CN111904545B

CN111904545B - A gun forceps for spinal endoscopic surgery

Info

Publication number: CN111904545B
Application number: CN202010790454.9A
Authority: CN
Inventors: 邹红军; 朱琳; 刘锦波
Original assignee: First Peoples Hospital of Changzhou
Current assignee: First Peoples Hospital of Changzhou
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-08-31
Anticipated expiration: 2040-08-07
Also published as: CN111904545A

Abstract

The invention discloses a gun forceps for spinal endoscopic surgery. The technical solution includes: a forceps body, wherein the forceps body includes a forceps body, a forceps claw, a forceps rod, a first forceps mouth and a second forceps mouth; a power assembly for pulling the second jaw to rotate; a guide tube, the guide tube includes an inner tube and an outer tube, the inner tube is slidably connected in the outer tube; and an adsorption assembly installed at the bottom end of the outer tube The gun forceps for spinal endoscopic surgery is flexible, reliable and convenient to manufacture; and the gun forceps provides a guide tube for guiding the forceps body when using, because the guide tube is composed of a retractable inner tube and appearance, it can be Extending and retracting can prevent the forceps body from entering the bacteria-producing area when the guide barrel is surgically inserted, preventing infection. Furthermore, since the bottom end of the guide barrel is provided with an adsorption component, it is convenient to fix the guide barrel.

Description

Rifle forceps for spinal endoscopic surgery

Technical Field

The invention relates to the technical field of medical instruments, in particular to a gun clamp for a spinal endoscope operation.

Background

Degenerative diseases of the spine are the most common types of spinal disorders, including herniated discs, spinal stenosis and spondylolisthesis, which all may cause dura mater or nerve compression, thus requiring a laminectomy and decompression procedure. Intervertebral foramen decompression pincers are mainly used in spinal surgeries, and spinal nerves are exposed by removing vertebral plates.

The prior chinese patent publication No. CN108784784A discloses a gun-type intervertebral foramen pressure reducing forceps, which comprises a forceps body main body, a main functional member and a fixed handle extending downwards along the tail of the main functional member, wherein the main functional member and the fixed handle are integrally formed; the auxiliary functional part is driven by the movable handle and can freely slide relative to the main functional part by virtue of the sliding part; the end part of the auxiliary functional part is provided with a biting and cutting part, a through hole is arranged on the auxiliary functional part to form a biting and cutting edge and a broken bone containing cavity, and correspondingly, the end part of the main functional part is provided with a biting and cutting platform matched with the biting and cutting part. Therefore, the movable handle of the gun type intervertebral foramen pressure reducing clamp transmits force to the biting and cutting edge by virtue of the lever principle, and the holding and applying force is greatly reduced.

The gun-type intervertebral foramen pressure reducing forceps can increase biting force; however, the gun-type intervertebral foraminal decompression forceps of the type described above still have some drawbacks: firstly, a sleeve matched with the conventional sleeve is not provided, and when the conventional sleeve is used, the gun pliers need to be lifted when passing through the sleeve, so that the gun pliers are easily exposed to a bacteria-containing area and easily cause infection; secondly, the sleeve is difficult to fix on the skin of a patient when in use; thirdly, the interior of the gun clamp adopts a lever structure, and the manufacture is difficult.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a gun clamp for a spinal endoscope operation, which solves the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

a kind of spinal endoscopic surgery uses the gun forceps, including:

the clamp comprises a clamp body, a clamp claw, a clamp rod, a first clamp mouth and a second clamp mouth, wherein the clamp claw is rotationally connected to the clamp body;

the power assembly is used for drawing the second clamp mouth to rotate;

the guide cylinder comprises an inner pipe and an outer pipe, and the inner pipe is connected in the outer pipe in a sliding mode;

and the adsorption component is arranged at the bottom end of the outer pipe.

By adopting the technical scheme, when the spine endoscope operation gun clamp is used, the clamp body in the gun clamp realizes the cutting-off function by virtue of the first clamp nozzle and the second clamp nozzle and drives the second clamp nozzle to rotate by virtue of the power assembly, so that the use is flexible and reliable, and the manufacture is convenient; and this rifle pincers provides the guide of guide when being used for the pincers body, because the guide comprises telescopic inner tube and outward appearance, so it can stretch out and draw back, can avoid the pincers body to get into there is the fungus region when the guide is inserted in the operation, prevents to infect, moreover, because be provided with the adsorption component in the bottom of guide, so made things convenient for the fixed of guide.

Further, power component is including dodging the groove, drawing copper wire, first straining ring, second straining ring and torsional spring, dodge the groove and set up the pincers body with in the tong pole, the one end of drawing the copper wire is connected to be fixed the axis of rotation outside the claw, the other end of drawing the copper wire is fixed second pincers mouth is distolateral, first straining ring with second straining ring rotates respectively to be connected dodge the inslot, it winds to draw the steel wire first straining ring with the outside of second straining ring, the torsional spring cover is established the axis of rotation outside the second pincers mouth, the one end of torsional spring is fixed on the second pincers mouth, the other end of torsional spring is fixed on the tong pole.

Through adopting above-mentioned technical scheme, when the operator rotated the claw, it can drive and pull the copper wire flexible, and dodge first tensioning ring and the second tensioning ring of inslot and can keep pulling the copper wire and be in the tensioning state, and the torsional spring can keep first pincers mouth and second pincers mouth to be in the interlock state, can drive the second pincers mouth and open or closed when the operator pressed the claw, facilitates the use, and the structure is exquisite.

Further, the adsorption component comprises a thread ring groove, an outward extending ring, a conical ring part, a fixing ring and a silica gel ring, the thread ring groove is formed in the bottom end of the outer pipe, the outward extending ring is in threaded connection in the thread ring groove, the conical ring part is located at the bottom end of the outward extending ring and integrally formed with the outward extending ring, the fixing ring is in threaded connection with the outside of the conical ring part, and the silica gel ring is fixed to the outside of the fixing ring.

Through adopting above-mentioned technical scheme, utilize solid fixed ring's silica gel circle in the adsorption component can realize good adsorption efficiency, and the existence of awl ring portion can pass the headspace for the pincers body, can conveniently realize the dismantlement to overhanging ring and awl ring portion through with overhanging ring screw in screw thread annular groove.

Furthermore, the bottom of inner tube have with inner tube integrated into one piece's ring portion, the outer tube inner wall has seted up and has supplied the vertical gliding circular slot of ring portion, set up the sliding tray in the ring portion, there is the card post through spring coupling in the sliding tray, in the outer tube circular slot cell wall has seted up and has supplied card post male draw-in groove.

Through adopting above-mentioned technical scheme, when the top side in being pulled into to the circular slot in the ring portion of inner tube bottom, the spring in the sliding tray can drive the card post and insert to the draw-in groove to can be firm fixed with the inner tube.

Further, the top end of the inner tube is cut to form a flat notch, and the inner bottom end of the inner tube is provided with an arc-shaped surface in smooth transition.

Through adopting above-mentioned technical scheme, the setting of flat notch can make things convenient for the pincers body to penetrate in the inner tube.

Furthermore, the first plier mouth and the second plier mouth are respectively provided with a sharp cutting edge, the included angle of the sharp cutting edges is 45-60 degrees, and the first plier mouth and the second plier mouth are made of W18Cr4V high-speed steel.

Through adopting above-mentioned technical scheme, the cutting of the sharp blade of this contained angle is sharp, can guarantee through using high-speed tungsten chromium vanadium steel that the sharp blade has long enough life to can reduce the frequency of whetting a knife.

Furthermore, an L-shaped clamping portion is fixed on the first clamp mouth and clamped at the end of the clamp rod, a threaded column is fixed on the L-shaped clamping portion and is in threaded connection with the inside of the clamp rod.

Through adopting above-mentioned technical scheme, utilize L shape card portion and screw thread post can conveniently realize that first pincers post is fixed with the dismantlement of pincers pole.

Furthermore, a supporting sleeve is fixed in the avoiding groove, and the traction steel wire penetrates through the supporting sleeve.

Through adopting above-mentioned technical scheme, support the cover and can keep drawing the copper wire and be in stable condition, keep the stability of its position.

Furthermore, the top side line of the flat notch on the inner pipe and the bottom side line of the flat notch are respectively provided with a smooth fillet.

Through adopting above-mentioned technical scheme, the setting of both sides fillet about the flat notch can increase the smoothness when the device uses, prevents the scratch.

Furthermore, a hook-shaped hanging lug is fixed on the forceps body.

By adopting the technical scheme, the hook-shaped hanging lug can facilitate the hanging of the clamp body.

Further, the surface of the caliper body is coated with a layer of antifouling coating, so that the preparation method of the antifouling coating is provided, and the specific preparation method comprises the following steps:

the following components are taken by weight: 70-80 parts of polymethyl methacrylate, 30-50 parts of polytetrafluoroethylene, 40-50 parts of polyethylene terephthalate, 30-50 parts of propionaldehyde, 20-30 parts of tetraalkoxysilane, 10-20 parts of propane sultone, 10-20 parts of ethylene glycol, 10-20 parts of azobisisobutyronitrile, 20-30 parts of fluorinated polyether siloxane and 10-20 parts of refined naphthalene;

s1, preparing an antifouling coating pre-preparation liquid: adding polymethyl methacrylate, polytetrafluoroethylene, polyethylene terephthalate, propionaldehyde, tetraalkoxysilane and propane sultone into an internal mixer at 210-220 ℃ for internal mixing for 30 min;

s2, preparing an antifouling coating solution: adding ethylene glycol, azodiisobutyronitrile, fluorinated polyether siloxane and refined naphthalene into the antifouling coating pre-preparation liquid, uniformly stirring, carrying out heat preservation treatment for 10min, and cooling to 50-60 ℃ to obtain an antifouling coating solution;

s3, coating: spraying the antifouling coating solution obtained in the step S2 on the surface of the caliper body by using a high-pressure spray gun;

s4, drying: and (4) drying the pincer body obtained in the step (S3) in an oven at the temperature of 70-80 ℃.

In summary, the invention mainly has the following beneficial effects:

when the spine endoscope operation gun clamp is used, the clamp body in the gun clamp realizes the cutting-off function by depending on the first clamp nozzle and the second clamp nozzle and drives the second clamp nozzle to rotate by depending on the power assembly, so that the use is flexible and reliable, and the manufacture is convenient; and this rifle pincers provides the guide of guide when being used for the pincers body, because the guide comprises telescopic inner tube and outward appearance, so it can stretch out and draw back, can avoid the pincers body to get into there is the fungus region when the guide is inserted in the operation, prevents to infect, moreover, because be provided with the adsorption component in the bottom of guide, so made things convenient for the fixed of guide.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a sectional view of a pliers body for showing the structure of one embodiment of the pliers body;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an enlarged view of the portion B in FIG. 2;

FIG. 5 is a schematic structural view of a pincer body according to an embodiment of the present invention;

FIG. 6 is an enlarged view of the portion C of FIG. 5;

FIG. 7 is a cross-sectional view of a guide barrel according to an embodiment of the present invention;

FIG. 8 is an enlarged view of the portion D in FIG. 7;

fig. 9 is a schematic structural view for showing a guide barrel according to an embodiment of the present invention.

In the figure: 1. a clamp body; 11. a clamp body; 12. a jaw; 13. a clamp lever; 14. a first plier mouth; 15. a second plier mouth; 2. a power assembly; 3. a guide cylinder; 31. an inner tube; 32. an outer tube; 4. an adsorption component; 21. an avoidance groove; 22. drawing a steel wire; 23. a first tensioning ring; 24. a second tension ring; 25. a torsion spring; 41. a thread ring groove; 42. an overhanging ring; 44. a conical ring part; 45. a fixing ring; 46. a silica gel ring; 311. a circular ring part; 321. a circular groove; 3111. a sliding groove; 3112. a spring; 3113. clamping the column; 3211. a card slot; 312. a flat notch; 313. an arc-shaped surface; 151. a sharp cutting edge; 141. an L-shaped clip portion; 1411. a threaded post; 211. a support sleeve; 111. and (5) hanging a lug.

Detailed Description

The present invention is described in further detail below with reference to figures 1-9.

Example 1

Referring to fig. 1 and 2, a gun clamp for spinal endoscopic surgery mainly comprises the following parts:

the clamp comprises a clamp body 1, wherein the clamp body 1 comprises a clamp body 11, a clamp claw 12, a clamp rod 13, a first clamp mouth 14 and a second clamp mouth 15, the clamp claw 12 is rotatably connected to the clamp body 11, the clamp rod 13 is fixed on the clamp body 11, the first clamp mouth 14 is fixedly installed at the end part of the clamp rod 13, and the second clamp mouth 15 is rotatably connected to the end part of the clamp rod 13;

the power assembly 2 is used for drawing the second clamp mouth 15 to rotate;

the guide cylinder 3, the guide cylinder 3 includes inner tube 31 and outer tube 32, the inner tube 31 is connected in the outer tube 32 slidably;

and a suction assembly 4 installed at the bottom end of the outer tube 32.

Referring to fig. 1 and 2, when the spine endoscopic surgery gun clamp is used, the clamp body 1 of the gun clamp realizes the cutting-off function by the first clamp mouth 14 and the second clamp mouth 15, and drives the second clamp mouth 15 to rotate by the power assembly 2, so that the use is flexible and reliable, and the manufacture is convenient; and this rifle pincers provides the guide of guide cylinder 3 when being used for pincers body 1 to use, because guide cylinder 3 comprises telescopic inner tube 31 and outward appearance, so it can stretch out and draw back, can avoid pincers body 1 to get into the zone of having the fungus when operation inserts guide cylinder 3, prevents to infect, moreover, because be provided with absorption assembly 4 in the bottom of guide cylinder 3, so made things convenient for the fixed of guide cylinder 3.

Referring to fig. 2, 3 and 4, the power assembly 2 includes an avoiding groove 21, a traction steel wire 22, a first tension ring 23, a second tension ring 24 and a torsion spring 25, the avoiding groove 21 is formed in the caliper body 11 and the caliper bar 13, one end of the traction steel wire 22 is fixedly connected to the outside of the rotation shaft of the caliper claw 12, the other end of the traction steel wire 22 is fixedly connected to the end side of the second caliper mouth 15, the first tension ring 23 and the second tension ring 24 are respectively rotatably connected to the avoiding groove 21, the traction steel wire 22 is wound around the outside of the first tension ring 23 and the second tension ring 24, the torsion spring 25 is fixedly connected to the outside of the rotation shaft of the second caliper mouth 15, one end of the torsion spring 25 is fixedly connected to the second caliper mouth 15, and the other end of the torsion spring 25 is fixedly connected to the caliper bar 13, when the caliper claw 12 is rotated by an operator, the traction steel wire 22 can be driven to stretch, and the first tension ring 23 and the second tension ring 24 in the avoiding groove 21 can maintain the traction steel wire 22 in a tensioned state, the torsion spring 25 can keep the first jaw 14 and the second jaw 15 in an engaged state, and when an operator presses the jaw 12, the second jaw 15 can be driven to open or close, so that the pliers are convenient to use and exquisite in structure.

Referring to fig. 7, 8 and 9, wherein the adsorption component 4 includes a thread ring groove 41, an outward extending ring 42, a conical ring portion 44, a fixing ring 45 and a silicon rubber ring 46, the thread ring groove 41 is opened at the bottom end of the outer tube 32, the outward extending ring 42 is screwed in the thread ring groove 41, the conical ring portion 44 is located at the bottom end of the outward extending ring 42 and is integrally formed with the outward extending ring 42, the fixing ring 45 is screwed outside the conical ring portion 44, the silicon rubber ring 46 is fixed outside the fixing ring 45, good adsorption capacity can be realized by using the silicon rubber ring 46 on the fixing ring 45 in the adsorption component 4, the conical ring portion 44 can pass through a reserved space for the caliper body 11, and the outward extending ring 42 and the conical ring portion 44 can be conveniently disassembled by screwing the outward extending ring 42 into the thread ring groove 41.

Referring to fig. 7 and 8, a circular ring portion 311 integrally formed with the inner tube 31 is disposed at the bottom end of the inner tube 31, a circular groove 321 for the circular ring portion 311 to vertically slide is disposed on an inner wall of the outer tube 32, a sliding groove 3111 is disposed in the circular ring portion 311, a latch 3113 is connected to the sliding groove 3111 through a spring 3112, a slot 3211 for the latch 3113 to be inserted is disposed on a wall of the circular groove 321 in the outer tube 32, and when the circular ring portion 311 at the bottom end of the inner tube 31 is pulled into a top side of the circular groove 321, the spring 3112 in the sliding groove 3111 can drive the latch 3113 to be inserted into the slot 3211, so that the inner tube 31 can be firmly fixed.

Referring to fig. 7 and 9, the top end of the inner tube 31 is cut to form a flat notch 312, the inner bottom end of the inner tube 31 has an arc surface 313 with smooth transition, and the flat notch 312 is provided to facilitate the penetration of the caliper body 11 into the inner tube 31.

Referring to fig. 5 and 6, the first plier mouth 14 and the second plier mouth 15 are respectively provided with a sharp cutting edge 151, the included angle of the sharp cutting edge 151 is 55 degrees, the first plier mouth 14 and the second plier mouth 15 are made of W18Cr4V high-speed steel, the sharp cutting edge 151 at the included angle is sharp in cutting, the use of the high-speed stellite can ensure that the sharp cutting edge 151 has a sufficiently long service life, and the sharpening frequency can be reduced.

Referring to fig. 5 and 6, an L-shaped clamping portion 141 is fixed on the first pincer mouth 14, the L-shaped clamping portion 141 is clamped at an end of the pincer rod 13, a threaded column 1411 is fixed on the L-shaped clamping portion 141, the threaded column 1411 is screwed into the pincer rod 13, and the first pincer column and the pincer rod 13 can be conveniently detached and fixed by using the L-shaped clamping portion 141 and the threaded column 1411.

Referring to fig. 2 and 4, a support sleeve 211 is fixed in the escape groove 21, and the traction wire 22 is inserted into the support sleeve 211, and the support sleeve 211 can keep the traction wire 22 in a stable state and maintain the position stability thereof.

Referring to fig. 7 and 9, the top side line of the flat notch 312 and the bottom side line of the flat notch 312 on the inner tube 31 respectively have smooth round corners, and the round corners on the upper and lower sides of the flat notch 312 can increase the smoothness of the device during use and prevent scratches; wherein, a hook-shaped hanging lug 111 is fixed on the forceps body 11, and the hook-shaped hanging lug 111 can facilitate the hanging of the forceps body 11.

The use principle and the advantages are as follows:

this backbone is rifle for endoscopic surgery is when using, the operator can hold the body of a pincers 11 and the claw 12 on the pincers body 1 and operate, utilize first pincers mouth 14 and second pincers mouth 15 to realize the function of cutting off, can utilize guide tube 3 to guide earlier when the operation is used, be about to guide tube 3 with adsorption component 4 fix on the patient or other devices on one's body, when sending pincers body 1 from the one end of guide tube 3, the operator can stretch out and draw back guide tube 3 to the shortest, thereby avoid pincers body 1 to break away from sterile region and cause patient's infection, later the operator presses claw 12 and drives first claw 12 and the separation of second claw 12, not hard up claw 12 drives first claw 12 and the cutting of second claw 12, high durability and convenient use, labor saving, and reliable structure.

Example 2

The difference from the embodiment 1 is that the surface of the caliper body 11 is coated with an antifouling coating, since the caliper body 11 is held by a doctor, the caliper body is easy to emit oil and sweat, and in order to prevent the surface of the caliper body 11 from becoming greasy and dirty, the surface of the caliper body 11 is coated with the antifouling coating, so that the preparation method of the antifouling coating is provided, which has the advantages of short preparation process and simple preparation, wherein the preparation method of the antifouling coating on the surface of the caliper body 11 comprises the following steps:

the following components are taken by weight: 70 parts of polymethyl methacrylate, 30 parts of polytetrafluoroethylene, 40 parts of polyethylene terephthalate, 30 parts of propionaldehyde, 20 parts of tetraalkoxysilane, 10 parts of propane sultone, 10 parts of ethylene glycol, 10 parts of azodiisobutyronitrile, 20 parts of fluorinated polyether siloxane and 10 parts of refined naphthalene;

s1, preparing an antifouling coating pre-preparation liquid: adding polymethyl methacrylate, polytetrafluoroethylene, polyethylene terephthalate, propionaldehyde, tetraalkoxysilane, and propane sultone into an internal mixer at 210 deg.C, and banburying for 30 min;

s2, preparing an antifouling coating solution: adding ethylene glycol, azodiisobutyronitrile, fluorinated polyether siloxane and refined naphthalene into the antifouling coating pre-preparation liquid, uniformly stirring, carrying out heat preservation treatment for 10min, and cooling to 50 ℃ to obtain an antifouling coating solution;

s3, coating: spraying the antifouling coating solution obtained in the step S2 on the surface of the caliper body 11 by using a high-pressure spray gun;

s4, drying: the caliper body 11 obtained in S3 was dried in an oven at 70 ℃.

Example 3

The difference from the example 2 lies in the preparation of the antifouling coating on the surface of the caliper body 11, wherein the preparation method of the antifouling coating is as follows:

the following components are taken by weight: 74 parts of polymethyl methacrylate, 34 parts of polytetrafluoroethylene, 40 parts of polyethylene terephthalate, 30 parts of propionaldehyde, 20 parts of tetraalkoxysilane, 10 parts of propane sultone, 10 parts of ethylene glycol, 15 parts of azodiisobutyronitrile, 20 parts of fluorinated polyether siloxane and 15 parts of refined naphthalene;

s1, preparing an antifouling coating pre-preparation liquid: adding polymethyl methacrylate, polytetrafluoroethylene, polyethylene terephthalate, propionaldehyde, tetraalkoxysilane, and propane sultone into a 214 ℃ internal mixer for internal mixing for 30 min;

s4, drying: the caliper body 11 obtained in S3 was dried in an oven at 70 ℃.

Example 4

the following components are taken by weight: 74 parts of polymethyl methacrylate, 34 parts of polytetrafluoroethylene, 45 parts of polyethylene terephthalate, 33 parts of propionaldehyde, 24 parts of tetraalkoxysilane, 10 parts of propane sultone, 13 parts of ethylene glycol, 15 parts of azodiisobutyronitrile, 20 parts of fluorinated polyether siloxane and 15 parts of refined naphthalene;

s1, preparing an antifouling coating pre-preparation liquid: adding polymethyl methacrylate, polytetrafluoroethylene, polyethylene terephthalate, propionaldehyde, tetraalkoxysilane, and propane sultone into an internal mixer at 218 ℃ for internal mixing for 30 min;

s4, drying: the caliper body 11 obtained in S3 was dried in an oven at 73 ℃.

Example 5

the following components are taken by weight: 78 parts of polymethyl methacrylate, 38 parts of polytetrafluoroethylene, 45 parts of polyethylene terephthalate, 33 parts of propionaldehyde, 24 parts of tetraalkoxysilane, 18 parts of propane sultone, 13 parts of ethylene glycol, 15 parts of azodiisobutyronitrile, 20 parts of fluorinated polyether siloxane and 15 parts of refined naphthalene;

s1, preparing an antifouling coating pre-preparation liquid: adding polymethyl methacrylate, polytetrafluoroethylene, polyethylene terephthalate, propionaldehyde, tetraalkoxysilane, and propane sultone into a 215 ℃ internal mixer for internal mixing for 30 min;

s4, drying: the caliper body 11 obtained in S3 was dried in an oven at 78 ℃.

Example 6

the following components are taken by weight: 80 parts of polymethyl methacrylate, 50 parts of polytetrafluoroethylene, 50 parts of polyethylene terephthalate, 50 parts of propionaldehyde, 30 parts of tetraalkoxysilane, 18 parts of propane sultone, 13 parts of ethylene glycol, 15 parts of azodiisobutyronitrile, 20 parts of fluorinated polyether siloxane and 15 parts of refined naphthalene;

s4, drying: the caliper body 11 obtained in S3 was dried in an oven at 78 ℃.

Example 7

the following components are taken by weight: 80 parts of polymethyl methacrylate, 50 parts of polytetrafluoroethylene, 50 parts of polyethylene terephthalate, 50 parts of propionaldehyde, 30 parts of tetraalkoxysilane, 20 parts of propane sultone, 20 parts of ethylene glycol, 30 parts of azodiisobutyronitrile, 20 parts of fluorinated polyether siloxane and 20 parts of refined naphthalene;

s1, preparing an antifouling coating pre-preparation liquid: adding polymethyl methacrylate, polytetrafluoroethylene, polyethylene terephthalate, propionaldehyde, tetraalkoxysilane, and propane sultone into a 220 ℃ internal mixer for internal mixing for 30 min;

s4, drying: the caliper body 11 obtained in S3 was dried in an oven at 80 ℃.

For the surface hardness and peel strength tests of the caliper body 11 coated with the antifouling coating in examples 2 to 7, the data of all examples were normalized based on the data of example 2 for the sake of comparison.

TABLE 1

	Surface hardness	Peel strength
			Example 3	100%	100%
Example 3	98%	95%
			Example 4	84%	101%
Example 5	106%	105%
			Example 6	97%	99%
Example 7	97%	84%

As can be seen from the above, since the test results of the surface hardness and the peel strength of the caliper body 11 in example 5 are higher than those of the other examples coated with the antifouling coating, the preparation method of the antifouling coating given in example 5 is the most preferable choice.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a rifle pincers are used in backbone endoscope operation which characterized in that: the method comprises the following steps:

the clamp comprises a clamp body (1), wherein the clamp body (1) comprises a clamp body (11), a clamp claw (12), a clamp rod (13), a first clamp mouth (14) and a second clamp mouth (15), the clamp claw (12) is rotationally connected to the clamp body (11), the clamp rod (13) is fixed to the clamp body (11), the first clamp mouth (14) is fixedly installed at the end of the clamp rod (13), and the second clamp mouth (15) is rotationally connected to the end of the clamp rod (13);

the power assembly (2) is used for drawing the second clamp mouth (15) to rotate;

the guide cylinder (3), the guide cylinder (3) comprises an inner pipe (31) and an outer pipe (32), and the inner pipe (31) is connected in the outer pipe (32) in a sliding manner;

and an adsorption assembly (4) mounted at the bottom end of the outer tube (32);

the bottom end of the inner pipe (31) is provided with a circular ring part (311) which is integrally formed with the inner pipe (31), the inner wall of the outer pipe (32) is provided with a circular groove (321) for the circular ring part (311) to vertically slide, a sliding groove (3111) is formed in the circular ring part (311), a clamping column (3113) is connected in the sliding groove (3111) through a spring (3112), and the groove wall of the circular groove (321) in the outer pipe (32) is provided with a clamping groove (3211) for the clamping column (3113) to insert;

the surface of the caliper body (11) is coated with an antifouling coating, wherein the antifouling coating comprises the following raw materials in parts by weight: 78 parts of polymethyl methacrylate, 38 parts of polytetrafluoroethylene, 45 parts of polyethylene terephthalate, 33 parts of propionaldehyde, 24 parts of tetraalkoxysilane, 18 parts of propane sultone, 13 parts of ethylene glycol, 15 parts of azodiisobutyronitrile, 20 parts of fluorinated polyether siloxane and 15 parts of refined naphthalene;

the power assembly (2) comprises an avoidance groove (21), a traction steel wire (22), a first tensioning ring (23), a second tensioning ring (24) and a torsion spring (25), the avoidance groove (21) is formed in the caliper body (11) and the caliper bar (13), one end of the traction steel wire (22) is connected and fixed to the outside of a rotating shaft of the caliper claw (12), the other end of the traction steel wire (22) is fixed to the end side of the second caliper mouth (15), the first tensioning ring (23) and the second tensioning ring (24) are respectively connected in the avoidance groove (21) in a rotating mode, the traction steel wire (22) is coiled on the first tensioning ring (23) and the outside of the second tensioning ring (24), the torsion spring (25) is sleeved on the outside of the rotating shaft of the second caliper mouth (15), one end of the torsion spring (25) is fixed to the second caliper mouth (15), the other end of the torsion spring (25) is fixed on the clamp rod (13);

adsorption component (4) include screw thread annular groove (41), overhanging ring (42), awl ring portion (44), solid fixed ring (45) and silica gel circle (46), screw thread annular groove (41) are seted up outer tube (32) bottom, overhanging ring (42) threaded connection be in screw thread annular groove (41), awl ring portion (44) are located the bottom of overhanging ring (42) and with overhanging ring (42) integrated into one piece, gu fixed ring (45) threaded connection be in the outside of awl ring portion (44), silica gel circle (46) are fixed gu fixed ring (45) outside.

2. The gun clamp for spinal endoscopic surgery according to claim 1, characterized in that: the top end of the inner pipe (31) is cut to form a flat notch (312), and the inner bottom end of the inner pipe (31) is provided with an arc-shaped surface (313) with smooth transition.

3. The gun clamp for spinal endoscopic surgery according to claim 1, characterized in that: the first plier mouth (14) and the second plier mouth (15) are respectively provided with a sharp cutting edge (151), the included angle of the sharp cutting edge (151) is 45-60 degrees, and the first plier mouth (14) and the second plier mouth (15) are made of W18Cr4V high-speed steel.

4. The gun clamp for spinal endoscopic surgery according to claim 1, characterized in that: an L-shaped clamping portion (141) is fixed on the first clamp mouth (14), the L-shaped clamping portion (141) is clamped at the end portion of the clamp rod (13), a threaded column (1411) is fixed on the L-shaped clamping portion (141), and the threaded column (1411) is in threaded connection with the interior of the clamp rod (13).

5. The gun clamp for spinal endoscopic surgery according to claim 1, characterized in that: a supporting sleeve (211) is fixed in the avoiding groove (21), and the traction steel wire (22) penetrates through the supporting sleeve (211).

6. The gun clamp for spinal endoscopic surgery according to claim 2, characterized in that: the top side line of the flat notch (312) on the inner pipe (31) and the bottom side line of the flat notch (312) are respectively provided with a smooth round angle.

7. The gun clamp for spinal endoscopic surgery according to claim 1, characterized in that: a hook-shaped hanging lug (111) is fixed on the pliers body (11).