CN115944459A - Ophthalmic forceps for microscopic fundus surgery - Google Patents
Ophthalmic forceps for microscopic fundus surgery Download PDFInfo
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- CN115944459A CN115944459A CN202211725192.3A CN202211725192A CN115944459A CN 115944459 A CN115944459 A CN 115944459A CN 202211725192 A CN202211725192 A CN 202211725192A CN 115944459 A CN115944459 A CN 115944459A
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- forceps handle
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- 238000001356 surgical procedure Methods 0.000 title claims description 12
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 210000000078 claw Anatomy 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 230000005489 elastic deformation Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 claims description 3
- 210000003128 head Anatomy 0.000 claims 5
- 210000004220 fundus oculi Anatomy 0.000 claims 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000004402 high myopia Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 208000001351 Epiretinal Membrane Diseases 0.000 description 2
- 208000031471 Macular fibrosis Diseases 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 208000030533 eye disease Diseases 0.000 description 2
- 210000005224 forefinger Anatomy 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 210000003813 thumb Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003811 finger Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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Abstract
The invention relates to an ophthalmic forceps for microscopic eyeground operation, belonging to the technical field of ophthalmic surgical instruments. The forceps comprise a forceps core, a sliding assembly, a forceps handle and a resetting piece, wherein the sliding assembly is installed in an installation channel at the front end of the forceps handle and can axially reciprocate relative to the forceps handle, the sliding assembly comprises a sleeve at the front end of the sliding assembly and a driving head at the tail end of the sliding assembly, the front end of the forceps core is provided with automatically separable forceps claws, the rear end of the forceps core penetrates through the sleeve and then is fixedly connected with the forceps handle, the sleeve can enable the forceps claws to be closed along with the forward movement of the sliding assembly, the resetting piece is arranged in the forceps handle and used for pushing the sliding assembly to reset backwards, a connecting column is fixedly arranged in the installation channel of the forceps handle, an elastic pressing ring is sleeved on the connecting column, when the elastic pressing ring contracts inwards, the front end face of the elastic pressing ring can act on the driving head to enable the sliding assembly to move forwards, a pressing operation portion is arranged on the side face of the elastic pressing ring, and the forceps handle is provided with a holding through groove corresponding to the pressing operation portion. The invention can make the operation more convenient.
Description
Technical Field
The invention relates to an ophthalmic forceps for microscopic eyeground operation, belonging to the technical field of ophthalmic surgical instruments.
Background
With the improvement of living standard and the rapid development of electronic products, the types and the number of eye diseases of people are also greatly increased. In the process of diagnosing and treating eye diseases, intervention operation is sometimes needed to be completed, and in the operation process, intraocular tissues such as an Inner Limiting Membrane (ILM), an epiretinal membrane (ERM) and the like are often needed to be clamped by the aid of the ophthalmic forceps.
In the related art, the first one is the intraocular forceps proposed in patent document CN2162939Y, the tubular handle is provided with a handle, the rear ends of a pair of forceps claws are provided with thin rod-shaped inner cores, and the inner cores pass through the sleeve and are tightly matched and fixedly connected with the inner wall of the handle through a fastening block and a fastening screw, so that the inner cores are fixed without displacement. The sleeve is tightly matched with the sliding block and is connected with the handle through the sliding block, the front end of the sliding block is provided with a spring, and the rear end of the sliding block is provided with an adjusting limit screw for adjusting and limiting the moving distance of the sleeve 9, so that the forceps tightness of the forceps opening is adjusted.
However, the matching structure between the handle and the tubular handle is not good, when in use, the handle needs to be pinched by the forefinger and the thumb to control the closing or opening of the front end of the forceps head so as to realize the clamping and releasing functions, and the defects of inflexible operation, hysteresis in clamping, poor hand feeling in use and the like exist, and the operation risk is increased to a certain extent.
Later, some improvements have been made, for example, an ophthalmologic surgical instrument proposed in patent document No. CN210138243U and an ophthalmologic forceps proposed in patent document No. CN214909124U, although the ophthalmologic forceps have been improved from different angles, the handles of the ophthalmologic forceps are all schemes that an operation handle is independently arranged on the side wall of the holding handle, and the operation methods are different and different, and the front end of the forceps head needs to be controlled to be closed or opened by pinching the handle with the forefinger and the thumb, so the defects of inconvenient operation and the like described above still exist.
Disclosure of Invention
Aiming at the technical problems of the existing intraocular forceps that the handle operation is not flexible enough, the clamping has hysteresis, the use hand feeling is not good and the like, the invention aims to provide the ophthalmic forceps for the microscopic fundus operation, the ophthalmic forceps can effectively enhance the hand holding force feedback, reduce the clamping delay of the forceps clamps, and have more convenient operation.
In order to solve the technical problems, the invention adopts the technical scheme that: the slide assembly is arranged in an installation channel at the front end of the forceps handle and can axially reciprocate relative to the forceps handle, the slide assembly comprises a sleeve positioned at the front end of the slide assembly, the front end of the forceps core is provided with forceps claws which can be automatically separated, the rear end of the forceps core penetrates through the sleeve and then is fixedly connected with the forceps handle, the sleeve can close the forceps claws along with the forward movement of the slide assembly, and the reset piece is arranged in the forceps handle and used for pushing the slide assembly to reset backwards; the installation passageway internal fixation of tweezers handle is provided with the spliced pole, the axis of spliced pole and the coaxial or parallel of sheathed tube axis, the cover is equipped with the elasticity clamping ring on the spliced pole, the one end that the spliced pole is close to the tweezers handle afterbody is provided with and is used for the spacing terminal surface of the spacing clamping ring of elasticity clamping ring axial, the slip subassembly is including the drive head that is located its tail end, the elasticity clamping ring relies on its elastic deformation ability can follow the radial shrink and the flare-out of tweezers handle, when the elasticity clamping ring is inwards shrunk, the preceding terminal surface of elasticity clamping ring can act on the drive head so that the slip subassembly antedisplacement, the side of elasticity clamping ring is provided with presses the operation portion, the tweezers handle has and runs through the groove with the grab handle that the operation portion corresponds, it has evagination operation position to press the operation portion to run through the outer terminal surface in groove for the grab handle.
In order to make the structure simple and reliable, the preferred scheme is: the pressing operation parts are symmetrically distributed relative to the axis of the connecting column.
In order to make the structure simple and reliable, the preferred scheme is: the elastic press ring is a hollow cylinder, the section of the elastic press ring in the radial direction of the forceps handle is oval, and the section of the elastic press ring in the axial direction of the forceps handle comprises a first arc line and a second arc line which are symmetrically distributed relative to the axis of the connecting column.
In order to ensure that the stress of the transmission structure is more reliable, the further preferable scheme is as follows: the oval long axis corresponding to the section of the elastic press ring in the radial direction of the forceps handle is superposed with the center surface of the handle through groove, so that the rotation of the elastic press ring on the connecting column at the tail end can be better limited.
In order to facilitate processing and manufacturing and ensure that the stress of the transmission structure is more reliable, the preferred scheme is as follows: the sliding component comprises a sliding rod which is in sliding fit with the front section of the forceps handle, and the front end of the sliding rod is provided with a central through hole for the sleeve to pass through; the outer surface of the rear end of the sleeve is fixed with the central through hole of the sliding rod in a cementing manner; the inner cavity of the front section of the mounting channel of the forceps handle is provided with a step limiting end face, the resetting piece is a spring sleeved on the sliding rod, the rear end of the spring is connected with the front end face of the driving head, and the front end of the spring is connected with the step limiting end face; the side wall of the middle part of the forceps handle is in threaded connection with at least two screws which are arranged along the radial direction of the forceps handle at intervals along the circumferential direction of the forceps handle; the forceps handle is provided with a screw connecting hole matched with the screw, the front end of the connecting column is provided with a central through hole for the rear end of the forceps core to pass through, the central through hole of the connecting column at least penetrates through the area where the screw connecting hole is located, and the rear end of the forceps core is locked and fixed after the tail end of the screw passes through the screw connecting hole.
In order to make the transmission structure more reliably stressed, the preferable scheme is as follows: the outer wall of the front end of the sliding rod is provided with a protruding annular limiting end, and the annular limiting end and the sliding rod are of an integral structure; the driving head is fixedly connected with the rear end of the sliding rod through threads.
For convenience of processing and assembly, the preferable scheme is as follows: the tweezers handle includes by going to back tweezers handle head, grab handle and the tweezers handle afterbody that sets gradually, and the inner chamber of tweezers handle head is located to the spacing terminal surface of ladder, and on the grab handle runs through the groove and locates the grab handle, the preceding terminal surface of tweezers handle afterbody was located to the spliced pole, and tweezers handle head is fixed through bonding with the grab handle, and the axle center hole of grab handle passes through threaded connection with tweezers handle afterbody and fixes.
For the convenience of processing and manufacturing, the preferable scheme is as follows: the sliding rod, the driving head, the forceps handle head, the grab handle and the forceps handle tail are all made of 3D printing materials, such as PA nylon materials. Adopt 3D to print the material and can realize that tweezers 3D in the eye prints integrated into one piece, compare in traditional processing mode, can effectively process and material cost.
In order to make the hand feeling of holding better, the preferable proposal is that: the outer surface of the grab handle and the outer surface of the tail of the forceps handle are provided with frosted treatment layers; the outer surface of the tail of the forceps handle is provided with a strip-shaped groove which is transversely bent.
For the convenience of processing and manufacturing, the preferable scheme is as follows: the forceps core comprises two forceps sheets and a connecting shaft of a hollow structure, the forceps sheets are arranged in parallel, a forceps claw is arranged at the front end of each forceps sheet, and the tail end of each forceps sheet penetrates through the connecting shaft and is flattened to fix the forceps sheet.
In order to meet the operation requirements of the high myopia patients, the preferable scheme is as follows: the length of the working end of the tweezer core is set to be 32-38 mm. The front end working area in the prior art is short in size and length (about 28-31 mm) and cannot meet the operation requirement of a patient with high myopia, and a forceps core with the size of 32mm-38mm is loaded to meet the operation requirement of the patient with high myopia.
The technical scheme provided by the invention has the following beneficial effects:
(1) The elastic pressing ring coaxially arranged with the forceps handle is adopted to drive the sliding assembly to move, the elastic pressing ring is operated in a holding mode, the grasping and releasing of the forceps can be achieved by directly pressing the driving position of the elastic pressing ring, the structure is simple and reliable, the force application degree can be accurately controlled when the forceps are used, the feedback is timely, and the stability is high.
(2) The elastic compression ring is operated in a holding mode, the elastic compression ring is provided with the driving parts which are symmetrical in two sides, the perception of a user on the size of a loaded load is improved compared with the traditional structure, clamping can be completed only through small control force of the user, the discomfort of the fingers caused by long-time use of the user is reduced, the risk of an operation is reduced to a certain extent, time delay is reduced, and clamping hysteresis is effectively improved.
(3) Overall structure is simple, and slide bar, drive head, tweezers handle head, grab handle and tweezers handle afterbody etc. major component all adopt 3D to print the material preparation and form, and its accessible 3D prints technology integrated into one piece, compares in traditional processing mode, can effectively process and material cost.
Drawings
Fig. 1 is a three-dimensional schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic cross-sectional structure of the present invention.
Fig. 3 is a schematic view of the structure of the tweezer core of the present invention.
Fig. 4 is a schematic view of the structure of the sliding unit according to the present invention.
Figure 5 is a schematic view of the structure of the forceps handle of the invention.
Fig. 6 is a schematic structural view of the elastic press ring in the front view direction according to the present invention.
Fig. 7 is a schematic side view of the elastic pressure ring according to the present invention.
Fig. 8 is a schematic length view of the working end of the present invention.
Parts in the figures are labeled: the forceps core 10, the sliding component 20, the forceps handle 30, the elastic press ring 40 and the reset piece 50; the forceps sheet 101, the connecting shaft 102 and the forceps jaws 103; the device comprises a sleeve 201, a sliding rod 202, an annular limiting end 203 and a driving head 204; a forceps handle head 301, a handle 302 and a forceps handle tail 303; a pressing operation unit 401; a connecting column 601, a screw 602, a pressure ring limiting end face 603, a step limiting end face 604, a grab handle through groove 605 and a strip-shaped groove 606.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
As shown in fig. 1 to 7, the forceps comprises a forceps core 10, a sliding assembly 20, a forceps handle 30 and a resetting piece 50, wherein the sliding assembly 20 is installed in an installation channel at the front end of the forceps handle 30 and can axially reciprocate relative to the forceps handle 30, the sliding assembly 20 comprises a sleeve 201 at the front end of the sliding assembly, the front end of the forceps core 10 is provided with forceps claws 103 capable of automatically separating, the rear end of the forceps core 10 passes through the sleeve 201 and then is fixedly connected with the forceps handle 30, the sleeve 201 can close the forceps claws 103 along with the forward movement of the sliding assembly 20, and the resetting piece 50 is arranged in the forceps handle 30 and is used for pushing the sliding assembly 20 to reset backwards; the connecting column 601 is fixedly arranged in the mounting channel of the forceps handle 30, and the axis of the connecting column 601 is coaxial with or parallel to the axis of the sleeve 201. It will be appreciated that the slight eccentricity of the connecting post 601 does not interfere with the normal use of the ophthalmic forceps, and is preferably a coaxial arrangement. The cover is equipped with elastic press ring 40 on the spliced pole 601, the one end that spliced pole 601 is close to tweezers handle 30 afterbody is provided with the spacing terminal surface 603 of clamping ring that is used for elastic press ring 40 axial spacing, slip subassembly 20 is including being located the drive head 204 of its tail end, elastic press ring 40 relies on its elastic deformation ability can follow the radial shrinkage and the flare of tweezers handle 30, when elastic press ring 40 is inwards shrunk, the preceding terminal surface of elastic press ring 40 can act on drive head 204 so that slip subassembly 20 antedisplacement, the side of elastic press ring 40 is provided with presses operation portion 401, tweezers handle 30 has and presses the corresponding grab handle of operation portion 401 to run through groove 605, press operation portion 401 and have evagination operation position for the outer terminal surface that the grab handle runs through groove 605.
Wherein, the material and the appearance of elastic press ring 40 only need satisfy "elastic press ring 40 relies on its elastic deformation ability can follow the radial shrink and the flare-out of tweezers handle 30", and then drive elastic press ring 40 synchronous production axial expansion "the technical requirement can, when elastic press ring 40 radially contracts, elastic press ring 40 synchronous production axial expansion, because the tail end has the spacing terminal surface 603 of press ring, elastic press ring 40 can only promote the axial displacement of drive head 204 forward because of the tail end, and then impel sliding assembly 20 whole axial displacement forward, impel tweezers claw 103 closed, realize snatching the function from this, reset 50 is compressed the energy storage simultaneously. When an operator loosens the elastic press ring 40, the elastic press ring 40 automatically resets, and meanwhile, the resetting piece 50 releases energy to drive the sliding assembly 20 to reset backwards, the sleeve 201 does not press the forceps core 10 any more along with the backward movement of the sliding assembly 20, and the forceps jaws 103 recover the opened initial state, thereby realizing the releasing function. The elastic pressing ring 40 is operated in a holding mode, the tweezers can be grabbed and released by pressing the driving part of the elastic pressing ring 40, the structure is simple and reliable, the force application degree can be accurately controlled when the tweezers are used, the feedback is timely, and the stability is high.
The elastic press ring 40 is preferably made of polyurethane material. The elastic compression ring 40 generally adopts a hollow cylinder body, and for the simple and reliable structure, the preferable appearance scheme is as follows: the elastic press ring 40 is a cylinder body with a hollow structure, the section of the elastic press ring 40 in the radial direction of the forceps handle 30 is oval, and the section of the elastic press ring 40 in the axial direction of the forceps handle 30 comprises a first arc line and a second arc line which are symmetrically distributed relative to the axis of the connecting column 601. The arc-shaped design is adopted, so that the processing and forming are convenient, and the elastic deformation capacity is better. In order to further improve the elastic deformation capability, the side wall of the front end of the elastic press ring 40 can be additionally provided with a deformation groove. In addition, in an alternative, the elastic pressing ring 40 may be formed by combining a plurality of elastic sheets distributed in a ring shape.
It is understood that the pressing operation portion 401 may be one or more, preferably more, and more preferably: the pressing operation parts 401 are symmetrically distributed with respect to the axis of the connection column 601. On one hand, the transmission mechanism can be stressed more reliably, in addition, the holding operation effect can be improved, and the hand feeling is better.
In order to ensure that the stress of the transmission structure is more reliable, the further preferable scheme is as follows: the oval long axis corresponding to the section of the elastic press ring 40 in the radial direction of the forceps handle 30 is superposed with the central plane of the handle through groove 605, so that the rotation of the elastic press ring 40 on the connecting column 601 at the tail end can be better limited.
In order to facilitate processing and manufacturing and ensure that the stress of the transmission structure is more reliable, the preferred scheme is as follows: the sliding assembly 20 comprises a sliding rod 202 in sliding fit with the front section of the forceps handle 30, and the front end of the sliding rod 202 is provided with a central through hole for the sleeve 201 to pass through; the outer surface of the rear end of the sleeve 201 is fixed with the central through hole of the sliding rod 202 in a cementing manner; the inner cavity of the front section of the mounting channel of the forceps handle 30 is provided with a step limit end surface 604, the reset piece 50 is a spring sleeved on the slide bar 202, the rear end of the spring is connected with the front end surface of the driving head 204, and the front end of the spring is connected with the step limit end surface 604; the side wall of the middle part of the forceps handle 30 is screwed with at least two screws 602 which are arranged along the radial direction of the forceps handle 30, and the screws 602 are arranged along the circumferential direction of the forceps handle 30 at intervals; the forceps handle 30 is provided with a screw connecting hole matched with the screw 602, the front end of the connecting column 601 is provided with a central through hole for the rear end of the forceps core 10 to pass through, the central through hole of the connecting column 601 at least penetrates to the area where the screw connecting hole is located, and the rear end of the screw 602 passes through the screw connecting hole and then locks and fixes the rear end of the forceps core 10.
In order to make the transmission structure more reliably stressed, the preferable scheme is as follows: the outer wall of the front end of the sliding rod 202 is provided with a protruding annular limiting end 203, and the annular limiting end 203 can control the retraction stroke of the sliding assembly 20, so that the reliability is improved. In order to facilitate processing and assembly and effectively ensure the connection strength, the annular limiting end 203 and the sliding rod 202 are preferably of an integrated structure; the driving head 204 is fixed to the rear end of the sliding rod 202 by a screw connection (i.e. the driving head 204 has an internal screw through hole, and the rear end of the sliding rod 202 has an external screw adapted to it).
For convenience of processing and assembly, the preferable scheme is as follows: the forceps handle 30 comprises a forceps handle head 301, a holding handle 302 and a forceps handle tail 303 which are sequentially arranged from front to back, the inner cavity of the forceps handle head 301 is arranged on the step limiting end face 604, the holding handle penetrating groove 605 is arranged on the holding handle 302, the connecting column 601 is arranged on the front end face of the forceps handle tail 303, the forceps handle head 301 and the holding handle 302 are fixed through bonding, the axial hole of the holding handle 302 and the forceps handle tail 303 are fixed through threaded connection (namely, the axial hole of the holding handle 302 has an internal thread, and the forceps handle tail 303 has an external thread matched with the external thread). The screw attachment holes for mounting screws 602 are typically designed at the threaded connection of the handle 302 to the forceps handle tail 303.
For the convenience of processing and manufacturing, the preferable scheme is as follows: the slide bar 202, the driving head 204, the forceps handle head 301, the handle 302 and the forceps handle tail 303 are all made of 3D printing materials, such as PA12 nylon materials. Adopt 3D to print the material and can realize that intraocular tweezers 3D prints integrated into one piece, compare in traditional processing mode, can effectively process and material cost.
In order to make the hand feeling of holding better, the preferable scheme is as follows: the outer surface of the grab handle 302 and the outer surface of the forceps handle tail 303 are provided with frosted treatment layers; the outer surface of the forceps handle tail 303 is provided with a strip-shaped groove 606 which is bent transversely. The outer surface is frosted, so that the friction coefficient of the forceps handle 30 is improved to a certain extent, and the surgical risk caused by the sliding of instruments in the surgical process is reduced.
Compared with the length of the working end of the common retinal forceps of 28mm-31mm, the length of the working end of the forceps core 10 is set to be 32mm-38mm, so that the surgical requirements of patients with high myopia are met. Wherein the working end length is shown at 100 in figure 8.
For the convenience of processing and manufacturing, the preferable scheme is as follows: the forceps core 10 comprises two forceps sheets 101 and a connecting shaft 102 of a hollow structure, the forceps sheets 101 are arranged in parallel, a forceps claw 103 is arranged at the front end of each forceps sheet 101, and the tail end of each forceps sheet 101 penetrates through the connecting shaft 102 and then is flattened to fix the forceps sheet 101.
Claims (10)
1. The ophthalmic forceps for microscopic fundus surgery comprise a forceps core (10), a sliding assembly (20), a forceps handle (30) and a resetting piece (50), wherein the sliding assembly (20) is installed in an installation channel at the front end of the forceps handle (30) and can axially reciprocate relative to the forceps handle (30), the sliding assembly (20) comprises a sleeve (201) located at the front end of the sliding assembly, forceps claws (103) capable of being automatically separated are arranged at the front end of the forceps core (10), the rear end of the forceps core (10) penetrates through the sleeve (201) and then is fixedly connected with the forceps handle (30), the sleeve (201) can enable the forceps claws (103) to be closed along with the forward movement of the sliding assembly (20), and the resetting piece (50) is arranged in the forceps handle (30) and used for pushing the sliding assembly (20) to reset backwards; the method is characterized in that: the fixing structure of the tweezers comprises a connecting column (601) fixedly arranged in a mounting channel of a tweezers handle (30), the axis of the connecting column (601) is coaxial with or parallel to the axis of a sleeve (201), an elastic press ring (40) is sleeved on the connecting column (601), one end, close to the tail of the tweezers handle (30), of the connecting column (601) is provided with a press ring limiting end face (603) used for axial limiting of the elastic press ring (40), the sliding assembly (20) comprises a driving head (204) located at the tail end of the sliding assembly, the elastic press ring (40) can radially contract and expand along the tweezers handle (30) by means of elastic deformation capacity of the elastic press ring, when the elastic press ring (40) contracts inwards, the front end face of the elastic press ring (40) can act on the driving head (204) to enable the sliding assembly (20) to move forwards, a press handle operating portion (401) is arranged on the side face of the elastic press ring (40), the tweezers handle (30) is provided with an outer end penetrating groove (605) corresponding to the press operating portion (401), and the pressing operating portion (401) has a penetrating handle portion corresponding to an outer end face of the outer protruding surface of the penetrating groove (605).
2. The ophthalmic forceps for microscopic fundus surgery according to claim 1, wherein: the pressing operation parts (401) are symmetrically distributed relative to the axis of the connecting column (601).
3. The ophthalmic forceps for microscopic fundus oculi surgery according to claim 1, wherein: the elastic pressing ring (40) is a hollow cylinder, the section of the elastic pressing ring (40) in the radial direction of the forceps handle (30) is oval, and the section of the elastic pressing ring (40) in the axial direction of the forceps handle (30) comprises a first arc line and a second arc line which are symmetrically distributed relative to the axis of the connecting column (601).
4. The ophthalmic forceps for microscopic fundus surgery according to claim 3, wherein: the long axis of the ellipse corresponding to the section of the elastic press ring (40) in the radial direction of the forceps handle (30) is coincided with the central plane of the grab handle through groove (605).
5. The ophthalmic forceps for microscopic fundus surgery according to claim 1, wherein: the sliding assembly (20) comprises a sliding rod (202) in sliding fit with the front section of the forceps handle (30), and the front end of the sliding rod (202) is provided with a central through hole for the sleeve (201) to pass through; the outer surface of the rear end of the sleeve (201) is fixed with the central through hole of the sliding rod (202) in a gluing mode; the inner cavity of the front section of the mounting channel of the forceps handle (30) is provided with a step limiting end surface (604), the resetting piece (50) is a spring sleeved on the sliding rod (202), the rear end of the spring is connected with the front end surface of the driving head (204), and the front end of the spring is connected with the step limiting end surface (604); the side wall of the middle part of the forceps handle (30) is screwed with at least two screws (602) which are arranged along the radial direction of the forceps handle (30), and the screws (602) are arranged at intervals along the circumferential direction of the forceps handle (30); the forceps handle (30) is provided with a screw connecting hole matched with the screw (602), the front end of the connecting column (601) is provided with a central through hole for the rear end of the forceps core (10) to pass through, the central through hole of the connecting column (601) at least penetrates to the area where the screw connecting hole is located, and the rear end of the forceps core (10) is locked and fixed after the tail end of the screw (602) passes through the screw connecting hole.
6. The ophthalmic forceps for microscopic fundus surgery according to claim 5, wherein: the outer wall of the front end of the sliding rod (202) is provided with a protruding annular limiting end (203), and the annular limiting end (203) and the sliding rod (202) are of an integral structure; the driving head (204) is fixedly connected with the rear end of the sliding rod (202) through threads.
7. The ophthalmic forceps for microscopic fundus oculi surgery according to claim 5, wherein: the forceps handle (30) comprises a forceps handle head (301), a grab handle (302) and a forceps handle tail (303), the inner cavity of the forceps handle head (301) is arranged on the step limiting end face (604), the grab handle penetrates through the groove (605) to be arranged on the grab handle (302), the connecting column (601) is arranged on the front end face of the forceps handle tail (303), the forceps handle head (301) is fixed to the grab handle (302) through bonding, and the axial center hole of the grab handle (302) is fixed to the forceps handle tail (303) through threaded connection.
8. The ophthalmic forceps for microscopic fundus surgery according to claim 7, wherein: the slide bar (202), the driving head (204), the forceps handle head (301), the grab handle (302) and the forceps handle tail (303) are all made of 3D printing materials; the outer surface of the grab handle (302) and the outer surface of the forceps handle tail (303) are provided with frosted treatment layers; the outer surface of the forceps handle tail (303) is provided with a strip-shaped groove (606) which is transversely bent.
9. The ophthalmic forceps for microscopic fundus surgery according to claim 1, wherein: the forceps core (10) comprises two forceps sheets (101) and a hollow connecting shaft (102), the forceps sheets (101) are arranged in parallel, forceps claws (103) are arranged at the front end of each forceps sheet (101), and the tail ends of the forceps sheets (101) are flattened after penetrating into the connecting shaft (102) so as to fix the forceps sheets (101).
10. The ophthalmic forceps for microscopic fundus surgery according to any one of claims 1 to 9, wherein: the length of the working end of the forceps for eyes is set to be 32mm-38mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211725192.3A CN115944459A (en) | 2022-12-30 | 2022-12-30 | Ophthalmic forceps for microscopic fundus surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211725192.3A CN115944459A (en) | 2022-12-30 | 2022-12-30 | Ophthalmic forceps for microscopic fundus surgery |
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