Disclosure of Invention
According to the technical problems, the invention provides a nerve endoscope under-skull base dura mater suture device, which comprises dura mater forceps, a movable arm, a rotating shaft, a limit groove, a push rod, a pin, a needle bolt channel, a slide groove, a slide block, a needle passing groove, an L-shaped protection plate, a limit plate and a wire groove, wherein the fixed arm is of an integrated structure formed by two straight arms at an obtuse angle, the fixed arm and the movable arm are arranged in a crossed manner, the fixed arm and the movable arm are rotationally connected through the rotating shaft, the push rod is arranged on the upper side of the fixed arm in parallel, the top of the movable arm is provided with the limit groove, a pin is arranged at a position corresponding to the limit groove at the bottom of the push rod, the pin is clamped in the limit groove, the top of the fixed arm is provided with the slide groove, the bottom of the push rod is matched with the slide groove, the needle bolt channel is arranged at the middle line position of the push rod, the needle bolt channel penetrates through the head end and the tail end of the push rod, the head end of the fixed arm is vertically upwards provided with the bump, one side of the bump is provided with the needle passing groove, the end face outwards is arranged on the end face of the bump, the end face of the fixing arm is arranged on the end face outwards, the end face of the fixing arm is provided with the end face of the needle passing groove, the end is provided with the flange, the end face is arranged on the L-shaped protection plate is arranged on the opposite to the head end, and the two opposite to the end face of the needle passing groove is arranged on the needle groove, and is provided with the opposite to the end face, and the needle groove is arranged on the opposite to the end face.
Furthermore, the sliding groove and the sliding block are respectively of a convex structure.
Further, the cross section of the pintle channel is of a circular structure.
Further, the pintle is a cylindrical pintle.
Further, the cross section of the pintle passage is in a triangular structure.
Further, the pintle is a triangular pintle.
Further, the needle passing groove is a rectangular groove or a V-shaped groove.
Further, the temporary wire fixing device further comprises a reed and an adjusting bolt, the reed is of an arc-shaped structure, and the reed is fixed on the outward end face of the protruding block through the adjusting bolt.
Further, the movable arm and the fixed arm are separated from each other in a natural state.
Further, the device also comprises a torsion spring, wherein the torsion spring is arranged at the rotating shaft, and the movable arm and the fixed arm of the torsion spring are in a separated state in a natural state.
The beneficial effects of the invention are as follows: the invention relates to a nerve endoscope skull base dura suture device, which enters an operation area, a dura mater is clamped in a gap between the front ends of a fixed arm and a movable arm, the fixed arm and the movable arm are kneaded, a needle bolt is inserted from the tail part of a needle bolt channel to a needle point to touch an L-shaped protecting plate, at the moment, a barb of the needle bolt just passes through a needle passing groove, a suture thread is tightened from the tail part of a dura mater clamp, the suture thread is pulled out to abut against the needle bolt, the needle bolt is slowly pulled, the suture thread slides into a needle bolt groove, the suture thread is pulled out of the dura mater clamp, the movable arm and the fixed arm are loosened, the dura mater clamp is taken out from a nasal cavity, one end of the suture thread is fixed, the other end of the suture is completely pulled out, the other end of the dura mater is sewn, the nasal cavity is externally sewn by a knot pushing device, and the suture is completed.
Drawings
FIG. 1 is a main block diagram of the present invention;
FIG. 2 is an enlarged schematic view of point A;
FIG. 3 is a right side view of point A;
FIG. 4 is a schematic view in the B direction of a pintle channel having a circular cross-section;
FIG. 5 is a schematic view in the B direction of a triangular cross section of the pintle channel;
FIG. 6 is a schematic view of the head end of the fixing arm when the needle slot is a rectangular slot;
FIG. 7 is a side view of the structure in which the needle passing slot is a rectangular slot;
FIG. 8 is a schematic view of the structure of the needle passing groove as a V-shaped groove;
fig. 9 is a schematic structural diagram of a crossed spring sheet between a movable arm and a fixed arm:
FIG. 10 is a schematic view of the structure of a torsion spring between the movable arm and the fixed arm;
FIG. 11 is a schematic view of a cylindrical pintle;
FIG. 12 is an enlarged schematic view at point C;
FIG. 13 is a schematic view of a triangular pintle structure;
Fig. 14 is a schematic structural view of the knot pusher.
As shown in the figure, the epidural forceps-1, the fixed arm-101, the movable arm-102, the rotating shaft-103, the limit groove-104, the push rod-105, the pin-106, the pintle channel-107, the sliding groove-108, the sliding block-109, the needle passing groove-110, the reed-111, the adjusting bolt-112, the L-shaped protection plate-113, the limit plate-114, the wire groove-115, the pintle-2, the cylindrical pintle-201, the triangular pintle-202, the barb-203, the knot pusher-3, the Y-shaped structure-301, the crossed spring piece-4, the torsion spring-5 and the bump-6.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
Example 1:
The invention relates to a nerve endoscope skull base dura suture device, which comprises a dural forceps 1, a pintle 2 and a knot pusher 3, wherein the dural forceps 1 further comprises a fixed arm 101, a movable arm 102, a rotating shaft 103, a limiting groove 104, a push rod 105, a pin 106, a pintle channel 107, a chute 108, a sliding block 109, a needle passing groove 110, an L-shaped protecting plate 113, a limiting plate 114 and a wire groove 115, the fixed arm 101 is formed into an integral structure by two straight arms with an obtuse angle, the fixed arm 101 and the movable arm 102 are arranged in a crossing way, the fixed arm 101 is rotationally connected with the movable arm 102 through the rotating shaft 103, the upper side of the fixed arm 101 is provided with a push rod 105 in parallel, the top of the movable arm 102 is provided with a limiting groove 104, the bottom of the push rod 105 is provided with a pin 406 corresponding to the limiting groove 104, the pin 106 is clamped in the limiting groove 104, the limiting groove 104 reserves a space for the displacement of the pin when the fixed arm 101 and the movable arm 102 are kneaded, the top of the fixed arm 101 is provided with a chute 108, the bottom of the push rod 105 is provided with a sliding block 109 in cooperation with the chute 108, the centerline position of the push rod 105 is provided with a pintle channel 107, the pintle channel 107 penetrates through the head end and the tail end of the push rod 105, the head end of the fixed arm 101 is vertically upwards provided with a convex block 6, one side of the convex block 6 is provided with a needle passing groove 110, the outward end face of the convex block 6 is provided with a temporary wire fixing device, the outward end face of the convex block 6 is also provided with an L-shaped protective plate 113, the L-shaped protective plate 113 is arranged at the edge of the needle passing groove 110 on the fixed arm 101, the outward end face of the convex block 6 and two sides of the joint position of the convex block 6 and the fixed arm 101 are respectively provided with a limiting plate 114, the middle positions of the two opposite limiting plates 114 form a wire groove 115, the pintle 2 is in a structure with a thin head end and a thick tail end, the position of the pintle 2 close to the head end is provided with a barb 203, the head end of the knot pusher 3 is provided with a Y-shaped structure 301.
Further, the sliding groove 108 and the sliding block 109 are respectively in a convex structure, and the sliding block 109 is clamped in the sliding groove 109 to realize sliding connection between the push rod 105 and the fixed arm 101.
Further, the temporary fixing line device further comprises a reed 111 and an adjusting bolt 112, the reed 111 is of an arc-shaped structure, and the reed 111 is fixed on the outward end face of the protruding block 6 through the adjusting bolt 112.
Example 2:
The structure and principle of this embodiment are basically the same as those of embodiment 1, and the same points are not repeated, and only the differences are described, as shown in fig. 3 and 10, in which: the cross section of the pintle channel 107 is in a circular structure, the pintle 2 is a cylindrical pintle 201 matched with the pintle channel 107, and the diameter of the circular pintle channel 107 is the same as the maximum diameter of the cylindrical pintle 201, so that the pintle 2 can smoothly pass through the pintle channel 107.
Example 3:
The structure and principle of this embodiment are basically the same as those of embodiment 1, and the same points are not repeated, and only the differences are described, as shown in fig. 4 and 11, in which: the cross section of the pintle channel 107 is in a triangular structure, the pintle 2 is a triangular pintle 202 matched with the pintle channel, the apex angle of the triangular pintle channel 107 is upward, the direction of the barbs 203 on the pintle 2 can be confirmed, and the deviation of the directions of the barbs 203 caused by rotation in the advancing process of the pintle 2 is avoided.
Example 4:
the structure and principle of this embodiment are basically the same as those of embodiment 1, and the same points are not repeated, and only the differences are described, as shown in fig. 6, in which: the needle passing groove 110 is a rectangular groove, and can adapt to the pintle 2 with different shapes, so that the pintle 2 is prevented from being clamped.
Example 5:
The structure and principle of this embodiment are basically the same as those of embodiment 1, and the same points are not repeated, and only the differences are described, as shown in fig. 7, in which: the needle passing groove 110 is a V-shaped groove, which is suitable for the cylindrical pintle 201, has a certain limiting function on the cylindrical pintle 201, and the V-shaped structure is convenient for the entry and exit of the pintle 2.
Example 6:
The structure and principle of this embodiment are basically the same as those of embodiment 1, and the same points are not repeated, only the differences are described, as shown in fig. 8, and the differences are as follows: the novel movable arm and fixed arm combined type elastic device is characterized by further comprising a cross elastic piece 4, wherein the cross elastic piece 4 is arranged between the movable arm 102 and the fixed arm 101, the movable arm 102 and the fixed arm 101 are in a separated state in a natural state of the cross elastic piece 4, the cross elastic piece 4 is compressed after kneading, only the movable arm 102 and the fixed arm 101 are required to be loosened when the cross elastic piece 4 needs to be separated, and the movable arm 102 and the fixed arm 101 directly return to an initial position under the elastic force of the cross elastic piece 4, so that time and labor are saved.
Example 7:
the structure and principle of this embodiment are basically the same as those of embodiment 1, and the same points are not repeated, and only the differences are described, as shown in fig. 9, in which: still include torsional spring 5, torsional spring 5 sets up in pivot 103 department, torsional spring 5 is in the separation state with fixed arm 101 at the free arm 102 under the natural state, and torsional spring 5 holds the power after kneading, when need separate, only need loosen free arm 102 with fixed arm 101 can, free arm 102 and fixed arm 101 directly get back to initial position under torsional force effect of torsional spring 5, labour saving and time saving.
Example 8:
When the clamp is used, a suture is firstly placed at a temporary fixing wire device, the adjusting bolt 112 is rotated to adjust the tightness degree of the reed 111, so that the clamp is in a proper range, the suture can be fixed, the suture can be pulled out under the action of external force, two ends of the suture respectively cross two sides of the L-shaped protection plate 113, two ends of the suture are led to the tail end of the epidural clamp 1 through the wire grooves 115, and the wire grooves 115 are used for preventing the phenomenon that the suture is difficult to pull out due to position deviation or winding with the epidural clamp 1;
b. The epidural forceps 1 enters an operation area, an epidural site to be sutured is placed at the needle passing groove 110, and the movable arm 102 and the fixed arm 101 are kneaded, so that the distance between the right end face of the push rod 105 and the left end face of the protruding block 6 is reduced until the epidural forceps 1 clamps the epidural;
c. The pintle 2 is inserted from the tail of the pintle channel 107 until the tip of the needle touches the L-shaped protective plate 113, and then the barb 203 of the pintle 2 just passes through the needle passing groove 110 completely;
d. kneading the fixed arm 101 and the movable arm 102, and tightening the suture thread from the tail of the epidural forceps 1, so that the suture thread is pulled out from the temporary thread fixing device and abuts against the pintle 2;
e. slowly pulling the pintle 2, sliding the suture into the barb 203, lifting the suture out of the epidural forceps 1, loosening the movable arm 102 and the fixed arm 101, taking out the epidural forceps 1 from the nasal cavity, fixing one end of the suture, and completely pulling out the other end;
f. Repeating the steps to suture the other end of the hard membrane;
g. the suture thread is knotted outside the nasal cavity, the Y-shaped structure 301 at the front end of the knot pusher 3 is clamped on the knot, and the knot is slowly pushed forward until the knot is sent to a designated position, and the suture is completed.
According to the invention, through the matched use of the epidural forceps 1, the special pintle 2 and the knot pusher 3, the operation can be performed in a narrow space with a complex structure in the deep and surrounding of the nasal cavity, the technical difficulty of suturing is greatly reduced, time and labor are saved, the success rate of suturing is greatly improved, the incidence rate of secondary injury in the suturing process is effectively reduced, and the suturing effect is ensured.
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the invention, which modifications would also be considered to be within the scope of the invention.