CN112998821A - Self-closing ophthalmic puncture cannula cap - Google Patents
Self-closing ophthalmic puncture cannula cap Download PDFInfo
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- CN112998821A CN112998821A CN202110275936.5A CN202110275936A CN112998821A CN 112998821 A CN112998821 A CN 112998821A CN 202110275936 A CN202110275936 A CN 202110275936A CN 112998821 A CN112998821 A CN 112998821A
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- self
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- puncture cannula
- closing valve
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3462—Trocars; Puncturing needles with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3454—Details of tips
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- Heart & Thoracic Surgery (AREA)
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Abstract
The invention discloses a self-closing ophthalmic puncture cannula cap, which adopts the technical scheme that: the puncture needle comprises a tube cap main body used for being matched with a puncture cannula end, wherein an end containing cavity is arranged inside the tube cap main body, one end of the end containing cavity is communicated with a self-closing valve cavity provided with a planar self-closing valve, and the other end of the end containing cavity is communicated with a shrinkage opening. The self-closing self-luminous puncture cannula has the self-closing and self-luminous functions, after the puncture cannula is drawn out by a surgical instrument, the upper port of the puncture cannula can be automatically closed, the liquid in an eyeball is prevented from flowing out, the intraocular pressure is prevented from being reduced, the complicated operation of blocking the port of the puncture cannula by a plug is not needed, and the operation time is saved.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a self-closing ophthalmic puncture cannula cap.
Background
The eyes are the most important sensory organs of human beings, the structure is extremely precise, more than 90% of information of human bodies is obtained through the eyes, a lot of blinding eye diseases occurring in eyeballs seriously threaten the health of the human bodies, and vitreoretinal diseases such as severe proliferative diabetic retinopathy, retinal detachment, complex eye trauma and the like are the disease types which are most complicated to treat and have high incidence. One non-retinal operation such as cataract operation is generally 5-10 minutes, most vitreoretinal operations are more than 1 hour, and operators do a plurality of operations continuously under many conditions and need to be consciously finished under a microscope in a dark environment, so that the operation is simplified, and the improvement of the visualization of the operation in the dark environment has important significance for improving the operation efficiency and the operation quality and the precision operation skill.
Vitreoretinal surgery generally requires the insertion of a cannula through the wall of the eye to create an access passage for surgical instruments. The ophthalmology puncture system composed of a puncture needle and a puncture sleeve is used for puncturing on sclera, then the puncture needle is drawn out, and the puncture sleeve is arranged on the wall of an eyeball to provide a channel for surgical instruments to enter the interior of the eyeball. Two problems exist in surgery that increase the complexity of the surgical procedure and the surgical time:
1) such procedures often require complex and delicate procedures, often requiring multiple exchanges of different surgical instruments through the puncture cannula into the eye and multiple accesses of the same instrument to accomplish the desired surgical procedure. When the puncture cannula is drawn out for replacement or other operations, a matched plug is needed to plug the upper port of the puncture cannula so as to maintain intraocular pressure, prevent intraocular perfusate from flowing out too much along the cannula to cause sudden reduction of intraocular pressure, and increase operation risks, particularly explosive choroidal hemorrhage which is the most serious complication of ophthalmic operation. The caliber of the puncture cannula is only a few tenths of millimeters, the matched plug is very small, the operation of the plug needs to be careful and careful, and the plug can slide to a polluted area in the field of operation due to carelessness, so that the plug cannot be normally used, and the operation complexity and the operation time in the operation process are increased.
2) In order to ensure clear observation of the operation position in the eyeball, the environmental illumination and the operation microscope lamp need to be turned off in the operation, and only the optical fiber illumination in the eyeball is reserved. However, when the instrument is replaced, the microscope lamp needs to be turned on to determine the position of the port on the puncture cannula, and after the instrument is replaced, the microscope lamp is turned off to continue the operation, and the operation is repeated. This process adds complexity to the operation, and therefore the change in illumination light intensity is large in the process, and the operator needs a certain time to adapt to the change in light intensity, also increasing the operation time.
The inventors have discovered that the prior art discloses a self-illuminating microsurgical intubation device that includes a cannula and a hub, the hub being located at a proximal end of the cannula, a sealing element being coupled to the hub; the cannula may be manufactured separately from the hub and then attached to the hub, but a permanent holding structure is ultimately formed between the hub and the cannula, i.e., a non-removable structure after both are installed. It can be seen that the bushing is not replaceable in the event of contamination or breakage, but only in the event of replacement of another intubation device, and the bushing cannot be reused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a self-closing ophthalmologic puncture cannula cap which has the self-closing and self-luminous functions, after a surgical instrument is drawn out of the puncture cannula, the upper port of the puncture cannula can be automatically closed, the liquid in an eyeball is prevented from flowing out, the intraocular pressure is prevented from being reduced, the complicated operation of blocking the port of the puncture cannula by a plug is not needed, and the operation time is saved.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, embodiments of the present invention provide a self-closing ophthalmic puncture cannula cap, which includes a main body of the cannula cap for fitting a tip of a puncture cannula, wherein the main body of the cannula cap has a tip accommodating cavity therein, one end of the tip accommodating cavity is communicated with a self-closing valve cavity provided with a planar self-closing valve, and the other end of the tip accommodating cavity is communicated with a retraction opening.
In a second aspect, an embodiment of the present invention further provides a self-closing ophthalmic puncture cannula cap, including a main body of the cannula cap for matching with a tip of the puncture cannula, the main body of the cannula cap having a tip accommodating cavity therein, one end of the tip accommodating cavity being communicated with a self-closing valve cavity provided with an inward concave self-closing valve, and the other end of the tip accommodating cavity being communicated with a constriction opening.
As a further implementation, the cap body is made of an elastomeric material.
As a further realization mode, the plane-shaped self-closing valve is composed of two plane valves which are symmetrical to each other, and a linear opening is formed between the two plane valves.
As a further implementation mode, the concave self-closing valve is composed of a spherical valve, and the spherical valve is provided with an arc-shaped opening.
As a further realisation, the internally concave self-closing valve is constituted by a conical valve provided with a V-shaped opening.
As a further implementation mode, the inward concave self-closing valve is formed by a wedge-shaped valve, and openings are formed in the edges of the wedge-shaped valve.
As a further implementation mode, the pipe cap body is made of a light-transmitting material, and a light-storing self-luminous pigment is added into the pipe cap body.
As a further implementation, the cap body has a self-luminous body embedded therein.
As a further implementation mode, the middle of the pipe cap body is provided with a clamping groove, and two sides of the pipe cap body are provided with positioning platforms.
The beneficial effects of the above-mentioned embodiment of the present invention are as follows:
(1) the puncture cannula cap of one or more embodiments of the invention can be applied to the existing puncture cannula, and has strong universality; the puncture cannula cap and the puncture cannula are convenient to detach and replace, and the utilization rate of the puncture cannula is improved.
(2) According to one or more embodiments of the invention, different forms of self-closing valves are arranged, after the puncture cannula is drawn out by a surgical instrument, the upper port of the puncture cannula can be automatically closed, the liquid in the eyeball is prevented from flowing out, the intraocular pressure is prevented from being reduced, the complicated operation of blocking the port of the puncture cannula by a plug is not needed, and the operation time is saved.
(3) The pipe cap main body of one or more embodiments of the invention is made of an elastomer material, and can meet the following requirements: 1) the self-closing valve must have elasticity; 2) the whole sleeve cap is made of a single material, so that assembly is avoided; 3) when the puncture cannula is combined with the puncture cannula, the elastic deformation of the cannula cap is needed.
(4) One or more embodiments of the invention can enable the upper port of the ophthalmologic puncture cannula to have the self-closing and self-luminous functions on the basis of not changing the structure of the prior ophthalmologic puncture cannula, and can conveniently position the upper port of the puncture cannula in a dark environment when surgical instruments are replaced in an operation without opening a microscope lamp.
(5) The puncture cannula cap of one or more embodiments of the invention is used in combination with a complete puncture cannula, and compared with the puncture cannula body, the puncture cannula has a much larger diameter at the end, and the size of the constricted opening is matched with the cannula body to fully wrap the end of the cannula, and the end of the cannula is matched with a manufacturing material with excellent elasticity and is not easy to fall off.
(6) The material required by manufacturing one or more embodiments of the invention is easy to obtain, low in manufacturing difficulty and manufacturing cost and easy to realize.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic view of a puncture cannula cap configuration with a planar self-closing valve according to one or more embodiments of the present invention;
FIGS. 2 and 3 are cross-sectional views of a puncture cannula cap with a planar self-closing valve according to one or more embodiments of the present invention;
FIG. 4 is a top view of a puncture cannula cap with a planar self-closing valve according to one or more embodiments of the present invention;
FIG. 5 is a schematic view of a puncture cannula cap configuration with a spherical valve self-closing valve in accordance with one or more embodiments of the present invention;
FIGS. 6 and 7 are cross-sectional views of a puncture cannula cap with a spherical valve self-closing valve in accordance with one or more embodiments of the present invention;
FIG. 8 is a schematic representation of a puncture cannula cap with a tapered valve self-closing valve according to one or more embodiments of the present invention;
FIGS. 9 and 10 are cross-sectional views of a puncture cannula cap with a tapered valve self-closing valve according to one or more embodiments of the present invention;
FIG. 11 is a schematic illustration of a puncture cannula cap configuration with a wedge-faced valve self-closing valve in accordance with one or more embodiments of the present invention;
FIGS. 12 and 13 are cross-sectional views of a puncture cannula cap with a wedge-faced valve self-closing valve in accordance with one or more embodiments of the present invention;
FIGS. 14 and 15 are cross-sectional views of a puncture cannula cap embedded with self-luminescent material in accordance with one or more embodiments of the present invention;
FIG. 16 is a schematic view of a prior art ophthalmic piercing cannula construction;
the self-closing type self-luminous pipe cap comprises a pipe cap body 1, a self-closing valve 2, a positioning platform 3, a clamping groove 4, a self-closing valve cavity 5, an end head accommodating cavity 6, a head accommodating cavity 7, a tightening ring 8, a tightening opening 9, a spherical valve 10, a conical valve 11, a wedge-shaped valve 12 and a self-luminous body.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting in this application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected directly or indirectly through an intermediate medium, or the two components can be connected internally or in an interaction relationship, and the terms can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows:
the embodiment provides a self-closing self-luminous ophthalmic puncture cannula cap, which comprises a cannula cap body 1, as shown in fig. 1-4, wherein the cannula cap body 1 can be sleeved outside the end head of a puncture cannula as shown in fig. 16; the pipe cap main body 1 is internally provided with an end containing cavity 6, one end of the end containing cavity 6 is provided with a self-closing valve cavity 5, a self-closing valve 2 is installed in the self-closing valve cavity 5, and the other end of the self-closing valve cavity is provided with a shrinkage opening 8.
Further, the pipe cap main body 1 is made of an elastomer material, and can meet the following requirements: 1) the self-closing valve must have elasticity; 2) the whole sleeve cap is made of a single material, so that assembly is avoided; 3) when the puncture cannula is combined with the puncture cannula, the elastic deformation of the cannula cap is needed. For example, the cap body 1 is made of a material having excellent elasticity such as TPE (thermoplastic elastomer), TPU (thermoplastic polyurethane elastomer) or the like.
The shape of the end head accommodating cavity 6 is matched with that of the end head of the puncture cannula, specifically, the longitudinal section of the end head accommodating cavity 6 is of an I-shaped structure, and a shrink ring 7 is formed in the middle of the end head accommodating cavity 6; the boundary of the shrink ring 7 is an arc structure which is sunken towards the inner side of the end containing cavity 6 so as to adapt to the groove structure in the middle of the end of the puncture cannula and enable the puncture cannula and the end to be tightly attached.
Further, the self-closing valve cavity 5 is a cavity communicated with the end head accommodating cavity 6, in this embodiment, the self-closing valve cavity 5 is a cylindrical cavity as a whole, and the inner diameter of the self-closing valve cavity 5 is smaller than the inner diameter of the end part of the end head accommodating cavity 6. The self-closing valve 2 is composed of two plane valves, the plane valves are in a semicircular structure, the arc boundaries of the plane valves are fixed with the inner wall of the self-closing valve cavity 5, and a linear opening structure is formed between the two plane valves. The surgical instrument enters the puncture cannula connected with the tube cap main body 1 through the self-closing valve 2.
In this embodiment, the tightening opening 8 is communicated with the tip accommodating chamber 6, and is a cylindrical structure with a diameter smaller than the inner diameter of the end portion of the tip accommodating chamber 6. The diameter of the contraction opening 8 is adapted to the pipe diameter of the puncture cannula, and the pipe cap body 1 is made of elastic materials, so that the contraction opening 8 can be tightly attached to the pipe section of the puncture cannula.
The puncture cannula cap of this embodiment combines to use with complete puncture cannula, and for the puncture cannula body, the diameter of puncture cannula end will be greatly big, and the size and the cannula body cooperation of constriction opening 8 carry out abundant parcel to the cannula end, cooperate the good preparation material of elasticity, are difficult for droing.
Furthermore, the shape of the pipe cap main body 1 is matched with the end head of the puncture cannula, a clamping groove 4 is arranged at the middle position of the pipe cap main body, and the clamping groove 4 forms an annular structure so as to be convenient for clamping and mounting; the two sides of the pipe cap body 1 are bosses protruding out of the clamping groove 4, and two sides of one boss are symmetrically provided with the positioning platforms 3.
The positioning platform 3 is a table top which is longitudinally arranged, the direction of the positioning platform is consistent with that of the self-closing valve 2, and the positioning platform is used for positioning the direction of the self-closing valve 2 when being connected with the puncture cannula.
In order to conveniently position the upper port of the puncture cannula in a dark environment when a surgical instrument is replaced during surgery, the cap body 1 of the present embodiment is configured to have a self-luminous function. In the present embodiment, the cap body 1 is made of a light-transmitting material, and the self-luminous performance is obtained by adding a light-storing self-luminous pigment to the material of the cap body 1.
Alternatively, as shown in fig. 14 and 15, the cap body 1 is made of a light-transmitting material, and a self-luminous body 12 is embedded inside the cap body 1, and in the present embodiment, the self-luminous body 12 is a ring-shaped structure made of a self-luminous material.
The appearance color and the self-luminous color of the tube cap main body 1 are consistent with the identification color corresponding to the size code of the ophthalmic puncture cannula matched with the tube cap main body.
Before puncturing, the puncturing cannula cap of the embodiment is sleeved on the upper end head of the puncturing cannula through the lower end tightening opening 8, and after the tightening opening 8 is elastically reset, the puncturing cannula cap can firmly sleeve the upper end head of the puncturing cannula. The puncture needle passes through the puncture cannula cap and the puncture cannula through the straight-line-shaped opening self-closing valve 2 of the puncture cannula cap.
After the puncture is finished, the puncture needle is pulled out of the sleeve, the valves on the two sides of the self-closing valve 2 are elastically reset, the upper port of the puncture sleeve is closed, and the liquid in the eyeball is prevented from flowing out. When the surgical instrument enters the puncture cannula through the self-closing valve 2, the valves at the two sides of the self-closing valve 2 elastically retreat to ensure that the surgical instrument smoothly enters the eyeball, and after the surgical instrument is drawn out of the puncture cannula, the valves at the two sides of the self-closing valve elastically reset again to seal the upper port of the puncture cannula and prevent the liquid in the eyeball from flowing out.
The planar valve linear self-closing valve of the embodiment has simple shape, and the self-closing property of the planar valve linear self-closing valve is completely realized by the elasticity of materials; the puncture cannula cap contains light-storing self-luminous pigment, can continuously emit light for ten hours in the dark after being irradiated by proper exciting light before an operation, and can observe the self-luminous puncture cannula port without opening a microscope lamp when surgical instruments need to be replaced in the operation, thereby smoothly completing the replacement of the surgical instruments.
Example two:
the embodiment provides a self-closing self-luminous ophthalmic puncture cannula cap, as shown in fig. 5-7, comprising a cannula cap body 1, wherein the cannula cap body 1 can be sleeved outside the end head of a puncture cannula as shown in fig. 16; the pipe cap main body 1 is internally provided with an end containing cavity 6, one end of the end containing cavity 6 is provided with a self-closing valve cavity 5, a self-closing valve 2 is installed in the self-closing valve cavity 5, and the other end of the self-closing valve cavity is provided with a shrinkage opening 8.
The difference between the present embodiment and the first embodiment is that the self-closing valve 2 has a different structure, and in the present embodiment, the self-closing valve 2 has a concave spherical structure.
Further, the self-closing valve 2 is composed of a spherical valve 9, the spherical valve 9 is composed of two symmetrical parts to form an inwards concave hemispherical structure, and an arc-shaped opening is formed between the spherical valves 9. Because the self-closing valve 2 is of a concave structure, the self-closing valve can be closed more tightly under the action of the liquid pressure in the eyeball.
Example three:
the embodiment provides a self-closing self-luminous ophthalmic puncture cannula cap, as shown in fig. 8-10, comprising a cannula cap body 1, wherein the cannula cap body 1 can be sleeved outside the end head of a puncture cannula as shown in fig. 16; the pipe cap main body 1 is internally provided with an end containing cavity 6, one end of the end containing cavity 6 is provided with a self-closing valve cavity 5, a self-closing valve 2 is installed in the self-closing valve cavity 5, and the other end of the self-closing valve cavity is provided with a shrinkage opening 8.
The difference between the present embodiment and the first embodiment is that the self-closing valve 2 has a different structure, and in the present embodiment, the self-closing valve 2 has a concave conical surface structure.
Further, the self-closing valve 2 is composed of a conical valve 10, the conical valve 10 is composed of two symmetrical parts to form an inwards concave conical structure, and a V-shaped gap is formed between the conical valves 10. Because the self-closing valve 2 is of a concave structure, the self-closing valve can be closed more tightly under the action of the liquid pressure in the eyeball.
Example four:
the embodiment provides a self-closing self-luminous ophthalmic puncture cannula cap, as shown in fig. 11-13, comprising a cannula cap body 1, wherein the cannula cap body 1 can be sleeved outside the end head of a puncture cannula as shown in fig. 16; the pipe cap main body 1 is internally provided with an end containing cavity 6, one end of the end containing cavity 6 is provided with a self-closing valve cavity 5, a self-closing valve 2 is installed in the self-closing valve cavity 5, and the other end of the self-closing valve cavity is provided with a shrinkage opening 8.
The difference between the present embodiment and the first embodiment is that the self-closing valve 2 has a different structure, and in the present embodiment, the self-closing valve 2 has a concave wedge-shaped surface structure.
Furthermore, the self-closing valve 2 is composed of a wedge-shaped valve 11, and the gap of the self-closing valve 2 is opened on the edge of the wedge-shaped surface. The self-closing valve 2 is of a concave structure, so that the self-closing valve can be closed more tightly under the action of liquid pressure in the eyeball; and the opening (gap) of the wedge-shaped surface valve can also avoid the possibility of valve eversion caused by the extraction of a surgical instrument from the sleeve.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a self-closing ophthalmology puncture cannula cap which characterized in that, including the tube cap main part that is used for cooperating the puncture cannula end, tube cap main part inside has the end and holds the chamber, and the end holds chamber one end and installs the self-closing valve chamber intercommunication of plane shape self-closing valve, and the end holds the chamber other end and contracts the opening and communicate.
2. The utility model provides a self-closing ophthalmology puncture cannula cap which characterized in that, including the tube cap main part that is used for cooperating the puncture cannula end, the tube cap main part is inside to have the end and to hold the chamber, and the end holds chamber one end and installs the self-closing valve chamber intercommunication of interior concave shape self-closing valve, and the end holds the chamber other end and contracts the opening and communicates.
3. A self-closing ophthalmic piercing cannula cap as claimed in claim 1 or 2 wherein said cap body is made of an elastomeric material.
4. A self-closing ophthalmic puncture cannula cap according to claim 1, wherein the planar self-closing valve is composed of two mutually symmetrical planar valves, between which a straight opening is formed.
5. A self-closing ophthalmic piercing cannula cap as claimed in claim 2 wherein said female self-closing valve is comprised of a spherical valve with a curved opening.
6. A self-closing ophthalmic piercing cannula cap as claimed in claim 2 wherein said female self-closing valve is comprised of a tapered valve having a V-shaped opening.
7. A self-closing ophthalmic puncture cannula cap according to claim 2, wherein the concave self-closing valve is formed by a wedge-shaped valve, the edges of which are provided with openings.
8. A self-closing ophthalmic piercing cannula cap as claimed in claim 1 or 2 wherein the body of the cannula cap is made of a light transparent material with the addition of a light storing self-luminescent pigment.
9. A self-closing ophthalmic piercing cannula cap as claimed in claim 1 or 2 wherein the body of the cannula cap is internally embedded with self-luminescent material.
10. A self-closing ophthalmic piercing cannula cap as claimed in claim 1 or 2 wherein the cap body has a holding groove in the middle and positioning platforms on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110275936.5A CN112998821A (en) | 2021-03-15 | 2021-03-15 | Self-closing ophthalmic puncture cannula cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110275936.5A CN112998821A (en) | 2021-03-15 | 2021-03-15 | Self-closing ophthalmic puncture cannula cap |
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|---|---|
| CN112998821A true CN112998821A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110275936.5A Pending CN112998821A (en) | 2021-03-15 | 2021-03-15 | Self-closing ophthalmic puncture cannula cap |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3993068A (en) * | 1974-07-13 | 1976-11-23 | Transcodan Sven Husted-Andersen | Piercing cannula of infusion and transfusion instruments |
| US5312362A (en) * | 1993-02-04 | 1994-05-17 | Owens Precision Systems, Inc. | Seal for a cannula assembly |
| US5727770A (en) * | 1997-02-07 | 1998-03-17 | Core Dynamics, Inc. | Double valve cannula seal |
| US20060089526A1 (en) * | 2004-10-21 | 2006-04-27 | Medical Instrument Development Laboratories, Inc. | Self-sealing closure for an ophthalmic cannula |
| US20080215078A1 (en) * | 2007-01-31 | 2008-09-04 | Bennett Michael D | Surgical blade and trocar system |
| US7846134B1 (en) * | 2006-06-23 | 2010-12-07 | Timothy Nadolski | Flexible walled cannula |
| CN102499737A (en) * | 2011-11-01 | 2012-06-20 | 东莞微视医疗科技有限公司 | Manufacturing method of visual puncture outfit for disposable laparoscope and puncture outfit implementing same |
| CN102665580A (en) * | 2009-12-23 | 2012-09-12 | 爱尔康研究有限公司 | Ophthalmic valved trocar cannula |
| US20190239979A1 (en) * | 2018-02-05 | 2019-08-08 | Novartis Ag | Illuminated cannula |
-
2021
- 2021-03-15 CN CN202110275936.5A patent/CN112998821A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3993068A (en) * | 1974-07-13 | 1976-11-23 | Transcodan Sven Husted-Andersen | Piercing cannula of infusion and transfusion instruments |
| US5312362A (en) * | 1993-02-04 | 1994-05-17 | Owens Precision Systems, Inc. | Seal for a cannula assembly |
| US5727770A (en) * | 1997-02-07 | 1998-03-17 | Core Dynamics, Inc. | Double valve cannula seal |
| US20060089526A1 (en) * | 2004-10-21 | 2006-04-27 | Medical Instrument Development Laboratories, Inc. | Self-sealing closure for an ophthalmic cannula |
| US7846134B1 (en) * | 2006-06-23 | 2010-12-07 | Timothy Nadolski | Flexible walled cannula |
| US20080215078A1 (en) * | 2007-01-31 | 2008-09-04 | Bennett Michael D | Surgical blade and trocar system |
| CN102665580A (en) * | 2009-12-23 | 2012-09-12 | 爱尔康研究有限公司 | Ophthalmic valved trocar cannula |
| CN102499737A (en) * | 2011-11-01 | 2012-06-20 | 东莞微视医疗科技有限公司 | Manufacturing method of visual puncture outfit for disposable laparoscope and puncture outfit implementing same |
| US20190239979A1 (en) * | 2018-02-05 | 2019-08-08 | Novartis Ag | Illuminated cannula |
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