CN102846429A - Corneal trephine - Google Patents
Corneal trephine Download PDFInfo
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- CN102846429A CN102846429A CN2012103200871A CN201210320087A CN102846429A CN 102846429 A CN102846429 A CN 102846429A CN 2012103200871 A CN2012103200871 A CN 2012103200871A CN 201210320087 A CN201210320087 A CN 201210320087A CN 102846429 A CN102846429 A CN 102846429A
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Abstract
The invention provides a corneal trephine. The corneal trephine comprises a body part in a hollow cylindrical shape, a knife part in an approximate hollow cylindrical shape, and a finger holding part, wherein the thickness of a column wall of the knife part is gradually reduced from top to bottom; a knife edge for annular cutting is formed at the bottommost end of the column wall; an upper end of the knife edge is fixedly connected with a lower end of the body part; a central shaft line of the knife edge is overlapped with that of the body part; finger holding part comprises a hollow cylindrical body and lug bodies symmetrically fixed to an outer side surface of the hollow cylindrical body, the hollow cylindrical body of the finger holding part can be rotationally sleeved onto the body part; and an alignment device is also arranged on the finger holding part. When being used for corneal transplantation, the corneal trephine can be easily and accurately fixed to a cornea of a patient so as to avoid shifting or separation of the corneal trephine in the corneal transplantation, a proper and uniform pressure can be easily applied to the corneal trephine, and a knife feeding situation can be conveniently observed, thereby enabling the corneal transplantation to be safer and accurate.
Description
Technical field
The present invention relates to the surgical clinical medical apparatus and instruments, specifically, relate to a kind of corneal trephine.
Background technology
The blinding keratopathy becomes the world today's three large blinding oculopathy with diabetic retinopathy, glaucoma.The blinding keratopathy is many by due to infected keratitis, cerneal dystrophy, corneal degeneration or the cornea wound.The unique method that at present, blinding keratopathy patient is recovered lost eyesight is to carry out corneal graft.According to statistics, China has more than 150 ten thousand blinding keratopathy patients now, but because the source of cornea donor is very limited, the patient that can accept corneal graft every year only has about 10,000.Therefore, improve cornea donor survival rate, to improve corneal graft, reduce post-operative complication in the art be vital for the success of corneal graft.
In corneal graft, be operation the most key in the whole operation with the process of corneal trephine ring cutting patient cornea.Fig. 1 is the schematic perspective view of ring cutting patient cornea in the corneal graft, and Fig. 2 is the generalized section of ring cutting patient cornea in the corneal graft.As depicted in figs. 1 and 2, eyeball is made of wall of eyeball and eyeball content, and the outermost layer of wall of eyeball is made of cornea 1 and sclera 2, and wherein, front 1/6 is transparent cornea 1, and rear 5/6 is milky sclera 2.The rear of cornea 1 is iris 3 and crystalline lens 4, has formed anterior chamber 5 between cornea 1 and iris 3, has been full of aqueous humor among the anterior chamber 5.In corneal graft, at first to carry out the ring cutting excision to patient's cornea 1 with corneal trephine 100 ', and then normal cornea donor is transplanted on patient's the eyeball.
Fig. 3 shows the side view of a kind of corneal trephine of present use.As shown in Figure 3, the structure of existing corneal trephine 100 ' is fairly simple, comprise body 10 and cutter section 20, wherein, body 10 is hollow cylindrical, cutter section 20 is also approximate to be hollow cylindrical, but the thickness of its post jamb reduces from top to bottom gradually and form bottom the edge of a knife 21 that can carry out ring cutting at post jamb.The upper end of the lower end of body 10 and cutter section 20 is fixed together, and the central axes of the central axis of body 10 and cutter section 20.
When using existing corneal trephine 100 ' that patient's cornea is carried out ring cutting, the edge of a knife 21 with corneal trephine 100 ' places on patient's cornea first, then use the upper end of the body 10 of a have gentle hands light press corneal trephine 100 ', contact the lateral surface of body 10 with the another hands with rotation corneal trephine 100 ', thereby make corneal trephine 100 ' cut patient's cornea.From top description as can be known, when using this corneal trephine 100 ', by pressing the upper end of the hollow cylindrical body 10 of corneal trephine 100 ' to fix corneal trephine 100 ' with light finger.If finger pressure is large, finger was just large with the friction of body 10 when body 10 rotated so, thereby the rotation of body 10 is difficult for, if and finger pressure is little, the feed of cutter section 20 is just slow so, therefore, in operation, need regularly to regulate the pressure of finger, like this, not finger corneal trepan 100 ' fixing very not firm, and also it is wayward to be applied to size and the uniformity of the pressure on the corneal trephine 100 '.This just usually cause corneal trephine 100 ' on patient's cornea displacement in addition come off, and the ring cutting degree of depth and the ring cutting uniformity of very difficult control corneal trephine 100 ', to such an extent as to it is local or integrally penetrate patient's cornea and damage iris and crystalline lens suddenly the edge of a knife 21 to occur easily, for operation brings complication in the art.
Also has another kind of corneal trephine.This corneal trephine utilizes negative-pressure suction ring to be fixed on patient's cornea, and rotates corneal trephine by hands and excise patient's cornea.Although this corneal trephine utilizes negative-pressure suction ring to be fixed on patient's cornea, and can come by the rotational angle of this corneal trephine ring cutting-in degree, but its disadvantage is complicated operation, disposable use and expensive, has greatly increased patient's financial burden.
Summary of the invention
The object of the present invention is to provide a kind of corneal trephine, so that when using this corneal trephine to carry out corneal graft, can be easier and more accurately this corneal trephine is fixed on patient's the cornea to avoid this corneal trephine displacement in art, to occur or to break away from, can be more easily apply suitable and uniform pressure and observe more easily the feed situation at this corneal trephine, thereby make more safety and accurately of operation.
To achieve these goals, the invention provides a kind of corneal trephine, this corneal trephine comprises: body, and this body is hollow cylindrical; Cutter section, this cutter section is approximate hollow cylindrical, the thickness of its post jamb reduce gradually from top to bottom and this post jamb form bottom the edge of a knife can carry out ring cutting, the upper end of this cutter section is fixedly connected with the lower end of described body, and the central axes of the central axis of this cutter section and described body; And refer to hold up section, and this refers to that the section of holding up comprises the hollow cylindrical main body and is fixed on symmetrically ear body on this main body lateral surface, this refers to hold up the main body of section to be enclosed within rotationally on the described body, and this refers to hold up the central axes of central axis and the described body of section.
Preferably, can be provided with turning handle on the lateral surface of described body.
Preferably, described cutter section can be for detachably being fixedly connected with described body.
Preferably, described finger is held up in the section can also be provided with sight, and the foresight of this sight is in described finger and holds up on the central axis of hollow cylindrical main body of section.
According to top narration and the practice as can be known, when using corneal trephine of the present invention to carry out corneal graft, hold up ear body in the section with a hand steered finger of living this corneal trephine, thereby this corneal trephine is fixed on patient's the cornea, stir the turning handle on the body of this corneal trephine with the another hands, thereby the cutter section of this corneal trephine is rotated, so that with patient's corneal ablation.Because by holding up ear body in the section (rather than pressing the body upper end) to fix described corneal trephine by end finger and exerting pressure to this corneal trephine, thereby and when rotating cutter section, the rotation body refers to that the section of holding up does not and then rotate, therefore, in whole operation, be easy to be fixed on this corneal trephine on patient's the cornea and avoid this corneal trephine displacement in art, to occur or break away from, and be easy to apply suitable and uniform pressure at this corneal trephine.In addition, because finger is not according to the body upper end at described corneal trephine, and the finger on body is held up and also is provided with sight in the section, therefore, in operation, can and refer to by body, cutter section hold up the central through hole of section and sight more accurately described corneal trephine to be fixed on patient's the cornea, and can observe feed situation and displacement situation, thereby make more safety and accurate of operation.
Description of drawings
Fig. 1 is the schematic perspective view of ring cutting patient cornea in the corneal graft;
Fig. 2 is the generalized section of ring cutting patient cornea in the corneal graft;
Fig. 3 shows the side view of a kind of corneal trephine of present use;
Fig. 4 shows the perspective view of the described corneal trephine of one embodiment of the present of invention;
Fig. 5 shows the sectional axonometric drawing of the described corneal trephine of one embodiment of the present of invention; And
Fig. 6 shows the three-dimensional exploded view of the described corneal trephine of one embodiment of the present of invention.
Wherein, Reference numeral is:
1, cornea; 2, sclera; 3, iris; 4, crystalline lens; 5, anterior chamber;
100 ', existing corneal trephine; 100, corneal trephine of the present invention;
10, body; 11, outer step; 12, turning handle;
20, cutter section; 21, the edge of a knife;
30, refer to hold up section; 31, main body; 32, ear body; 33, sight; 33a, foresight.
The specific embodiment
The embodiment of corneal trephine of the present invention is described below with reference to the accompanying drawings.Obviously, in situation without departing from the spirit and scope of the present invention, can revise described embodiment with various mode.Therefore, accompanying drawing is illustrative with being described in essence, rather than is used for the protection domain of restriction claim.In addition, in this manual, accompanying drawing draws not in scale.
Fig. 4 shows the perspective view of the described corneal trephine of one embodiment of the present of invention, and Fig. 5 shows the sectional axonometric drawing of the described corneal trephine of this embodiment, and Fig. 6 shows the three-dimensional exploded view of the described corneal trephine of this embodiment.Such as Fig. 4-shown in Figure 6, the described corneal trephine 100 of one embodiment of the present of invention mainly comprises body 10, cutter section 20 and refers to hold up section 30.
Refer to hold up section 30 to comprise hollow cylindrical main body 31 and be fixed on symmetrically two (or a plurality of) ear bodies 32 on these main body 31 lateral surface.Refer to hold up the main body 31 of section 30 to be enclosed within rotationally on the body 10, and refer to hold up the central axes of central axis and the body 10 of section 30.The mode that finger holds up the main body 31 of section 30 to be enclosed within rotationally on the body 10 has multiple.In the embodiment of Fig. 4-shown in Figure 6, be formed with outer step 11 in the upper end of the body 10 of corneal trephine 100, refer to hold up the main body 31 of section 30 to be enclosed within the upper end of body 10 and be supported on the outer step 31.In another embodiment, can be formed with interior step in the upper end of the body 10 of corneal trephine 100, refer to hold up the main body 31 of section 30 to be enclosed within the upper end of body 10 and be supported in this on step.In another embodiment, refer to hold up the main body 31 of section 30 can encircle in the lateral surface that is embedded in body 10.
For the ease of rotating the body 10 of corneal trephine 100, a plurality of turning handles 12 can be set at the lateral surface of body 10.
In addition, referring to hold up in the section 30 that sight 33 can also be set.In the present embodiment, sight 33 is the cross sight, and in other embodiments, sight 33 can be sight (such as concentric round sight) or its combination of other form.The foresight 33a of sight 33 is on the central axis of the hollow cylindrical main body 31 that refers to hold up section 30.
Using method and the advantage thereof of corneal trephine of the present invention are described below in conjunction with Fig. 4-Fig. 6.
When using the described corneal trephine 100 of one embodiment of the present of invention to carry out corneal graft, first mark central point at patient's cornea, then corneal trephine 100 edges of a knife are placed on patient's the cornea down, and the aiming at of the central point that marks on the foresight 33a that holds up the sight 33 in the section 30 by the finger of corneal trephine 100 and the cornea, corneal trephine 100 is accurately placed on patient's the cornea.Then, hold up ear body 32 in the section 30 with a hand steered finger of living this corneal trephine 100, thereby this corneal trephine 100 is fixed on patient's the cornea, stir the turning handle 12 on the body 10 of this corneal trephine 100 with the another hands, thereby the cutter section 20 of this corneal trephine 100 is rotated, so that with patient's corneal ablation.
Because upper end by holding up the ear body 32(in the section 30 by end finger rather than pressing body 10) fixes corneal trephine 100 and exert pressure to corneal trephine 100, thereby and when rotating cutter section 20, rotation body 10 refer to hold up section 30 and then not rotate, therefore, in whole operation, be easy to be fixed on corneal trephine 100 on patient's the cornea and avoid corneal trephine 100 displacement in art, to occur or break away from, and be easy to apply suitable and uniform pressure at corneal trephine 100, and do not need repeatedly to regulate the size of institute's application of force.In addition, because finger is not according to the upper end at the body 10 of corneal trephine 100, and hold up at the finger of body 10 upper ends and also to be provided with sight 33 in the section 30, therefore, in operation, can and refer to by body 10, cutter section 20 hold up the central through hole of section 30 and sight 33 more accurately corneal trephine 100 to be fixed on patient's the cornea, and can observe feed situation and displacement situation, thereby make more safety and accurate of operation.
For the corneal trephine that the invention described above proposes, can also make various improvement on the basis that does not break away from content of the present invention.Therefore, protection scope of the present invention should be determined by the content of appending claims.
Claims (4)
1. corneal trephine comprises:
Body, this body is hollow cylindrical;
Cutter section, this cutter section is approximate hollow cylindrical, the thickness of its post jamb reduce gradually from top to bottom and this post jamb form bottom the edge of a knife can carry out ring cutting, the upper end of this cutter section is fixedly connected with the lower end of described body, and the central axes of the central axis of this cutter section and described body; And
Refer to hold up section, this refers to that the section of holding up comprises the hollow cylindrical main body and is fixed on symmetrically ear body on this main body lateral surface, and this refers to hold up the main body of section to be enclosed within rotationally on the described body, and this refers to hold up the central axes of central axis and the described body of section.
2. corneal trephine as claimed in claim 1, wherein,
Be provided with turning handle on the lateral surface of described body.
3. corneal trephine as claimed in claim 1, wherein,
Described cutter section and described body are for detachably being fixedly connected with.
4. corneal trephine as claimed in claim 1, wherein,
Described finger is held up and also is provided with sight in the section, and the foresight of this sight is in described finger and holds up on the central axis of hollow cylindrical main body of section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210320087.1A CN102846429B (en) | 2012-08-31 | 2012-08-31 | Fixed intelligent corneal trephine |
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| CN201210320087.1A CN102846429B (en) | 2012-08-31 | 2012-08-31 | Fixed intelligent corneal trephine |
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| CN102846429A true CN102846429A (en) | 2013-01-02 |
| CN102846429B CN102846429B (en) | 2014-10-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107028700A (en) * | 2017-04-05 | 2017-08-11 | 青岛大学附属医院 | Corneal epithelial flap former and corneal epithelial flap forming method |
| US10149785B2 (en) | 2016-01-04 | 2018-12-11 | Kyle Thistle | Device and method for trephine alignment |
| CN110384582A (en) * | 2019-07-17 | 2019-10-29 | 温州医科大学附属眼视光医院 | A kind of air pocket method Deep liminal keratoplasty device and its application method |
| CN114224603A (en) * | 2022-01-12 | 2022-03-25 | 北京大学人民医院 | Negative pressure marked cornea trephine and operation method thereof |
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| CN2324998Y (en) * | 1997-12-26 | 1999-06-23 | 泰安市中心医院 | Assist rack for corneal trephine |
| CN2855386Y (en) * | 2005-12-09 | 2007-01-10 | 重庆医科大学 | Circular cutter for amniotic membrane |
| CN200984280Y (en) * | 2006-11-29 | 2007-12-05 | 苏州大学附属第一医院 | Integrated corneal epithelium saw |
| CN201158053Y (en) * | 2008-02-26 | 2008-12-03 | 张新战 | Pharmaceutical tablet cutting apparatus |
| CN201283034Y (en) * | 2008-11-05 | 2009-08-05 | 柏文 | Synchronous equivalent injection and suction device for ophthalmological operation |
| CN201939391U (en) * | 2011-01-26 | 2011-08-24 | 魏义花 | Negative pressure trepan for skin biopsy |
| CN202821803U (en) * | 2012-08-31 | 2013-03-27 | 北京大学第三医院 | Corneal trephine |
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Patent Citations (7)
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| CN2324998Y (en) * | 1997-12-26 | 1999-06-23 | 泰安市中心医院 | Assist rack for corneal trephine |
| CN2855386Y (en) * | 2005-12-09 | 2007-01-10 | 重庆医科大学 | Circular cutter for amniotic membrane |
| CN200984280Y (en) * | 2006-11-29 | 2007-12-05 | 苏州大学附属第一医院 | Integrated corneal epithelium saw |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10149785B2 (en) | 2016-01-04 | 2018-12-11 | Kyle Thistle | Device and method for trephine alignment |
| CN107028700A (en) * | 2017-04-05 | 2017-08-11 | 青岛大学附属医院 | Corneal epithelial flap former and corneal epithelial flap forming method |
| CN110384582A (en) * | 2019-07-17 | 2019-10-29 | 温州医科大学附属眼视光医院 | A kind of air pocket method Deep liminal keratoplasty device and its application method |
| CN114224603A (en) * | 2022-01-12 | 2022-03-25 | 北京大学人民医院 | Negative pressure marked cornea trephine and operation method thereof |
| CN114224603B (en) * | 2022-01-12 | 2023-06-20 | 北京大学人民医院 | Negative pressure marked cornea trephine and operation method thereof |
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| Publication number | Publication date |
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| CN102846429B (en) | 2014-10-15 |
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Effective date of registration: 20160420 Address after: Suzhou City, Jiangsu province Jinfeng Road 215000 No. 8 Patentee after: Suzhou Bel one cutting edge of a knife or a sword Medical Devices Co., Ltd. Address before: 100191 Haidian District Garden North Road, No. 49, Beijing Patentee before: The Third Affiliated Hospital of Peking University |
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Effective date of registration: 20190417 Address after: 215000 Standard Factory Building No. 3, Industrial Village 300 Qingchengshan Road, Suzhou High-tech Zone, Jiangsu Province Patentee after: Suzhou Bi Li Medical Technology Co., Ltd. Address before: 215000 No. 8 Jinfeng Road, Suzhou City, Jiangsu Province Patentee before: Suzhou Bel one cutting edge of a knife or a sword Medical Devices Co., Ltd. |