CN221411509U - Variable diameter fixed depth cornea trephine - Google Patents
Variable diameter fixed depth cornea trephine Download PDFInfo
- Publication number
- CN221411509U CN221411509U CN202323019350.6U CN202323019350U CN221411509U CN 221411509 U CN221411509 U CN 221411509U CN 202323019350 U CN202323019350 U CN 202323019350U CN 221411509 U CN221411509 U CN 221411509U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- tool bit
- fixed
- limiting
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000004087 cornea Anatomy 0.000 title claims abstract description 27
- 210000003128 head Anatomy 0.000 claims abstract 5
- 239000010437 gem Substances 0.000 claims description 7
- 229910001751 gemstone Inorganic materials 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000013013 elastic material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 4
- 239000010935 stainless steel Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 206010023365 keratopathy Diseases 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 206010010996 Corneal degeneration Diseases 0.000 description 1
- 208000028006 Corneal injury Diseases 0.000 description 1
- 206010012667 Diabetic glaucoma Diseases 0.000 description 1
- 206010012689 Diabetic retinopathy Diseases 0.000 description 1
- 208000003923 Hereditary Corneal Dystrophies Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 206010011005 corneal dystrophy Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000002458 infectious effect Effects 0.000 description 1
- 206010023332 keratitis Diseases 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The utility model relates to the technical field of medical equipment, and discloses a cornea trephine with variable diameter and fixed depth, which comprises a threaded adjusting scale handle, a movable sleeve, a lower connecting rod, a tool bit fixing ring, an upper connecting rod and a rotary sleeve, and further comprises: the movable sleeve is connected to the surface of the screw thread adjusting scale handle in a sliding manner, the lower connecting rod is hinged to the bottom of the surface of the screw thread adjusting scale handle, and the other end of the lower connecting rod is hinged to the inner side of the cutter head fixing ring; the utility model can adjust the diameter of the trephine according to the requirement, accurately and uniformly cut the fixed depth, and avoid deep cutting through the cornea of a patient, shallow cutting and uneven cutting, thereby ensuring more accurate and safe operation, solving the defects that the common stainless steel trephine needs to be repeatedly replaced to select the proper diameter, the cutting depth is difficult to judge, easy to deviate and the like when in use, and greatly increasing the medical insurance payment and the economic burden of the patient.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a cornea trephine with a variable diameter and a fixed depth.
Background
Blinding keratopathy, together with diabetic retinopathy and glaucoma, is three major blinding eye diseases in the world today. Blinding keratopathy is often caused by infectious keratitis, corneal dystrophy, corneal degeneration, or corneal trauma. The only current method that can be used to restore the vision of patients with blinding keratopathy is to perform cornea transplant surgery. More than 150 ten thousand blind keratopathy patients exist in China, but only about 1 ten thousand patients can receive cornea transplantation operation each year due to limited sources of cornea donors. Therefore, improving the survival rate of the cornea donor, perfecting the cornea transplant operation, and reducing postoperative complications in the operation are of great importance for the success of the cornea transplant operation.
The prior clinical trephine mainly comprises two kinds of common stainless steel trephine, wherein the stainless steel trephine is a hollow cylinder type fixed-size annular cutting knife with the diameter increased by 0.25mm, and has the defects of difficult judgment, easy deflection and the like of proper diameter and cutting depth which are required to be repeatedly replaced when the clinical trephine is used, the cornea trephine is fixed on the cornea of a patient by utilizing a negative pressure suction ring, and the cornea depth of the cornea of the patient is cut by manually rotating the angle of the cornea trephine.
Disclosure of utility model
The utility model aims to provide a cornea trephine with variable diameter and fixed depth, which can adjust the diameter of the trephine as required, and can accurately and uniformly cut the fixed depth, thereby avoiding deep cutting through the cornea of a patient, shallow cutting and uneven cutting, and further ensuring more accurate and safer operation.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fixed degree of depth cornea trephine of variable diameter, includes screw thread adjustment scale handle, removal cover, lower connecting rod, tool bit solid fixed ring, goes up connecting rod and swivel sleeve, still includes:
The rotary sleeve is in threaded connection with the threaded adjustment scale handle;
The rotary tool comprises a tool bit fixed ring, a precious stone tool bit and limiting clamping blocks, wherein the tool bit fixed ring is connected to the top of the tool bit fixed ring, the precious stone tool bit is fixed to the bottom of the tool bit fixed ring, the limiting clamping blocks are fixed to the two sides of the movable sleeve, limiting grooves are formed in the surface of the rotary sleeve, limiting blocks connected with the limiting grooves in a rotary mode are fixed to the inner sides of the limiting clamping blocks, and limiting structures used for positioning the rotary sleeve are arranged between the rotary sleeve and the limiting clamping blocks.
Preferably, the limit structure comprises a limit disc fixed on the surface of the rotary sleeve, a plurality of through holes formed in the surface of the limit disc and a bump fixed on one side of the limit clamping block, and a fixing pin is connected between the through holes and the bump in a threaded manner.
Preferably, the through holes are uniformly distributed on the surface of the limiting disc, and the diameter of the through holes is larger than that of the fixing pins.
Preferably, the surface of the rotary sleeve is fixedly provided with a plurality of rubber strips which are uniformly distributed on the surface of the rotary sleeve.
Preferably, the thickness of the limiting block is smaller than the depth of the limiting groove and the height of the limiting block is smaller than the width of the limiting groove.
Preferably, the inner diameter of the movable sleeve is larger than the outer diameter of the threaded adjusting scale handle, and the inner side of the movable sleeve adopts a planar design.
Preferably, the tool bit fixing ring and the tool bit fixing ring are made of elastic materials.
Preferably, the diameters of the lower connecting rod and the upper connecting rod are the same, and the lower connecting rod and the upper connecting rod are uniformly distributed around the screw thread adjusting scale handle.
Preferably, the bottom of the tool bit pushing ring and the bottom of the tool bit fixing ring are designed to be flush, and the tool bit pushing ring is located on the outer side of the tool bit fixing ring.
Preferably, a rotating handle is fixed at the top of the tool bit pushing ring, and the rotating handle is located on the central line of the tool bit pushing ring.
Compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, the upper connecting rod is driven by the rotating sleeve to drive the tool bit pushing ring and the tool bit fixing ring to shrink inwards so as to adjust the diameter, the diameter of the trephine can be adjusted according to the requirement, and the fixed depth of cutting can be accurately and uniformly, so that the deep cutting through the cornea of a patient, the shallow cutting and the uneven cutting are avoided, the operation is more accurate and safer, the defects that the proper diameter is required to be selected by repeated replacement, the cutting depth is difficult to judge, the deviation is easy to occur and the like when the common stainless steel trephine is used are solved, and the problems of medical insurance payment and economic burden of the patient are greatly increased.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic view of a partial perspective structure of the present utility model;
FIG. 3 is a schematic view of a partial perspective structure of the present utility model;
fig. 4 is a schematic view of a partial perspective structure of the present utility model.
In the figure: 1. a thread adjusting scale handle; 2. a moving sleeve; 3. a lower connecting rod; 4. a bit fixing ring; 5. an upper connecting rod; 6. a rotating sleeve; 7. the tool bit pushes the ring; 8. a gemstone bit; 9. a limit clamping block; 10. a limit groove; 11. a limiting block; 12. a limit structure; 121. a limiting disc; 122. a through hole; 123. a bump; 124. a fixing pin; 13. a rubber strip; 14. a rotating handle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, a cornea trephine with a variable diameter and fixed depth comprises a threaded adjusting scale handle 1, a moving sleeve 2, a lower connecting rod 3, a tool bit fixing ring 4, an upper connecting rod 5 and a rotating sleeve 6, wherein the moving sleeve 2 is slidably connected to the surface of the threaded adjusting scale handle 1, the lower connecting rod 3 is hinged to the bottom of the surface of the threaded adjusting scale handle 1, the other end of the lower connecting rod 3 is hinged to the inner side of the tool bit fixing ring 4, the outer end of the upper connecting rod 5 is hinged to the inner side of the tool bit fixing ring 4, the other end of the upper connecting rod 5 is hinged to the outer side of the moving sleeve 2, the rotating sleeve 6 is in threaded connection with the threaded adjusting scale handle 1, the rotating sleeve 6 can be screwed up and down on the threaded adjusting scale handle 1, the top of the tool bit fixing ring 4 is rotatably connected with a tool bit pushing ring 7, the bottom of the tool bit pushing ring 7 is fixedly provided with a jewel tool bit 8, the tool bit pushing ring 7 can drive the tool bit 8 to rotate, cornea cutting is conveniently carried out, both sides of the moving sleeve 2 are fixedly provided with limiting blocks 9, the surface of the rotating sleeve 6 is provided with limiting grooves 10, the inner sides of the limiting blocks 9 are fixedly provided with limiting blocks 11, the limiting blocks 11 are in the limiting blocks 10, the limiting blocks 11 are matched with the limiting grooves 10, the limiting blocks 10 can be matched with the limiting grooves 10 to rotate 6, and the rotating sleeve 6 can be rotatably driven by the rotating sleeve 6, and the rotating sleeve 6 is rotatably and the rotating by the limiting sleeve 6.
The limit structure 12 comprises a limit disc 121, the limit disc 121 is fixed on the surface of the rotary sleeve 6, a plurality of through holes 122 are formed in the surface of the limit disc 121, one side of each limit clamping block 9 is fixedly provided with a convex block 123, a fixing pin 124 is connected between each through hole 122 and each convex block 123 in a threaded manner, each fixing pin 124 can be connected with each limit clamping block 9, the rotary sleeve 6 is positioned, deflection after adjustment is avoided, the through holes 122 are uniformly distributed on the surface of the limit disc 121, the diameter of each through hole 122 is larger than that of each fixing pin 124, the adjustment accuracy can be improved due to uniform distribution, and the position of the rotary sleeve 6 can be adjusted more accurately.
The surface of the rotary sleeve 6 is fixedly provided with a plurality of rubber strips 13, the rubber strips 13 are uniformly distributed on the surface of the rotary sleeve 6, the rubber strips 13 can improve the surface friction force of the rotary sleeve 6, and the trephine is convenient to accurately control to adjust the diameter.
The thickness of stopper 11 is less than the degree of depth of spacing groove 10, and the height of stopper 11 is less than the width of spacing groove 10, and this kind of design can limit the piece 11 and laminate spacing groove 10 more, improves the rotatory stability of swivel boot 6.
The internal diameter of the movable sleeve 2 is larger than the external diameter of the thread adjusting scale handle 1, the inner side of the movable sleeve 2 adopts a planar design, the design can ensure that the movable sleeve 2 stably slides on the thread adjusting scale handle 1, and the influence of threads on the movable sleeve 2 is avoided.
The tool bit fixing ring 4 is made of elastic materials, the tool bit pushing ring 7 is the same as the tool bit fixing ring 4 in material, the elastic materials can conveniently adjust the diameter of the tool bit fixing ring 4, and damage during adjustment is avoided.
The diameters of the lower connecting rod 3 and the upper connecting rod 5 are the same, the lower connecting rod 3 and the upper connecting rod 5 are uniformly distributed around the screw thread adjusting scale handle 1, and the adjusting stability can be improved through the design.
The bottom of tool bit push ring 7 is the parallel and level design with the bottom of tool bit solid fixed ring 4, and tool bit push ring 7 is located the outside of tool bit solid fixed ring 4, and the depth of cut of precious stone tool bit 8 can be guaranteed to the parallel and level design, avoids cutting through patient's cornea too deep cut.
The top of tool bit push ring 7 is fixed with the turning handle 14, and turning handle 14 is located the central line of tool bit push ring 7, and the turning handle 14 can laminate the finger, makes things convenient for the staff to rotate precious stone tool bit 8 rotatory.
Working principle: when cornea operation is carried out, medical personnel take out fixed pin 124 from through-hole 122 and lug 123 at first, after taking out, the staff can pinch rotary sleeve 6 with the hand and rotate, rotary sleeve 6 passes through stopper 11 and spacing groove 10 and drives movable sleeve 2 and reciprocate, and movable sleeve 2 can drive tool bit push ring 7 and the inside shrink of tool bit solid fixed ring 4 through last connecting rod 5 thereby adjust the diameter, the diameter range is 6-9mm, after adjusting the completion diameter personnel can use fixed pin 124 to screw in through-hole 122 and lug 123 again, thereby fixed pin 124 can be in the same place rotary sleeve 6 and movable sleeve 2 and fix the diameter size after the completion of adjustment, avoid the rebound influence precision under elastic effect, with tool bit push ring 7 and tool bit solid fixed ring 4 laminating in patient's eye when cornea operation is carried out, through the bottom of tool bit push ring 7 and the bottom of tool bit solid fixed ring 4 are the flush design and can guarantee the depth of cut of cutting of tool bit 8, avoid cutting through the cornea of patient.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a fixed degree of depth cornea trephine of variable diameter, includes screw thread adjustment scale handle (1), removes cover (2), lower connecting rod (3), tool bit solid fixed ring (4), goes up connecting rod (5) and swivel sleeve (6), its characterized in that still includes:
The device comprises a movable sleeve (2) which is slidably connected to the surface of a threaded adjusting scale handle (1), a lower connecting rod (3) which is hinged to the bottom of the surface of the threaded adjusting scale handle (1), and the other end of the lower connecting rod (3) is hinged to the inner side of a tool bit fixing ring (4), the outer end of an upper connecting rod (5) is hinged to the inner side of the tool bit fixing ring (4), the other end of the upper connecting rod (5) is hinged to the outer side of the movable sleeve (2), and a rotary sleeve (6) is in threaded connection with the threaded adjusting scale handle (1);
The rotary cutter comprises a cutter head pushing ring (7) rotationally connected to the top of a cutter head fixing ring (4), a jewel cutter head (8) fixed to the bottom of the cutter head pushing ring (7) and limiting clamping blocks (9) fixed to two sides of a movable sleeve (2), wherein limiting grooves (10) are formed in the surface of the rotary sleeve (6), limiting blocks (11) rotationally connected with the limiting grooves (10) are fixed to the inner sides of the limiting clamping blocks (9), and limiting structures (12) used for positioning the rotary sleeve (6) are arranged between the rotary sleeve (6) and the limiting clamping blocks (9).
2. A variable diameter fixed depth corneal trephine according to claim 1, characterized in that: the limiting structure (12) comprises a limiting disc (121) fixed on the surface of the rotary sleeve (6), a plurality of through holes (122) formed in the surface of the limiting disc (121) and a lug (123) fixed on one side of the limiting clamping block (9), and fixing pins (124) are connected between the through holes (122) and the lug (123) in a threaded mode.
3. A variable diameter fixed depth corneal trephine according to claim 2, characterized in that: the through holes (122) are uniformly distributed on the surface of the limiting disc (121), and the diameter of the through holes (122) is larger than that of the fixing pins (124).
4. A variable diameter fixed depth corneal trephine according to claim 1, characterized in that: the surface of the rotary sleeve (6) is fixedly provided with a plurality of rubber strips (13), and the rubber strips (13) are uniformly distributed on the surface of the rotary sleeve (6).
5. A variable diameter fixed depth corneal trephine according to claim 1, characterized in that: the thickness of the limiting block (11) is smaller than the depth of the limiting groove (10), and the height of the limiting block (11) is smaller than the width of the limiting groove (10).
6. A variable diameter fixed depth corneal trephine according to claim 1, characterized in that: the inner diameter of the movable sleeve (2) is larger than the outer diameter of the thread adjusting scale handle (1), and the inner side of the movable sleeve (2) adopts a planar design.
7. A variable diameter fixed depth corneal trephine according to claim 1, characterized in that: the tool bit fixing ring (4) and the tool bit fixing ring (4) are made of elastic materials.
8. A variable diameter fixed depth corneal trephine according to claim 1, characterized in that: the diameters of the lower connecting rod (3) and the upper connecting rod (5) are the same, and the lower connecting rod (3) and the upper connecting rod (5) are uniformly distributed around the screw thread adjusting scale handle (1).
9. A variable diameter fixed depth corneal trephine according to claim 1, characterized in that: the bottom of tool bit push ring (7) and the bottom of tool bit fixed ring (4) are the parallel and level design, tool bit push ring (7) are located the outside of tool bit fixed ring (4).
10. A variable diameter fixed depth corneal trephine according to claim 1, characterized in that: a rotating handle (14) is fixed at the top of the tool bit pushing ring (7), and the rotating handle (14) is positioned on the central line of the tool bit pushing ring (7).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202323019350.6U CN221411509U (en) | 2023-11-08 | 2023-11-08 | Variable diameter fixed depth cornea trephine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202323019350.6U CN221411509U (en) | 2023-11-08 | 2023-11-08 | Variable diameter fixed depth cornea trephine |
Publications (1)
Publication Number | Publication Date |
---|---|
CN221411509U true CN221411509U (en) | 2024-07-26 |
Family
ID=91980575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202323019350.6U Active CN221411509U (en) | 2023-11-08 | 2023-11-08 | Variable diameter fixed depth cornea trephine |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN221411509U (en) |
-
2023
- 2023-11-08 CN CN202323019350.6U patent/CN221411509U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0531756A2 (en) | Cam guided corneal trephine | |
CN108420463B (en) | Bone marrow puncture needle for hematology department | |
CN221411509U (en) | Variable diameter fixed depth cornea trephine | |
CN109465860A (en) | A kind of hand-held tree peony root system epidermis core pulling equipment | |
CN209172461U (en) | A kind of high-precision hard film external anesthetic puncture positioning device | |
CN110384582A (en) | A kind of air pocket method Deep liminal keratoplasty device and its application method | |
CN221357053U (en) | Minimally invasive medical scalpel | |
CN206641992U (en) | Cartilage piece topping machanism | |
CN110269662B (en) | bone removal tool | |
CN111977954A (en) | Compasses knife for glass cutting | |
CN204050002U (en) | Corneal trephine and matched handle | |
CN115586033A (en) | A tumor tissue sampling pen | |
CN113384397A (en) | But angle regulation's clinical scalpel of ophthalmology | |
CN210811701U (en) | Animal doctor uses corneal scissors | |
CN215739848U (en) | Artificial crystal scissors | |
CN202821803U (en) | Corneal trephine | |
CN212308060U (en) | Accurate slicer of costal cartilage | |
CN108527483B (en) | Biological patch cutter for cardiac surgery | |
CN210542040U (en) | Cornea trephine | |
CN216303638U (en) | Glass cutter with adjustable distance | |
CN222827721U (en) | Adjustable branch girdling device | |
CN219289892U (en) | Eyelash scissors for operation | |
CN211325422U (en) | Urinary clinical preputial circumcision device | |
CN219439692U (en) | Disposable marker for ophthalmic surgery | |
CN220801219U (en) | Ophthalmic scissors |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |