Ophthalmologic operating scissors with cutting edges capable of being replaced quickly

Abstract

The invention relates to the technical field of surgical instruments, and discloses ophthalmologic surgical scissors with cutting edges capable of being replaced quickly. The pair of ophthalmologic operation scissors capable of rapidly replacing the cutting edge comprises a first handle, a second handle, a pivot, a first cutting edge and a second cutting edge, the first cutting edge is matched with the second cutting edge, the first handle is hinged to the second handle through the pivot, the device has the advantages that the cutting edge of the pair of ophthalmologic operation scissors can be rapidly replaced, the step of polishing the cutting edge is omitted, and the operation is convenient. The problems that in the prior art, due to the fact that the cutting edges and the handles of the ophthalmic surgical scissors are mostly integrally formed, the cutting edges become blunt due to long-term use of the ophthalmic surgical scissors or burrs exist in cutting edge notches due to slamming and other improper use, then the cutting edges need to be polished, and the cutting edges are damaged are solved. The problems that the scissors need to be replaced if the situation is serious, grinding of the cutting edges is tedious and dangerous, and replacement of the ophthalmologic operation scissors is wasted are solved.

Description

Technical Field

[0001] The invention relates to the technical field of surgical instruments, in particular to an ophthalmic surgical scissors with quickly replaceable cutting edges. Background Art

[0002] Ophthalmic surgical scissors are precision medical instruments designed specifically for use in eye surgery. These scissors typically have very sharp and fine tips to allow doctors to make precise cuts and separate eye tissues while operating, minimizing damage to surrounding healthy tissue.

[0003] In the prior art, the blade and handle of ophthalmic surgical scissors are mostly formed in one piece. The blade of ophthalmic surgical scissors becomes blunt due to long-term use, or the blade has burrs due to being dropped or banged or other improper uses. Then the blade needs to be polished. In severe cases, the scissors may need to be replaced. Grinding the blade is cumbersome and dangerous, and replacing ophthalmic surgical scissors is wasteful. Therefore, an ophthalmic surgical scissors with a quick-replaceable blade is proposed to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides an ophthalmic surgical scissors with quickly replaceable blades, which has the advantages of being able to quickly replace the blades of the ophthalmic surgical scissors, eliminating the step of grinding the blades, and avoiding material waste as much as possible. The present invention solves the problem in the prior art that the blades and handles of the ophthalmic surgical scissors are mostly integrally formed, the blades of the ophthalmic surgical scissors become blunt due to long-term use, or the blades have burrs due to being dropped or other improper uses, and then the blades need to be ground. In severe cases, the scissors may need to be replaced, and grinding the blades is cumbersome and dangerous, and replacing the ophthalmic surgical scissors is wasteful.

[0006] (II) Technical solution

[0007] The technical solution of the present invention to solve the above technical problems is as follows: an ophthalmic surgical scissors with quickly replaceable cutting edges, comprising a first handle, a second handle, a pivot, a first blade and a second blade, the first blade and the second blade are adapted to each other, the first handle and the second handle are hinged by a pivot, the tops of the first handle and the second handle are each provided with a first socket extending into the interior thereof, the tops of the first handle and the second handle are each provided with a second socket located on both sides of the first socket, the interiors of the first handle and the second handle are each provided with a driving assembly extending to the opposite side thereof, the interiors of the first handle and the second handle are each provided with a limit assembly which is symmetrically distributed on the left and right and is transmission-connected to the driving assembly, the opposite sides of the limit assembly respectively extend into the adjacent second socket, the bottoms of the first blade and the second blade are each fixedly connected with an insertion block adapted to the first socket, the bottoms of the first blade and the second blade are each fixedly connected with a connecting rod located on both sides of the insertion block and adapted to the second socket, and the opposite side of the connecting rod is adapted to the limit assembly.

[0008] The beneficial effects of the present invention are:

[0009] The ophthalmic surgical scissors with quickly replaceable cutting edges, when the cutting edges of the ophthalmic surgical scissors become blunt due to long-term use or when the cutting edges have burrs due to being dropped or banged or other improper uses, the driving assembly is rotated by a cross screwdriver, and the driving assembly is transmission-connected with the limiting assembly, thereby driving the limiting assembly to move to the opposite side thereof, thereby releasing the limit on the connecting rod, and the first cutting edge or the second cutting edge can be pulled out from the top of the corresponding first handle or the second handle, and a new first cutting edge or the second cutting edge is prepared, and the insertion block and the connecting rod are respectively aligned with the first socket and the second socket, and then the insertion block and the connecting rod are inserted into the corresponding first socket and the second socket until the insertion block and the connecting rod are completely inserted into the corresponding first socket and the second socket, and the limiting assembly limits the connecting rod, and the insertion block is inserted into the first socket to increase the connection rigidity between the cutting edge and the handle, and the replacement of the cutting edge is completed. The ophthalmic surgical scissors have the advantages of being able to quickly replace the cutting edge of the ophthalmic surgical scissors, eliminating the step of grinding the cutting edge, and avoiding material waste as much as possible.

[0010] Based on the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the driving assembly includes a main shaft, a transmission disk, an arc-shaped hole and a cross-groove circular plate, the first handle and the second handle are both rotatably connected to the inside thereof with a main shaft extending to the opposite side thereof, the outer side of the main shaft is fixedly connected to a transmission disk symmetrically distributed in the front and rear, the surface of the transmission disk is provided with arc-shaped holes symmetrically distributed in the middle and adapted to each other, and the opposite side of the main shaft is fixedly connected to a cross-groove circular plate;

[0012] Further, the limit assembly includes a linkage rod, a transmission short shaft, a wedge-shaped limit block, a retaining ring and a spring leaf, the first handle and the second handle are both slidably connected to the inside thereof with linkage rods symmetrically distributed on the left and right sides, the opposite sides of the linkage rods are both extended to the opposite sides of the transmission disk, the front and rear sides of the opposite ends of the linkage rods are both fixedly connected to the transmission short shafts extending into the corresponding arc-shaped holes, the opposite sides of the linkage rods are both fixedly connected to the wedge-shaped limit blocks extending into the adjacent second socket holes, the outer sides of the linkage rods are both fixedly connected to the retaining rings, and the outer sides of the linkage rods are both sleeved with spring leaves located on the opposite sides of the retaining rings;

[0013] Furthermore, the connecting rod is provided with a limiting groove adapted to the wedge-shaped limiting block on the opposite side.

[0014] The beneficial effect of adopting the above further scheme is that the cross-slot circular plate is rotated by a cross screwdriver, and then the transmission disk is driven to rotate by the main shaft, and the arc-shaped hole rotates as the transmission disk rotates, so that the transmission short shaft moves along the arc-shaped hole, which can drive the linkage rod, the wedge-shaped limit block and the retaining ring to move to the opposite side thereof, the wedge-shaped limit block moves to the opposite side thereof and then separates from the limit groove, thereby releasing the limit on the connecting rod, and at the same time the retaining ring squeezes the spring leaf to cause it to undergo elastic deformation, so that the first blade or the second blade can be pulled out from the top of the corresponding first handle or the second handle, and the rotation of the cross-slot circular plate is released, and the spring leaf restores its elastic deformation, thereby resetting the cross-slot circular plate and the wedge-shaped limit block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a partial cross-sectional view of the first handle of the present invention;

[0017] Figure 3 This is a schematic diagram of the separation of the first blade and the second blade of the present invention;

[0018] Figure 4 It is a top view of the first handle structure of the present invention;

[0019] Figure 5 It is a top cross-sectional view of the first handle of the present invention;

[0020] Figure 6 This is an enlarged schematic diagram of the structure at a of the present invention;

[0021] Figure 7 It is an enlarged schematic diagram of the structure at point b of the present invention.

[0022] In the figure: 1. first handle; 2. second handle; 3. pivot; 4. first blade; 5. second blade; 6. first socket; 7. second socket; 8. drive assembly; 801. main shaft; 802. transmission plate; 803. arc-shaped hole; 804. cross-groove circular plate; 9. limit assembly; 901. linkage rod; 902. transmission short shaft; 903. wedge-shaped limit block; 904. retaining ring; 905. spring; 10. insertion block; 11. connecting rod; 12. limit groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the embodiment, Figure 1-7 Provided is an ophthalmic surgical scissors with a quickly replaceable blade, the invention comprises a first handle 1, a second handle 2, a pivot 3, a first blade 4 and a second blade 5, the first blade 4 and the second blade 5 are adapted to each other, the first handle 1 and the second handle 2 are hinged by the pivot 3, the top of the first handle 1 and the second handle 2 are both provided with a first socket 6 extending to the inside thereof, the top of the first handle 1 and the second handle 2 are both provided with a second socket 7 located on both sides of the first socket 6, the inside of the first handle 1 and the second handle 2 are both provided with a first socket 7 extending to the opposite side thereof The first handle 1 and the second handle 2 are provided with a limit assembly 9 which is symmetrically distributed on the left and right sides and is transmission-connected to the drive assembly 8. The opposite sides of the limit assembly 9 extend to the inside of the adjacent second socket hole 7. The bottoms of the first blade 4 and the second blade 5 are fixedly connected with an insertion block 10 which is adapted to the first socket hole 6. The bottoms of the first blade 4 and the second blade 5 are fixedly connected with a connecting rod 11 which is located on both sides of the insertion block 10 and is adapted to the second socket hole 7. The opposite side of the connecting rod 11 is adapted to the limit assembly 9.

[0025] The driving assembly 8 includes a main shaft 801, a transmission disc 802, an arc-shaped hole 803 and a cross-groove circular plate 804. The first handle 1 and the second handle 2 are both rotatably connected to the inside thereof with the main shaft 801 extending to the opposite side thereof. The outer side of the main shaft 801 is fixedly connected to the transmission disc 802 which is symmetrically distributed in the front and back. The surface of the transmission disc 802 is provided with arc-shaped holes 803 which are symmetrically distributed in the middle and adapted to each other. The opposite side of the main shaft 801 is fixedly connected to the cross-groove circular plate 804.

[0026] The limiting assembly 9 includes a linkage rod 901, a transmission short shaft 902, a wedge-shaped limiting block 903, a retaining ring 904 and a leaf spring 905. The first handle 1 and the second handle 2 are both slidably connected to the linkage rod 901 which is symmetrically distributed on the left and right sides. The opposite side of the linkage rod 901 extends to the opposite side of the transmission disk 802. The front and rear sides of the opposite end of the linkage rod 901 are fixedly connected to the transmission short shaft 902 extending into the corresponding arc-shaped hole 803. The opposite side of the linkage rod 901 is fixedly connected to the wedge-shaped limiting block 903 extending into the adjacent second socket hole 7. The outer side of the linkage rod 901 is fixedly connected to the retaining ring 904. The outer side of the linkage rod 901 is sleeved with a leaf spring 905 located on the opposite side of the retaining ring 904.

[0027] The opposite side of the connecting rod 11 is provided with a limiting groove 12 adapted to the wedge-shaped limiting block 903;

[0028] The cross-slot circular plate 804 is rotated by a cross screwdriver, and then the transmission disk 802 is driven to rotate through the main shaft 801, and the arc hole 803 rotates as the transmission disk 802 rotates, so that the transmission short shaft 902 moves along the arc hole 803, which can drive the linkage rod 901, the wedge-shaped limit block 903 and the retaining ring 904 to move to the opposite side thereof. The wedge-shaped limit block 903 moves to the opposite side thereof and then separates from the limit groove 12, releasing the limit on the connecting rod 11. At the same time, the retaining ring 904 squeezes the spring leaf 905 to cause it to undergo elastic deformation, so that the first blade 4 or the second blade 5 can be pulled out from the top of the corresponding first handle 1 or the second handle 2, and the rotation of the cross-slot circular plate 804 is released, and the spring leaf 905 restores its elastic deformation, so that the cross-slot circular plate 804 and the wedge-shaped limit block 903 are both reset.

[0029] Working principle:

[0030] Step 1: When the ophthalmic surgical scissors become blunt due to long-term use or have burrs on the blade due to falling or other improper use, the cross-groove circular plate 804 is rotated by a cross screwdriver, and then the transmission disc 802 is driven to rotate by the main shaft 801, and the arc hole 803 rotates with the rotation of the transmission disc 802, so that the transmission short shaft 902 moves along the arc hole 803, which can drive the linkage rod 901, the wedge-shaped limit block 903 and the retaining ring 904 to move to the opposite side;

[0031] Step 2: The wedge-shaped limiting block 903 moves to the opposite side and then separates from the limiting groove 12, releasing the limiting of the connecting rod 11. At the same time, the retaining ring 904 squeezes the spring leaf 905 to cause it to undergo elastic deformation, so that the first blade 4 or the second blade 5 can be pulled out from the top of the corresponding first handle 1 or the second handle 2, and the rotation of the cross-groove circular plate 804 is released, and the spring leaf 905 recovers its elastic deformation, thereby resetting the cross-groove circular plate 804 and the wedge-shaped limiting block 903.

[0032] Step 3: prepare a new first blade 4 or second blade 5, align the insertion block 10 and the connecting rod 11 with the first socket 6 and the second socket 7 respectively, and then insert the insertion block 10 and the connecting rod 11 into the corresponding first socket 6 and the second socket 7 until the insertion block 10 and the connecting rod 11 are completely inserted into the corresponding first socket 6 and the second socket 7. In the above process, the connecting rod 11 first contacts the wedge-shaped limit block 903, and then the wedge-shaped limit block 903 moves to the opposite side, and at the same time, the spring leaf 905 is elastically deformed until the wedge-shaped limit block 903 is aligned with the limit groove 12. The spring leaf 905 now restores its elastic deformation, so that the wedge-shaped limit block 903 is inserted into the corresponding limit groove 12, and the connecting rod 11 can be limited. The insertion of the insertion block 10 into the first socket 6 can increase the connection rigidity between the cutting edge and the handle, and the replacement of the first blade 4 or the second blade 5 can be completed.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ophthalmic surgical scissors with a quickly replaceable blade, comprising a first handle (1), a second handle (2), a pivot (3), a first blade (4) and a second blade (5), wherein the first blade (4) and the second blade (5) are adapted to each other, and characterized in that: The first handle (1) and the second handle (2) are hingedly connected via a pivot (3); the top of the first handle (1) and the second handle (2) are both provided with a first socket (6) extending into the inside thereof; the top of the first handle (1) and the second handle (2) are both provided with a second socket (7) located on both sides of the first socket (6); the inside of the first handle (1) and the second handle (2) are both provided with a driving assembly (8) extending to the opposite side thereof; the inside of the first handle (1) and the second handle (2) are both provided with a left-right symmetrically distributed and A limit assembly (9) is transmission-connected to the driving assembly (8), and the opposite sides of the limit assembly (9) extend to the inside of the adjacent second socket hole (7). The bottoms of the first blade (4) and the second blade (5) are fixedly connected with an insertion block (10) adapted to the first socket hole (6). The bottoms of the first blade (4) and the second blade (5) are fixedly connected with a connecting rod (11) located on both sides of the insertion block (10) and adapted to the second socket hole (7), and the opposite side of the connecting rod (11) is adapted to the limit assembly (9).

2. The ophthalmic surgical scissors with quickly replaceable cutting edges according to claim 1, characterized in that: The driving assembly (8) comprises a main shaft (801), a transmission disc (802), an arc-shaped hole (803) and a cross-grooved circular plate (804); the first handle (1) and the second handle (2) are both rotatably connected to the inside thereof with a main shaft (801) extending to the opposite side thereof; the outer side of the main shaft (801) is both fixedly connected to a transmission disc (802) symmetrically distributed in the front and rear; the surface of the transmission disc (802) is provided with arc-shaped holes (803) symmetrically distributed in the middle and adapted to each other; the opposite side of the main shaft (801) is both fixedly connected to a cross-grooved circular plate (804).

3. The ophthalmic surgical scissors with quickly replaceable cutting edges according to claim 2, characterized in that: The limit assembly (9) comprises a linkage rod (901), a transmission short shaft (902), a wedge-shaped limit block (903), a retaining ring (904) and a leaf spring (905); the first handle (1) and the second handle (2) are both slidably connected to the inside thereof with a linkage rod (901) which is symmetrically distributed on the left and right; the opposite side of the linkage rod (901) extends to the opposite side of the transmission disk (802); the front and rear sides of the opposite end of the linkage rod (901) are both fixedly connected to the transmission short shaft (902) extending into the corresponding arc-shaped hole (803); the opposite side of the linkage rod (901) is fixedly connected to the wedge-shaped limit block (903) extending into the adjacent second socket hole (7); the outer side of the linkage rod (901) is fixedly connected to the retaining ring (904); and the outer side of the linkage rod (901) is sleeved with a leaf spring (905) located on the opposite side of the retaining ring (904).

4. The ophthalmic surgical scissors with quickly replaceable cutting edges according to claim 3, characterized in that: The opposite side of the connecting rod (11) is provided with a limiting groove (12) adapted to the wedge-shaped limiting block (903).

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