-3) pushes up the buckle (8-1), so that the end surface of the annular groove (3-2) abuts against the mouth of the through hole (8-4), thereby clamping the clamp rod (3); when the button spring (8-3) is pressed, the through hole (8-4) moves downward and is flush with the end surface of the annular groove (3-2), so that the clamp rod (3) is pulled out of the through hole (8-4).

6. The curved separation forceps for subclavian approach laparoscopic surgery according to claim 5, characterized in that: The invention also comprises a rotating wheel assembly (9), the rear end of which is relatively rotatably sleeved on the movable handle (5), the front end of which is sleeved on the clamp rod (3), the inner wall of the rotating wheel assembly (9) is provided with a bearing (9-1), the inner ring of the bearing (9-1) is provided with a positioning protrusion (9-2), a positioning groove (3-3) is provided on the clamp rod (3) at a position corresponding to the rotating wheel assembly (9), and the positioning protrusion (9-2) is embedded in the positioning groove (3-3), so that when the rotating wheel assembly (9) rotates, the clamp rod (3) is driven to rotate.

7. The curved separation forceps for subclavian approach laparoscopic surgery according to claim 6, characterized in that: A flushing joint (7) is arranged on the clamp rod (3) near the rotating wheel assembly (9), and a thread is arranged on the head of the flushing joint (7).

8. The curved separation forceps for subclavian approach laparoscopic surgery according to claim 1, characterized in that: The rear end of the pliers head (1) is provided with a pliers rod joint (1-4) for connecting to a pliers rod (3); a pliers head connecting groove (3-4) is provided on the pliers rod (3) at a position corresponding to the pliers rod joint (1-4), so that the pliers head (1) and the pliers rod (3) are matched in a slot-like manner; the tip of the pliers head (1) is a blunt round head, and the teeth that engage with each other between the movable pliers head (1-1) and the fixed pliers head (1-2) are round head teeth.

9. The curved separation forceps for subclavian approach laparoscopic surgery according to claim 1, characterized in that: The forceps head (1) is a curved separation forceps (10) or a non-invasive grasping forceps (11) or a right-angle separation forceps (12), wherein the front end of the curved separation forceps (10) is arc-shaped with a center angle of 105°, the front end of the non-invasive grasping forceps (11) is a blunt arc structure, and the front end of the right-angle separation forceps (12) is a right-angle structure.

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