CN108703836A - Heat-insulating and shock-absorbing perfusion cannula - Google Patents
Heat-insulating and shock-absorbing perfusion cannula Download PDFInfo
- Publication number
- CN108703836A CN108703836A CN201810873885.4A CN201810873885A CN108703836A CN 108703836 A CN108703836 A CN 108703836A CN 201810873885 A CN201810873885 A CN 201810873885A CN 108703836 A CN108703836 A CN 108703836A
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- Prior art keywords
- syringe needle
- heat
- groove
- perfusion cannula
- perfusion
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- 230000010412 perfusion Effects 0.000 title claims abstract description 37
- 238000004945 emulsification Methods 0.000 abstract description 10
- 210000004087 cornea Anatomy 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000003685 thermal hair damage Effects 0.000 abstract description 4
- 230000010358 mechanical oscillation Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 230000005489 elastic deformation Effects 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 241001631457 Cannula Species 0.000 abstract 1
- 238000013017 mechanical damping Methods 0.000 abstract 1
- 210000000695 crystalline len Anatomy 0.000 description 9
- 208000002177 Cataract Diseases 0.000 description 6
- 210000005252 bulbus oculi Anatomy 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 210000001508 eye Anatomy 0.000 description 3
- 230000002980 postoperative effect Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000036573 scar formation Effects 0.000 description 1
- 210000003786 sclera Anatomy 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 208000029257 vision disease Diseases 0.000 description 1
- 230000004304 visual acuity Effects 0.000 description 1
- 230000004393 visual impairment Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
- A61F9/00745—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments using mechanical vibrations, e.g. ultrasonic
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
Denomination of invention：Heat-insulating and shock-absorbing perfusion cannula.The invention discloses a kind of ultrasonic emulsification instrument perfusion cannulas, are mainly made of front, middle part and rear portion three parts.The front is thinner, and inner surface has spiral groove side by side, front end to have opening.The liquid that intraocular is flowed into groove, can absorb the heat of super newborn syringe needle, play cooling effect.The edge of groove has resilient support and cushioning effect, reduces the contact area of tube wall and super newborn syringe needle, reduces the heat transfer between super newborn syringe needle and tube wall, in turn, alleviates thermal damage of the super newborn syringe needle to cornea tissue.The edge of groove can play the role of good mechanical damping by the elastic deformation of itself, reduce the mechanical vibrational energy for being transferred to cornea tissue, reduce the mechanical oscillation damage of cornea tissue.The rear inner surface has coupled structure, is conveniently fixed on handpiece front end.The middle part is connected between front and rear.
Description
Technical field
The present invention relates to a kind of surgical operation perfusion cannula, and more particularly to a kind of cataract ultrasonic emulsification instrument use
Heat-insulating and shock-absorbing perfusion cannula.
Background technology
Cataract is the common disease frequently-occurring disease of ophthalmology.Under normal condition, the lenticular shape approximation biconvex in human eye ball
Lens can will enter the light focusing of intraocular on eye ground.But several factors can make lenticular transparency
Decline, such as age or disease etc..Phacoscotasmus causes visual impairment to form cataract.Clinical treatment cataract at present
Most effective, most common method is the crystalline lens of surgical removal muddiness, while being implanted into transparent intraocular lens, makes ambient
It can focus on the retina.
Currently, the development trend of cataract operation is small notch, minimally invasiveization, " cataract ultrasound breast conserving surgery " is current clinic
Upper most common operation method.In the surgical procedure, elongated phacoemulsification needle is entered by the miniature incision of wall of eyeball
The high-frequency vibration of intraocular, phacoemulsification needle can crush emulsification lens tissue, then ultrasonic emulsification instrument by negative pressure by powder
Eyeball is sucked out in broken lens tissue.After the part of phacoscotasmus is completely removed, transparent intraocular lens are can plant.
Ultrasonic emulsification instrument includes mainly following components：Handpiece, phacoemulsification needle, perfusion cannula, electronic control
Platform, connecting pipe, connecting cable.Handpiece is connected by connecting pipe, connecting cable with electronic console.The front end of handpiece
Receive phacoemulsification needle and perfusion cannula.Perfusion cannula is sleeved on outside phacoemulsification needle, front opening, Phacoemulsification needle
The front end of head can be stretched out from the opening of perfusion cannula front end.Phacoemulsification needle is cannulated structure, rear end with from hand-held
Negative-pressure ward pipeline connection of the part to console.
In use, the front of both perfusion cannula and phacoemulsification needle by the small notch of cornea or sclera into
Enter intraocular.The internal diameter of perfusion cannula is more than the outer diameter of syringe needle, and perfusion liquid passes through the sky between perfusion cannula and phacoemulsification needle
Gap or other perfusion channel enter intraocular.The phacoemulsification needle of high-frequency vibration can crush emulsification lens tissue.Control
Platform can control the relevant parameter of negative pressure and ultrasonic energy, be sucked out by the open end of phacoemulsification needle, negative-pressure ward pipeline
The tissue of emulsification.But phacoemulsification needle high-frequency vibration under the driving of ultrasonic wave, heat is will produce, heat passes through perfusion
The tube wall of casing reaches ocular tissue, causes the thermal damage of incision tissue.Meanwhile the mechanical oscillation of phacoemulsification needle also may be used
To reach incision tissue by tube wall, cause the high-frequency vibration of incision tissue, and then leads to the damage of local organization.Moreover,
The high-frequency vibration of notch surrounding tissue can also cause local temperature further to increase, and then aggravate thermal damage.Incision tissue
Adverse consequences is caused by damage, and local organization deformation, cut closure is poor, increases postoperative wound leakage, entophthamia equivalent risk.Simultaneously
Postoperative scar formation, corneal astigmatism can be also aggravated, causes Postoperative visual acuity undesirable.However, there is presently no be effectively absorbed in
The concern casing of heat-insulating and shock-absorbing function can utilize, so, there is an urgent need for one kind capable of effectively reducing heat conduction and machinery for we
The new-type perfusion cannula of conduct vibrations reduces the damage of incision tissue, improves surgical effect.
Invention content
The disclosure describes a kind of protection perfusion cannula, includes mainly front, middle part and rear portion.The front is thinner, interior
There is spiral groove side by side on surface.The rear inner surface has coupled structure, is conveniently fixed on handpiece front end.The middle part
It is connected between front and rear.
Various aspects may include one or more following characteristics.The perfusion cannula axis is linear or arc.It is described
Casing front diameter is thinner, and the diameter of the front end of casing front further reduces, and forms the smaller front opening of diameter, front end
There are one sides or multiple casing side openings.In the middle part of described sleeve pipe between casing front and casing rear portion.Have in the middle part of casing
The diameter of section of transformation, one or more part can have tapered cross-section.Described sleeve pipe rear section is relatively large in diameter, interior table
Face has coupled structure, can be received on ultrasonic emulsification handle.
Various aspects may also include one or more following characteristics.The smooth outer surface of described sleeve pipe front.Described sleeve pipe
The inner surface of the portion segment of front has multiple spiral grooves side by side.The tangential direction of the groove and perfusion cannula axis
The angle of line is between 0 ° and 90 °.In some cases, the cross sectional shape of groove is in inverted trapezoidal.In other situations, groove
The cross section profiles of one or more parts be in other useful shapes, such as semicircle, triangle, " u "-shaped, " ︺ " shape, double throwings
Object is linear etc., but not limited to this locate the shape.The edge of groove is in carinate protuberance.In some cases, section of edge ridge
Face shape is trapezoidal.In other situations, the cross section profile of one or more parts of edge ridge is in other useful shapes, such as
Semicircle, triangle, " u "-shaped, " ︺ " shape, double-paraboloid are linear etc., but not limited to this locate the shape.In section Example
In, there are one edge ridges or multiple breakpoints so that adjacent grooves being capable of intercommunication.
One or more implementation details for illustrating the disclosure are described below.Described embodiment is only of the invention
A part of the embodiment, instead of all the embodiments.
Brief description is as follows.
Fig. 1 is the sectional view of example perfusion cannula.
Fig. 2 is the profilograph of example perfusion cannula working condition shown in Fig. 1.
Fig. 3 is the cross-sectional view of example perfusion cannula working condition shown in Fig. 1.
Specific implementation mode
This disclosure relates to a kind of accessory of the surgical instrument used in surgical operation.In particular, this disclosure relates to one
The perfusion cannula of ultrasonic emulsification instrument handle front end connection used in kind phacoemulsification.
Fig. 1 shows example perfusion cannula 100.Perfusion cannula 100 includes front 103, middle part 102 and rear portion 101.Front
103 is relatively thin, and inner surface has spiral groove 111 side by side.The rear inner surface has coupled structure 108.100 axis of perfusion cannula
Line is linear or arc.103 diameter of front is thinner, and the diameter of the front end 104 of front 103 further reduces, and forms diameter
Smaller front opening 105, there are one the sides of front end 104 or multiple casing side openings 107.Middle part 102 is located at front 103 with after
Between portion 101.Middle part 102 has the diameter of section of transformation, and one or more part can have tapered cross-section.Rear portion 101 is cut
Face is relatively large in diameter, and inner surface has coupled structure 108, can be received on ultrasonic emulsification handle（It is not shown）.Front 103
The inner surface of portion segment have multiple spiral grooves 111 side by side.The tangential direction of groove 111 and perfusion cannula axis
Angle between 0 ° and 90 °.In some cases, the cross sectional shape of groove 111 is in inverted trapezoidal.In other situations, recessed
The cross section profile of one or more parts of slot 111 be in other useful shapes, such as semicircle, triangle, " u "-shaped, " ︺ " shape,
Double-paraboloid is linear etc., but not limited to this locate the shape.The edge of groove 111 forms edge ridge 106.In some cases,
The cross sectional shape of edge ridge 106 is trapezoidal.In other situations, the cross section profile of one or more parts of edge ridge 106 is in
Other useful shapes, such as semicircle, triangle, " u "-shaped, " ︺ " shape, double-paraboloid are linear etc., but not limited to this locate the shape
Shape.In some embodiments, edge ridge 106 there are one or multiple breakpoints 114 so that adjacent grooves 111 being capable of intercommunication.
The case where Fig. 2 and Fig. 3 show front 103 in the operating condition.Front 103 passes through cornea tissue 110 into pleasing to the eye
It is interior.Super newborn syringe needle 109 runs through front 103, and is stretched out from front opening 105.The tube wall 113 of front end 103 is by 110 institute of cornea tissue
It squeezes, and certain deformation occurs, the portion segment of edge ridge 106 is in contact with super newborn syringe needle 109, other portions of tube wall 113
Divide and forms perfusion gap 112 between super newborn syringe needle 109.Perfusion liquid can flow into eye by groove 111 and perfusion gap 112
It is interior.Super newborn syringe needle 109 high-frequency vibration under the driving of ultrasonic wave, smashes the lens tissue being in contact with it（It is not shown）, super newborn
The lens tissue of crushing and intraocular liquid are sucked out by the needle lumen 115 of super newborn syringe needle 109 for the vacuum suction effect of handle.
The high-frequency vibration of super newborn syringe needle 109 can be such that the temperature of its own increases rapidly, and still, perfusion liquid is empty by groove 111 and perfusion
During gap 112 flows into intraocular, the heat of super newborn syringe needle 109 is absorbed, effective cooling effect is played.On the other hand, by
In the resilient support and cushioning effect of edge ridge 106, the tube wall 113 of front 103 and the contact area of super newborn syringe needle 109 obviously subtract
It is few, reduce the heat transfer between super newborn syringe needle 109 and tube wall 113, in turn, alleviates the thermal damage to cornea tissue 110.Together
When, for the high-frequency mechanical vibration of super newborn syringe needle 109, edge ridge 106 can be played slow well by the elastic deformation of itself
Punching acts on, hence it is evident that reduces the mechanical vibrational energy for being transferred to cornea tissue 110, reduces the mechanical oscillation damage of cornea tissue.
The scope of the present disclosure is not intended to limit or is defined in implementation content described herein and details.Moreover, this public affairs
It is opened in its broader aspect, is not limited to specific detail, and the illustrative example described herein.Those skilled in the art hold
Readily apparent additional advantage and modification.It therefore, can be without departing from the general design of applicant or the spirit or scope of inventive concept
In the case of, make deviation from these details.Therefore, other to implement to be in this paper the scope of the claims.
Claims (6)
1. a kind of heat-insulating and shock-absorbing perfusion cannula, including：Front；Middle part；The rear portion and.
2. perfusion cannula according to claim 1, wherein the inner surface of the front has spiral groove side by side.
3. front according to claim 2, point diameter are gradually reduced.
4. front according to claim 2, the front opening that front end has diameter smaller.
5. perfusion cannula according to claim 1, wherein the rear inner surface has coupled structure.
6. perfusion cannula according to claim 1, wherein the middle part is connected between front and rear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810873885.4A CN108703836A (en) | 2018-08-02 | 2018-08-02 | Heat-insulating and shock-absorbing perfusion cannula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810873885.4A CN108703836A (en) | 2018-08-02 | 2018-08-02 | Heat-insulating and shock-absorbing perfusion cannula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108703836A true CN108703836A (en) | 2018-10-26 |
Family
ID=63875489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810873885.4A Pending CN108703836A (en) | 2018-08-02 | 2018-08-02 | Heat-insulating and shock-absorbing perfusion cannula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108703836A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5354265A (en) * | 1992-12-30 | 1994-10-11 | Mackool Richard J | Fluid infusion sleeve |
| US5505693A (en) * | 1994-12-30 | 1996-04-09 | Mackool; Richard J. | Method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery |
| JPH1071166A (en) * | 1996-08-30 | 1998-03-17 | Nidek Co Ltd | Ultrasonic operation device |
| US5941887A (en) * | 1996-09-03 | 1999-08-24 | Bausch & Lomb Surgical, Inc. | Sleeve for a surgical instrument |
| CN101083963A (en) * | 2004-12-20 | 2007-12-05 | 博士伦公司 | Non-circular ported phacoemulsification irrigation sleeve |
| US20100056991A1 (en) * | 2008-09-04 | 2010-03-04 | Dimalanta Jr Ramon Carsola | Multi-compliant tubing |
| WO2010064670A1 (en) * | 2008-12-05 | 2010-06-10 | Hoya株式会社 | Ophthalmic operation instrument |
| CN102256574A (en) * | 2008-12-22 | 2011-11-23 | 博士伦公司 | Variable frequency phacoemulsification handpiece |
| CN203417286U (en) * | 2013-08-22 | 2014-02-05 | 宁波艾克伦医疗科技有限公司 | Ultrasonic emulsification cannula |
| US20150038894A1 (en) * | 2013-08-02 | 2015-02-05 | Alex Urich | Occlusion-activated heat supression infusion sleeve |
| CN106175848A (en) * | 2016-08-31 | 2016-12-07 | 南京市鼓楼医院 | A kind of ultrasonic emulsification head based on solid needle and ultrasonic emulsification equipment |
| WO2018135825A1 (en) * | 2017-01-23 | 2018-07-26 | 울산대학교 산학협력단 | Phacoemulsification irrigation sleeve |
| CN209770652U (en) * | 2018-08-02 | 2019-12-13 | 王素常 | Heat-insulation shock-absorption filling casing pipe |
-
2018
- 2018-08-02 CN CN201810873885.4A patent/CN108703836A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5354265A (en) * | 1992-12-30 | 1994-10-11 | Mackool Richard J | Fluid infusion sleeve |
| US5505693A (en) * | 1994-12-30 | 1996-04-09 | Mackool; Richard J. | Method and apparatus for reducing friction and heat generation by an ultrasonic device during surgery |
| JPH1071166A (en) * | 1996-08-30 | 1998-03-17 | Nidek Co Ltd | Ultrasonic operation device |
| US5941887A (en) * | 1996-09-03 | 1999-08-24 | Bausch & Lomb Surgical, Inc. | Sleeve for a surgical instrument |
| CN101083963A (en) * | 2004-12-20 | 2007-12-05 | 博士伦公司 | Non-circular ported phacoemulsification irrigation sleeve |
| US20100056991A1 (en) * | 2008-09-04 | 2010-03-04 | Dimalanta Jr Ramon Carsola | Multi-compliant tubing |
| WO2010064670A1 (en) * | 2008-12-05 | 2010-06-10 | Hoya株式会社 | Ophthalmic operation instrument |
| CN102256574A (en) * | 2008-12-22 | 2011-11-23 | 博士伦公司 | Variable frequency phacoemulsification handpiece |
| US20150038894A1 (en) * | 2013-08-02 | 2015-02-05 | Alex Urich | Occlusion-activated heat supression infusion sleeve |
| CN203417286U (en) * | 2013-08-22 | 2014-02-05 | 宁波艾克伦医疗科技有限公司 | Ultrasonic emulsification cannula |
| CN106175848A (en) * | 2016-08-31 | 2016-12-07 | 南京市鼓楼医院 | A kind of ultrasonic emulsification head based on solid needle and ultrasonic emulsification equipment |
| WO2018135825A1 (en) * | 2017-01-23 | 2018-07-26 | 울산대학교 산학협력단 | Phacoemulsification irrigation sleeve |
| CN209770652U (en) * | 2018-08-02 | 2019-12-13 | 王素常 | Heat-insulation shock-absorption filling casing pipe |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181026 |
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| WD01 | Invention patent application deemed withdrawn after publication |