CN219557779U - Ophthalmic syringe needle and syringe with same - Google Patents
Ophthalmic syringe needle and syringe with same Download PDFInfo
- Publication number
- CN219557779U CN219557779U CN202223528529.XU CN202223528529U CN219557779U CN 219557779 U CN219557779 U CN 219557779U CN 202223528529 U CN202223528529 U CN 202223528529U CN 219557779 U CN219557779 U CN 219557779U
- Authority
- CN
- China
- Prior art keywords
- needle
- channel
- segment
- angle
- section
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides an ophthalmic injection needle and an injector with the same, the ophthalmic injection needle comprises: a needle stand; the needle comprises a needle seat, and is characterized in that the needle seat is arranged on the needle seat, a channel is defined in the needle seat, a liquid inlet communicated with the channel is formed in the first end of the needle seat, a liquid outlet communicated with the channel is formed in the needle seat, the liquid outlet is close to the second end of the needle seat, the second end of the needle seat is conical, and the angle of the top angle of the second end of the needle seat is a right angle or an obtuse angle. The ophthalmic injection needle provided by the embodiment of the utility model can realize a micro incision and improve injection safety by adopting the design of the side opening and the micro blunt needle.
Description
Technical Field
The utility model relates to the technical field of syringes, in particular to an ophthalmic injection needle and a syringe with the ophthalmic injection needle.
Background
The method is to inject anesthetic into the muscle cone after the 1/3 of the lower eyelid is injected into the eyeball by using a sharp retrobulbar injection needle through skin. However, common complications include post-globus hemorrhage, puncture of the eye wall, toxic side effects of the heart and brain caused by the entry of anesthetic into the blood circulation, and unsatisfactory anesthetic effect caused by the failure to enter the muscle cone accurately.
When a doctor uses a sharp retrobulbar needle for anesthesia injection, blood vessels are easily pierced, resulting in retrobulbar bleeding, and blood is injected into the blood vessels due to the blood entering the blood vessels. For the two complications, only a back-drawing method can be adopted to observe whether blood return exists or not. However, the blood vessel is thin, and no blood return is caused, so that the gunpowder does not enter blood. Although the cotton swab pushing method is adopted to avoid the penetration of the eyeball wall, the judgment is unreliable only by hand feeling and experience. Therefore, the prior solutions still present the risk of unavoidable occurrence of the above complications.
Disclosure of Invention
The utility model aims to provide a novel technical scheme of an ophthalmic injection needle, which can solve the problem that the injection needle is easy to puncture a blood vessel in the ophthalmic operation in the prior art.
It is a further object of the present utility model to provide a new solution for a syringe.
According to an object of the present utility model, there is provided an ophthalmic injection needle comprising: a needle stand; the needle comprises a needle seat, and is characterized in that the needle seat is arranged on the needle seat, a channel is defined in the needle seat, a liquid inlet communicated with the channel is formed in the first end of the needle seat, a liquid outlet communicated with the channel is formed in the needle seat, the liquid outlet is close to the second end of the needle seat, the second end of the needle seat is conical, and the angle of the top angle of the second end of the needle seat is a right angle or an obtuse angle.
Optionally, the second end of the needle tube has a triangular cross section along the axial direction of the channel, and the outer side of the cross section comprises a first straight side and a second straight side which are in butt joint and are symmetrically arranged.
Optionally, an included angle between the first straight edge and the second straight edge is 90-140 degrees.
Optionally, the channel includes a first channel and a second channel, and the needle cannula includes: the first end of the first section body is provided with the liquid inlet, and the first section body is provided with the first channel; the second section body is provided with the second channel, the first end of the second section body is communicated with the second end of the first section body, and the second end of the second section body is provided with the liquid outlet; the first section body is a straight piece, the second section body is an arc piece, and the first section body and the second section body are in arc transition.
Optionally, the second segment body is an arc segment, and an included angle between a connecting line between one end of the second segment body and the other end of the second segment body and the first segment body is 110-170 degrees.
Optionally, the length of the second section body is 3 mm-12 mm, and the length of the first section body is 10 mm-40 mm.
Optionally, the maximum distance between the center position of the liquid outlet and the second end of the needle tube is 0.3 mm-1.0 mm.
Optionally, the number of the liquid outlets is two, and the two liquid outlets are respectively arranged at two radial ends of the needle tube.
Optionally, the cross section of the liquid outlet is round, triangular or T-shaped.
Optionally, the inner diameter of the channel is 0.6mm, 0.33mm, 0.26mm, 0.19mm, 0.2mm or 0.13mm, and the inner diameter of the channel is consistent with the diameter of the liquid outlet.
According to a further object of the present utility model there is provided a syringe comprising an ophthalmic injection needle as defined in any one of the above.
The ophthalmic injection needle mainly comprises the needle seat and the needle tube, adopts the design of the side opening and the micro blunt needle, not only can realize micro incision, but also can improve injection safety.
Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.
FIG. 1 is a schematic view of an angle configuration of an ophthalmic injection needle according to one embodiment of the present utility model;
FIG. 2 is an angled interior perspective view of the tip of a needle cannula according to one embodiment of the present utility model;
FIG. 3 is a schematic view of a further angular configuration of an ophthalmic injection needle according to one embodiment of the present utility model;
FIG. 4 is a further angled interior perspective view of the tip of a needle cannula according to one embodiment of the present utility model.
Reference numerals
An ophthalmic injection needle 100;
a needle holder 10;
a needle tube 20; a channel 21; a liquid outlet 22; a first straight edge 23; a second straight edge 24; a first segment 25; a second segment 26.
Detailed Description
Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
An ophthalmic injection needle 100 according to an embodiment of the present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, the ophthalmic injection needle 100 according to the embodiment of the present utility model includes a needle hub 10 and a needle tube 20.
Specifically, the needle tube 20 is arranged on the needle seat 10, a channel 21 is defined in the needle tube 20, a liquid inlet communicated with the channel 21 is formed in a first end of the needle tube 20, a liquid outlet 22 communicated with the channel 21 is formed in the needle tube 20, the liquid outlet 22 is close to a second end of the needle tube 20, the second end of the needle tube 20 is conical, and the angle of a vertex angle of the second end of the needle tube 20 is a right angle or an obtuse angle.
In other words, the ophthalmic injection needle 100 according to the embodiment of the present utility model is mainly composed of the needle hub 10 and the needle tube 20, the needle hub 10 is connected with the needle tube 20, the rear end of the needle tube 20 may be connected with the needle hub 10, the front end of the needle tube 20 is tapered in shape, and the tapered size gradually increases in a direction from the front end of the needle tube 20 toward the rear end of the needle tube 20. In addition, the angle of the vertex angle of the second end of the needle tube 20 is a right angle or an obtuse angle, that is, as shown in fig. 2, the shape of the cross section of the second end of the needle tube 20 along the axial direction of the channel 21 is a triangle, the outer side of the cross section comprises a first straight edge 23 and a second straight edge 24 which are in butt joint, and the included angle between the first straight edge 23 and the second straight edge 24 is a right angle or an obtuse angle, so that the tip micro blunt design of the needle tube 20 is realized. That is, the tip of the needle tube 20 is slightly blunt-ended and tapered, so that the insertion can be effectively guided, and the tip is prevented from being too sharp to easily penetrate into a blood vessel or an eyeball wall.
In addition, the needle tube 20 is provided with a liquid outlet 22, and the liquid outlet 22 is close to the second end of the needle tube 20, so that the liquid outlet 22 can be prevented from being directly arranged at the second end of the needle tube 20, and injection can be conveniently controlled. It should be noted that, the liquid outlet 22 adopts a side opening design, so that not only is the inclined angle avoided, but also the blood vessel and eyeball wall are prevented from being pierced; and a large incision is not required to be made to compensate for the injection insertion angle, so that the incision size can be reduced.
Thus, the ophthalmic injection needle 100 according to the embodiment of the present utility model is mainly composed of the hub 10 and the needle tube 20, and the design of the side opening and the micro blunt needle is adopted, so that not only a micro incision can be realized, but also injection safety can be improved. The ophthalmic injection needle 100 according to the embodiment of the present utility model can solve the problems of complications occurring in the case of post-balloon retardation anesthesia by percutaneous injection of a anesthetic which is currently commonly used in ophthalmology, including: the post-bulbar hemorrhage caused by the puncture of the blood vessel by the needle head causes the rise of the intra-orbital pressure, the penetration injury of the eyeball wall caused by the puncture of the eyeball wall, the cardio-cerebral toxic reaction caused by the blood infusion of anesthetic, unsatisfactory anesthetic effect caused by the failure of the needle head to enter the muscle cone, and the like.
According to one embodiment of the present utility model, as shown in fig. 2, the second end of the needle cannula 20 has a triangular cross-section along the axis of the passageway 21, and the outer side of the cross-section includes a first straight edge 23 and a second straight edge 24 that are butted and symmetrically disposed. In this embodiment, by adopting the tip of the needle tube 20 with a symmetrical design, the first straight edge 23 and the second straight edge 24 can be symmetrical with respect to the axial direction of the channel 21, which is convenient for processing design and easy to control the penetration of the needle tube 20 and fit the eyeball.
In some embodiments of the present utility model, as shown in fig. 2, the included angle θ1 between the first straight edge 23 and the second straight edge 24 is 90 ° to 140 °, inclusive. For example, the angle between the line between one end of the second segment 26 and the other end of the second segment 26 and the first segment 25 is 100 °, 118 °, 120 °, 130 °, or the like. It should be noted that, if the included angle between the first straight edge 23 and the second straight edge 24 is smaller than 90 °, the tip of the needle tube 20 is too sharp to be pricked into a blood vessel and the eyeball wall easily, and if the included angle between the first straight edge 23 and the second straight edge 24 is larger than 140 °, the tip of the needle tube 20 is easily made to extend into a large resistance.
According to one embodiment of the utility model, the channel 21 comprises a first channel and a second channel, the needle tube 20 comprises a first section 25 and a second section 26, the first end of the first section 25 is provided with a liquid inlet, the first section 25 is provided with the first channel, the second section 26 is provided with the second channel, the first end of the second section 26 is communicated with the second end of the first section 25, and the second end of the second section 26 is provided with a liquid outlet 22; the first segment 25 is a straight part, the second segment 26 is an arc part, and the first segment 25 and the second segment 26 are in arc transition.
It should be noted that, the needle tube 20 at the front end of the conventional needle in the prior art is straight, and if the needle is inserted deeply, a large incision needs to be made to compensate for the injection insertion angle, which makes it difficult to grasp the accuracy. In this embodiment, the second segment 26 is curved, so that the curvature of the eyeball can be attached to the second segment, and a small incision can be made. And, through the design of second section body 26, side trompil and blunt syringe needle cooperatees, can make the back of tiny incision, the syringe needle can be safe and effective through bulbar conjunctiva and fascia below along the scleral wall reach the muscle cone region at eyeball rear, inject anesthetic, needle tubing 20 more laminating eyeball, and injection velocity of flow is moderate, stable, can improve operation efficiency, reduces the operation risk.
In some embodiments of the present utility model, the second segment 26 is an arc segment, and the angle θ2 between the connecting line between one end of the second segment 26 and the other end of the second segment 26 and the first segment 25 is 110 ° to 170 °, including the end point values. For example, the angle between the line between one end of the second segment 26 and the other end of the second segment 26 and the first segment 25 is 120 °, 130 °, 155 °, 160 °, or the like. It should be noted that, if the angle between the line between one end of the second segment 26 and the other end of the second segment 26 and the first segment 25 is smaller than 110 °, the poor fitting of the needle tube 20 is easily caused, and if the angle between the line between one end of the second segment 26 and the other end of the second segment 26 and the first segment 25 is larger than 170 °, the top end of the needle tube 20 tends to be straight, and if the needle is inserted deeply, a larger incision needs to be made to compensate for the injection insertion angle, which is difficult to grasp.
In this embodiment, by defining the arcuate shape of the second segment 26, it is further possible to achieve a curvature of the eye of the needle cannula 20, making a minute incision.
According to one embodiment of the utility model, the length of the second segment 26 is 3mm to 12mm, inclusive. The length of the first segment 25 is 10mm to 40mm, inclusive. In this embodiment, by defining the length of each of the first segment 25 and the second segment 26, the needle cannula 20 is easily made to extend into and conform to the curvature of the eye.
Alternatively, as shown in fig. 1, the first section 25 of the needle cannula 20 extends leftward in the horizontal direction, and the second section 26 is an arc-shaped section provided on the left side of the first section 25 and extending upward and leftward. Along the left-right direction, the partial length L1 of the needle tube 20 in the horizontal direction is 30mm, the partial length L2 of the second segment 26 in the horizontal direction is 7.7mm, the second segment 26 is an arc segment with a radius R1 of 10mm, and the angle θ2 between the line connecting the left and right ends of the second segment 26 and the extending direction of the first segment 25 is 155 °.
In some embodiments of the present utility model, as shown in FIG. 2, the maximum distance L3 between the center of the outlet 22 and the second end of the needle cannula 20 is 0.3mm to 1.0mm, inclusive. Such as a maximum spacing of 0.5mm, 0.8mm, 0.9mm, etc. between the fluid outlet 22 and the second end of the needle cannula 20. In this embodiment, the side opening of the liquid outlet 22 is facilitated by defining a maximum distance between the center of the liquid outlet 22 and the second end of the needle cannula 20, facilitating the outflow of liquid.
According to an embodiment of the present utility model, as shown in fig. 4, the number of the liquid outlets 22 is two, and the two liquid outlets 22 are respectively disposed at two radial ends of the needle tube 20. That is, the two liquid outlets 22 at the top end of the needle tube 20 are located at two sides, so as to be opposite perforations, which is beneficial to improving the stability of the injection flow. In addition, the two liquid outlets 22 are symmetrically designed relative to the axis of the needle tube 20, so that the processing is convenient.
Alternatively, the second segment 26 is located at the left side of the first segment 25, and the second segment 26 extends toward the upper left, where the two liquid outlets 22 may be distributed along the inner and outer directions of the second segment 26 or may be distributed along the upper and lower directions of the second segment 26, which is not limited herein, so that the clinical effect can be achieved.
According to one embodiment of the present utility model, the cross section of the outlet 22 is circular, triangular, T-shaped, etc., that is, the outlet 22 is not limited to shapes other than circular.
Optionally, the second segment 26 is provided with a through hole along the wall thickness direction, the end of the through hole is the liquid outlet 22, the cross section of the through hole is identical to the cross section of the liquid outlet 22, the longitudinal section of the through hole is a section along the wall thickness direction of the second segment 26, and the section can be cylindrical, such as a cylinder, a cone, a T-shape, etc., and is not limited herein.
In some embodiments of the utility model, the inner diameter of the channel 21 is 0.6mm, 0.33mm, 0.26mm, 0.19mm, 0.2mm or 0.13mm, the inner diameter of the channel 21 being the same as the diameter of the outlet 22.
For example, as shown in fig. 2 and 4, the diameter d1 of the liquid outlet 22 is 0.2mm, and the inner diameter d2 of the passage 21 is 0.2mm, so that the amount of liquid discharged from the liquid outlet 22 can be increased.
That is, when the inner diameter d2 of the needle tube 20 is 0.2mm, the outer diameter of the needle tube 20 is 0.4mm. Alternatively, the inner diameter d2 of the needle cannula 20 may also be 0.6mm and the outer diameter of the needle cannula 20 0.9mm. Alternatively, the inner diameter d2 of the needle tube 20 may be 0.33mm, and the outer diameter of the needle tube 20 may be 0.63mm. Alternatively, the inner diameter d2 of the needle tube 20 may be 0.26mm, and the outer diameter of the needle tube 20 may be 0.51mm. Alternatively, the inner diameter d2 of the needle tube 20 may be 0.19mm, and the outer diameter of the needle tube 20 may be 0.41mm. Alternatively, the inner diameter d2 of the needle tube 20 may be 0.13mm, and the outer diameter of the needle tube 20 may be 0.31 mm. It can be seen that the ophthalmic injection needle 100 of the present utility model can be applied to various sizes of needle tubes 20, and has a wide range of applications. In addition, by adopting the channel 21 and the liquid outlet 22 having the above-mentioned dimensions, it is advantageous to ensure that the needle tube 20 has both strength and ease of operation.
In summary, the ophthalmic injection needle 100 according to the embodiment of the present utility model can improve the safety and efficiency of the operation by discharging the liquid from the side and making the tip of the needle tube 20 slightly blunt.
The present utility model also provides an injector, which includes the ophthalmic injection needle 100 according to any of the above embodiments, so that the injector of the present utility model has the above advantages, and can improve the safety of the operation, which will not be described herein.
While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.
Claims (11)
1. An ophthalmic injection needle comprising:
a needle stand;
the needle comprises a needle seat, and is characterized in that the needle seat is arranged on the needle seat, a channel is defined in the needle seat, a liquid inlet communicated with the channel is formed in the first end of the needle seat, a liquid outlet communicated with the channel is formed in the needle seat, the liquid outlet is close to the second end of the needle seat, the second end of the needle seat is conical, and the angle of the top angle of the second end of the needle seat is a right angle or an obtuse angle.
2. The ophthalmic injection needle according to claim 1, wherein the second end of the needle tube has a triangular cross-section along the axial direction of the passage, and the outer side of the cross-section comprises a first straight side and a second straight side which are butted and symmetrically arranged.
3. The ophthalmic injection needle of claim 2, wherein an angle between the first straight edge and the second straight edge is 90 ° to 140 °.
4. The ophthalmic injection needle of claim 1, wherein the channel comprises a first channel and a second channel, the needle cannula comprising:
the first end of the first section body is provided with the liquid inlet, and the first section body is provided with the first channel;
the second section body is provided with the second channel, the first end of the second section body is communicated with the second end of the first section body, and the second end of the second section body is provided with the liquid outlet;
the first section body is a straight piece, the second section body is an arc piece, and the first section body and the second section body are in arc transition.
5. The ophthalmic injection needle according to claim 4, wherein the second segment is an arc segment, and an angle between a line between one end of the second segment and the other end of the second segment and the first segment is 110 ° to 170 °.
6. The ophthalmic injection needle according to claim 4, wherein the length of the second segment is 3mm to 12mm and the length of the first segment is 10mm to 40mm.
7. The ophthalmic injection needle of claim 1, wherein a maximum distance between a center position of the liquid outlet and the second end of the needle cannula is 0.3mm to 1.0mm.
8. The ophthalmic injection needle according to claim 1, wherein the number of the liquid outlets is two, and the two liquid outlets are respectively arranged at two radial ends of the needle tube.
9. The ophthalmic needle of claim 1 wherein the cross-section of the outlet is circular, triangular or T-shaped.
10. The ophthalmic injection needle of claim 1, wherein the channel has an inner diameter of 0.6mm, 0.33mm, 0.26mm, 0.19mm, 0.2mm, or 0.13mm, the inner diameter of the channel being consistent with the diameter of the liquid outlet.
11. A syringe comprising an ophthalmic injection needle according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223528529.XU CN219557779U (en) | 2022-12-28 | 2022-12-28 | Ophthalmic syringe needle and syringe with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223528529.XU CN219557779U (en) | 2022-12-28 | 2022-12-28 | Ophthalmic syringe needle and syringe with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219557779U true CN219557779U (en) | 2023-08-22 |
Family
ID=87659202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223528529.XU Active CN219557779U (en) | 2022-12-28 | 2022-12-28 | Ophthalmic syringe needle and syringe with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219557779U (en) |
-
2022
- 2022-12-28 CN CN202223528529.XU patent/CN219557779U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11752301B2 (en) | Catheter hole having a flow breaking feature | |
| US10549068B2 (en) | Catheter hole having an inclined trailing edge | |
| EP2716242B1 (en) | Pericardiocentesis needle component | |
| CA1219505A (en) | Dialysis needle | |
| US4889529A (en) | Needle | |
| JP2023501918A (en) | RF electrode cannula | |
| CA2825375A1 (en) | A catheter hole having an inclined trailing edge | |
| AU2011279479A1 (en) | A catheter hole having an inclined trailing edge | |
| CN219557779U (en) | Ophthalmic syringe needle and syringe with same | |
| CN213190528U (en) | Syringe with a needle | |
| JP6697206B1 (en) | Ophthalmic instruments | |
| CN211096872U (en) | Casing type under-tenon-capsule anesthesia apparatus | |
| US10589037B1 (en) | Injection needle for preventing tissue coring | |
| CN208989349U (en) | Ophthalmology Tenons capsule anesthetic needle head | |
| CN214679592U (en) | Needleless medicine adding connector and remaining needle | |
| CN216653044U (en) | Needle head | |
| CN219681347U (en) | Disposable needle for implanted drug delivery device | |
| CN218943684U (en) | Eye is through ball back injection needle under ten's bag | |
| CN218552824U (en) | Simple spring type anti-needle-stick-injury indwelling needle | |
| CN210538909U (en) | Electronic cigarette liquid injection needle | |
| CN217409461U (en) | Infusion needle seat and infusion needle | |
| CN214512155U (en) | Anti-drop nondestructive puncture needle suitable for infusion port | |
| CN216566248U (en) | Novel central vein puncture needle | |
| CN219814489U (en) | Ophthalmic injection needle with tongue | |
| CN110624167B (en) | Sleeve type sub-tenon anesthesia device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |