Multifunctional nerve monitoring separating forceps

Abstract

A pair of multifunctional nerve monitoring separating forceps relates to the field of medical instruments and comprises an upper forceps mouth, a lower forceps mouth, an extension rod, a handle, a drainage suction tube, a monitoring probe and a driving mechanism, and the upper forceps mouth and the lower forceps mouth can rotate relative to each other and are arranged at the front end of the extension rod; a rotating shaft for rotating the handle is arranged at the tail end of the extension rod; the two handles are symmetrically distributed on the two sides of the extension rod, a sleeve is arranged at the front end of each handle, and the rotating shaft is sleeved with the handles through the sleeves; the liquid drainage suction pipe is arranged on the upper clamp mouth and is connected with external liquid suction equipment through a guide pipe; the monitoring probe is arranged on the lower forceps mouth and connected with external nerve monitoring equipment through a wire. By using the instrument, recurrent laryngeal nerves can be quickly identified by using nerve monitoring equipment to avoid damage to the nerves, tissue gaps can be quickly subjected to separation operation, smoke discharge and hydrops suction under the condition that the instrument is not replaced in an operation, and the instrument is convenient to hold and operate and has very high practicability.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, in particular to a multifunctional nerve monitoring separation forceps. Background Art

[0002] In recent years, the application of intraoperative neuromonitoring (INOM) technology in thyroid surgery has become increasingly common, playing an important role in locating and protecting the recurrent laryngeal nerve. Based on the consideration of recurrent laryngeal nerve protection, a dedicated laparoscopic multifunctional nerve monitoring forceps has been designed for laparoscopic thyroid surgery. Its design is similar to that of a separation forceps, with the head of the forceps serving as a monitoring probe and the tail of the forceps connected to the nerve monitoring system via a wire. It has both monitoring and separation functions, allowing for real-time detection of nerves while separating tissue surrounding the nerve. However, the tail grip of the probe forceps is designed to open and close front to back, rather than the left and right opening and closing of traditional open surgical instruments. This structure requires a large space for movement when rotating the grip, which is easily restricted and difficult to grasp and operate.

[0003] At the same time, the surgical site often produces surgical smoke and fluid accumulation due to the destruction and vaporization of tissue protein and fat by high-frequency electrocautery knives, laser knives, ultrasonic scalpels, etc. When the separation forceps are working, the instrument needs to be frequently replaced to exhaust smoke and absorb fluid inside. The process is extremely inconvenient, which reduces the efficiency of the operation and needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a multifunctional nerve monitoring separation forceps.

[0005] The utility model adopts the following technical solutions:

[0006] A multifunctional nerve monitoring separation forceps comprises an upper jaw, a lower jaw, an extension rod, a handle, a drainage pipette, a monitoring probe and a driving mechanism, the upper jaw and the lower jaw can rotate with each other and are arranged at the front end of the extension rod; a rotating shaft for the handle to rotate is provided at the end of the extension rod; two handles are provided, which are symmetrically distributed on both sides of the extension rod, and a sleeve is provided at the front end of the handle, and the handle is sleeved on the rotating shaft through the sleeve; the drainage pipette is provided on the upper jaw and is connected to an external suction device through a catheter; the monitoring probe is provided on the lower jaw and is connected to an external nerve monitoring device through a wire; the driving mechanism is connected between the upper jaw and the lower jaw and the handle, and the upper jaw and the lower jaw are driven by the handle to open or close; a clearance hole is formed on the rotating shaft, the catheter and the wire extend from the front end of the extension rod to the end of the extension rod and pass through the clearance hole, and a clearance groove is formed on the sleeve for the catheter and the wire to pass through the clearance hole.

[0007] Preferably, the driving mechanism includes a sliding groove, a sliding block, a driving rod, a first connecting rod assembly and a second connecting rod assembly, the sliding groove is formed inside the extension rod and is located at the front end of the extension rod; the sliding block is adapted to the sliding groove and can be moved along the axis to be set in the sliding groove; the driving rod is set in the extension rod, and one end is connected to the sliding block to drive the sliding block to move; the first connecting rod assembly is connected between the sliding block and the upper jaw and the lower jaw to convert the linear movement of the sliding block into the opening and closing of the upper jaw and the lower jaw; the second connecting rod assembly is arranged between the driving rod and the handle, and converts the rotation of the handle into the linear movement of the driving rod, and a through hole for the driving rod to pass through is also formed on the rotating shaft.

[0008] Preferably, two guide holes are symmetrically formed on the side of the sliding groove, and the catheter and the wire can respectively pass through the extension rod from the inside to the outside through the guide holes and be connected to the drainage pipette and the monitoring probe respectively. The guide holes are located on the side of the sliding groove away from the moving range of the sliding block.

[0009] Preferably, the first connecting rod assembly includes a first connecting rod and a second connecting rod, the front end of the first connecting rod is rotatably connected to the upper jaw, and the front end of the second connecting rod is rotatably connected to the lower jaw; the ends of the first connecting rod and the second connecting rod are coaxially arranged and rotatably connected to the sliding block, and the angle between the first connecting rod and the second connecting rod increases as the sliding block moves forward to drive the upper jaw and the lower jaw to open.

[0010] Preferably, the second connecting rod assembly includes a third connecting rod and a fourth connecting rod, the front end of the third connecting rod is rotatably connected to one handle, and the front end of the fourth connecting rod is rotatably connected to the other handle; the ends of the third connecting rod and the fourth connecting rod are coaxially arranged and rotatably connected to the driving rod, and the angle between the third connecting rod and the fourth connecting rod increases as the two handles rotate in opposite directions to drive the driving rod to move forward and drive the sliding block to move.

[0011] Preferably, the handle is further formed with limit blocks that can abut against each other to limit the rotation angle of the handle.

[0012] Preferably, there are two paving holes, which are symmetrically located on both sides of the through hole for the wire and the catheter to pass through respectively. The paving groove is formed on the sleeve and is rotated and extended to both sides along the central axis, and the angle of the paving groove is greater than twice the maximum rotation angle of the handle.

[0013] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects: by respectively providing a drainage pipette and a monitoring probe on the upper and lower jaws, motor nerve monitoring and smoke extraction and liquid aspiration can be simultaneously achieved, eliminating the need for frequent instrument replacement, thereby improving surgical efficiency; the handles are symmetrically distributed on both sides of the extension rod, making it easier to hold, reducing the rotation space required for rotating the separating forceps, and facilitating operation; and because the handles are arranged in such a way that the rotating shaft will block the end of the extension rod, the provision of a clearance hole and a clearance groove allows the wire and catheter to pass through the rotating shaft and enter the extension rod;

[0014] The driving rod can also be extended into the extension rod through the through hole set in the rotating shaft, so that the handle can be rotated without affecting the driving of the upper and lower jaws;

[0015] The guide hole is located away from the sliding block's moving range to prevent the wires and conduits from being squeezed when the sliding block moves;

[0016] The stopper prevents the handles from rotating too far towards each other, which may cause damage to the instrument;

[0017] The angle of the clearance groove is greater than twice the maximum rotation angle of the handle, so that the clearance groove will not block the clearance hole and the through hole due to insufficient width when the handle rotates, thereby avoiding damage to the wires, conduits and drive rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0020] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0021] Figure 4 It is a cross-sectional view of the utility model;

[0022] Figure 5 This is a partial enlargement of the utility model Figure 1 ;

[0023] Figure 6 This is a partial enlargement of the utility model Figure 2 ;

[0024] In the figure: 1-upper jaw; 2-lower jaw; 3-extension rod; 31-rotating shaft; 32-through hole; 33-clearance hole; 34-guide hole; 4-handle; 41-sleeve; 42-limiting block; 43-clearance groove; 5-drainage straw; 51-catheter; 6-monitoring probe; 61-wire; 7-driving mechanism; 71-sliding groove; 72-sliding block; 73-driving rod; 74-first connecting rod assembly; 75-second connecting rod assembly. DETAILED DESCRIPTION

[0025] The present invention is further described below through specific implementation methods.

[0026] Reference Figures 1 to 6 As shown, a multifunctional nerve monitoring separation forceps includes an upper forceps mouth 1, a lower forceps mouth 2, an extension rod 3, a handle 4, a drainage pipette 5, a monitoring probe 6, and a driving mechanism 7.

[0027] The upper jaw 1 and the lower jaw 2 can rotate relative to each other and are arranged at the front end of the extension rod 3.

[0028] The extension rod 3 has a cavity formed inside for passing wires and tubes, and a shaft 31 at its end, which allows the handle 4 to rotate. A through-hole 32 is formed in the shaft 31 along the axial direction of the extension rod 3. Two symmetrical clearance holes 33 are formed on either side of the through-hole 32, with the axes of the clearance holes 33 parallel to the axial direction of the through-hole 32. Two guide holes 34 are also symmetrically provided on the side of the front end of the extension rod 3.

[0029] Two handles 4 are provided, symmetrically located on either side of the extension rod 3. A sleeve 41 is provided at the front end of each handle 4, which is mounted on the rotating shaft 31 via the sleeve 41. The symmetrical placement of the handles 4 on either side of the extension rod 3 makes it easier to grip, reducing the required rotational space when rotating the separating pliers, making operation more convenient. Specifically, the handles 4 are also formed with stoppers 42 that abut against each other to limit the rotation angle of the handles 4. The stoppers 42 prevent the handles 4 from excessively rotating in opposite directions, which could damage the instrument.

[0030] The drainage pipette 5 is arranged on the upper jaw 1, and one end of the conduit 51 is connected to the drainage pipette 5, and the other end extends from the front end of the extension rod 3 into the interior through the guide hole 34 and extends to the end of the extension rod 3, extends from a clearance hole 33 in the rotating shaft 31 and extends outward, and is connected to an external negative pressure device to perform smoking drainage operations.

[0031] The monitoring probe 6 is arranged on the lower jaw 2, and one end of the wire 61 is connected to the monitoring probe 6, and the other end extends from the front end of the extension rod 3 into the interior through the guide hole 34 and extends to the end of the extension rod 3, extending from another clearance hole 33 in the rotating shaft 31 and extending. It is connected to the external nerve monitoring equipment through the wire 61 to monitor the position of the motor nerve in real time, so as to control the separation forceps to avoid the nerve during movement. Specifically, the sleeve 41 is formed with a clearance groove 43 for the catheter 51 and the wire 61 to pass through the clearance hole 33. The clearance groove 43 is formed on the sleeve 41 and rotates and extends to both sides along the central axis. The angle of the clearance groove 43 is greater than twice the maximum rotation angle of the handle 4, so that the clearance groove 43 will not block the clearance hole 33 and the through hole 32 due to insufficient width when rotating with the handle 4, thereby avoiding damage to the wire 61 and the catheter 51.

[0032] The driving mechanism 7 is connected between the upper jaw 1 and the lower jaw 2 and the handle 4, and the upper jaw 1 and the lower jaw 2 are driven to open or close by the handle 4. The driving mechanism 7 includes a sliding groove 71, a sliding block 72, a driving rod 73, a first connecting rod assembly 74 and a second connecting rod assembly 75. The sliding groove 71 is formed inside the extension rod 3 and is located at the front end of the extension rod 3; the sliding block 72 is adapted to the sliding groove 71 and can be moved along the axis to be set in the sliding groove 71; the driving rod 73 is set in the extension rod 3, and one end is connected to the sliding block 72 to drive the sliding block 72 to move; the first connecting rod assembly 74 is connected between the sliding block 72 and the upper jaw 1 and the lower jaw 2 to convert the linear movement of the sliding block 72 into the opening and closing of the upper jaw 1 and the lower jaw 2; the second connecting rod assembly 75 is set between the driving rod 73 and the handle 4, and converts the rotation of the handle 4 into the linear movement of the driving rod 73. Specifically, the guide hole 34 is formed on the side of the sliding groove 71 and is located on the side of the sliding groove 71 away from the moving range of the sliding block 72 to prevent the sliding block 72 from squeezing the wire 61 and the catheter 51 when the sliding block 72 moves.

[0033] The first connecting rod assembly 74 includes a first connecting rod and a second connecting rod. The front end of the first connecting rod is rotatably connected to the upper jaw 1, and the front end of the second connecting rod is rotatably connected to the lower jaw 2. The ends of the first and second connecting rods are coaxially arranged and rotatably connected to the sliding block 72. The angle between the first and second connecting rods increases as the sliding block 72 moves forward to drive the upper and lower jaws 1 and 2 to open, and decreases as the sliding block 72 moves backward to drive the upper and lower jaws 1 and 2 to close.

[0034] The second connecting rod assembly 75 includes a third connecting rod and a fourth connecting rod. The front end of the third connecting rod is rotatably connected to one handle 4, and the front end of the fourth connecting rod is rotatably connected to the other handle 4. The ends of the third and fourth connecting rods are coaxially arranged and rotatably connected to the driving rod 73. The angle between the third and fourth connecting rods increases as the two handles 4 rotate in opposite directions, thereby driving the driving rod 73 forward and the sliding block 72 to move, and decreases as the two handles 4 rotate in opposite directions, thereby driving the driving rod 73 backward and the sliding block 72 to move.

[0035] During use, the monitoring probe 6 and the drainage pipette 5 are connected. Based on the feedback signal from the monitoring probe 6, the surgeon gradually moves inward while avoiding the nerves. The surgeon can also control the opening or closing of the upper and lower jaws 1 and 2 by driving the handles 4 in opposite directions or toward each other to separate the tissue. In this way, the surgeon can use the nerve monitoring equipment to quickly identify the recurrent laryngeal nerve to avoid nerve damage. The surgeon can also quickly separate the tissue space, remove smoke, and aspirate the accumulated fluid without changing instruments during the operation. The device is also easy to hold and operate, making it highly practical.

[0036] The above description is merely a preferred embodiment of the present invention and therefore cannot be used to limit the scope of implementation of the present invention. In other words, equivalent changes and modifications made according to the scope of the patent application and the contents of the specification of the present invention should still fall within the scope of the present patent.

Claims

1. A multifunctional nerve monitoring separation forceps, characterized by: It includes an upper jaw, a lower jaw, an extension rod, a handle, a drainage pipette, a monitoring probe and a driving mechanism. The upper jaw and the lower jaw can rotate with each other and are arranged at the front end of the extension rod; a rotating shaft for the handle to rotate is provided at the end of the extension rod; there are two handles, which are symmetrically distributed on both sides of the extension rod, and a sleeve is provided at the front end of the handle, and the handle is sleeved on the rotating shaft through the sleeve; the drainage pipette is provided on the upper jaw and is connected to an external suction device through a catheter; the monitoring probe is provided on the lower jaw and is connected to an external nerve monitoring device through a wire; the driving mechanism is connected between the upper jaw and the lower jaw and the handle, and the upper jaw and the lower jaw are driven by the handle to open or close; a clearance hole is formed on the rotating shaft, the catheter and the wire extend from the front end of the extension rod to the end of the extension rod and pass through the clearance hole, and a clearance groove is formed on the sleeve for the catheter and the wire to pass through the clearance hole.

2. The multifunctional nerve monitoring separation forceps according to claim 1, characterized in that: The driving mechanism includes a sliding groove, a sliding block, a driving rod, a first connecting rod assembly and a second connecting rod assembly. The sliding groove is formed inside the extension rod and is located at the front end of the extension rod. The sliding block is adapted to the sliding groove and can be moved along the axis to be set in the sliding groove. The driving rod is arranged in the extension rod, and one end is connected to the sliding block to drive the sliding block to move; the first connecting rod assembly is connected between the sliding block and the upper and lower jaws to convert the linear movement of the sliding block into the opening and closing of the upper and lower jaws; the second connecting rod assembly is arranged between the driving rod and the handle, and converts the rotation of the handle into the linear movement of the driving rod. A through hole is also formed on the rotating shaft for the driving rod to pass through.

3. The multifunctional nerve monitoring separation forceps according to claim 2, characterized in that: Two guide holes are symmetrically formed on the side of the sliding groove. The catheter and the wire can pass through the extension rod from the inside to the outside through the guide holes and are respectively connected to the drainage pipette and the monitoring probe. The guide holes are located on the side of the sliding groove away from the moving range of the sliding block.

4. The multifunctional nerve monitoring separation forceps according to claim 2, characterized in that: The first connecting rod assembly includes a first connecting rod and a second connecting rod, the front end of the first connecting rod is rotatably connected to the upper jaw, and the front end of the second connecting rod is rotatably connected to the lower jaw; the ends of the first connecting rod and the second connecting rod are coaxially arranged and rotatably connected to the sliding block, and the angle between the first connecting rod and the second connecting rod increases as the sliding block moves forward to drive the upper jaw and the lower jaw to open.

5. The multifunctional nerve monitoring separation forceps according to claim 2, characterized in that: The second connecting rod assembly includes a third connecting rod and a fourth connecting rod, the front end of the third connecting rod is rotatably connected to one handle, and the front end of the fourth connecting rod is rotatably connected to the other handle; the ends of the third connecting rod and the fourth connecting rod are coaxially arranged and rotatably connected to the driving rod, and the angle between the third connecting rod and the fourth connecting rod increases as the two handles rotate in opposite directions to drive the driving rod to move forward and drive the sliding block to move.

6. The multifunctional nerve monitoring separation forceps according to claim 1, characterized in that: The handle is also formed with limiting blocks that can abut against each other to limit the rotation angle of the handle.

7. The multifunctional nerve monitoring separation forceps according to claim 2, characterized in that: There are two relief holes, symmetrically located on both sides of the through hole for the wire and the catheter to pass through respectively. The relief groove is formed on the sleeve and extends and rotates along the central axis to both sides, and the angle of the relief groove is greater than twice the maximum rotation angle of the handle.

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