CN213552855U - Vitreous body injection positioner and vitreous body injection assembly - Google Patents
Vitreous body injection positioner and vitreous body injection assembly Download PDFInfo
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- CN213552855U CN213552855U CN202022322905.4U CN202022322905U CN213552855U CN 213552855 U CN213552855 U CN 213552855U CN 202022322905 U CN202022322905 U CN 202022322905U CN 213552855 U CN213552855 U CN 213552855U
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- needle
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- cylinder sleeve
- needle cylinder
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Abstract
The utility model discloses a vitreous body injection locator and vitreous body injection subassembly relates to ophthalmology medical instrument field. The vitreous body injection locator comprises a locating ruler, a needle cylinder sleeve and a connecting strip, wherein a needle head hole and a locating bulge are formed in the locating ruler, the distance between the needle head hole and the locating bulge is 3-4 mm, the needle cylinder sleeve and the needle head hole are coaxially arranged, the distance between the needle cylinder sleeve and the locating ruler is long, and the connecting strip is connected with the needle cylinder sleeve and the locating ruler. The vitreous injection locator may be a separate product that is assembled with the syringe during use. For ease of use, the vitreous injection locator and syringe may be pre-assembled as a single product to provide the vitreous injection assembly. When the utility model is used for vitreous body injection, the operation is more convenient.
Description
Technical Field
The utility model relates to an ophthalmology medical instrument field especially relates to a vitreous body injection locator and vitreous body injection subassembly.
Background
Intravitreal injection, i.e., intravitreal injection, is a method of injecting drugs into the vitreous cavity of the eyeball to treat eye diseases.
The structure of the eyeball is shown in fig. 1, and comprises a pupil, a cornea, a corneoscleral margin and a sclera from inside to outside in sequence. The puncture point for vitreous injection is strictly required, and as shown in fig. 1, the puncture point is located outside the corneoscleral edge and has a distance of 3-4 mm from the corneoscleral edge.
In order to ensure the accurate position of the puncture point, a positioner or a positioning ruler is adopted for positioning. Zl201921831002.x discloses a positioning device for vitreous cavity injection. The device comprises an eyeball fixing body and an injection positioning ruler, wherein an injection positioning part is arranged on the injection positioning ruler, and the distance between the injection positioning part and the eyeball fixing body is 3.5-4 mm. When the device is used, the eyeball fixing body is aligned to the corneosclera edge, the distance between the injection positioning portion and the corneosclera edge is 3.5-4 mm, the syringe needle penetrates through the injection positioning portion and penetrates into the eyeball, and the position of the puncture point meets the requirement.
The positioning device for vitreous cavity injection can assist in positioning the puncture point of vitreous body injection, but has the following disadvantages: when the vitreous body is injected, a hand-held positioning device is needed to align the eyeball fixing body with the corneal scleral edge; then another hand-held injector is aligned with the injection positioning part, passes through the injection positioning part and is penetrated into the eyeball; the operation is relatively complicated; and in order to position accurately, the injection positioning part is only slightly larger than the syringe needle, the syringe needle is not easy to align and insert into the injection positioning part, if the needle is deviated and touches the positioning device, the positioning device can move, and therefore the eyeball fixing body needs to be aligned with the corneoscleral edge newly.
ZL201620711522.7 discloses a vitreous injection locator which has similar structure and principle with the locating device for vitreous cavity injection and also has the same defects.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: provides a vitreous body injection positioner with convenient use.
The technical scheme adopted for solving the problems is as follows: the vitreous body injection locator comprises a locating ruler, a needle cylinder sleeve and a connecting strip, wherein a needle head hole and a locating bulge are formed in the locating ruler, the distance between the needle head hole and the locating bulge is 3-4 mm, the needle cylinder sleeve and the needle head hole are coaxially arranged, the distance between the needle cylinder sleeve and the locating ruler is long, and the connecting strip is connected with the needle cylinder sleeve and the locating ruler.
Further, the method comprises the following steps: the needle cylinder sleeve is provided with a deformation groove which is arranged along the axial direction of the needle cylinder sleeve.
Further, the method comprises the following steps: the vitreous body injection positioner comprises two handheld pieces, and the two handheld pieces are positioned on two sides of the deformation groove and connected with the needle cylinder sleeve.
The utility model discloses another technical problem who solves is: provides a vitreous body injection positioner with convenient use.
The technical scheme adopted for solving the problems is as follows: the vitreous injection assembly comprises an injector with a needle cylinder and a needle head; the glass body injection locator comprises a locating ruler, a needle cylinder sleeve and a connecting strip, wherein the locating ruler is provided with a needle head hole and a locating bulge, the distance between the needle head hole and the locating bulge is 3-4 mm, the needle cylinder sleeve and the needle head hole are coaxially arranged and are spaced from the locating ruler, and the connecting strip is connected with the needle cylinder sleeve and the locating ruler; the needle cylinder sleeve is sleeved on the needle cylinder and matched with the needle cylinder, and the needle head hole is sleeved on the needle head and matched with the needle head.
Further, the method comprises the following steps: the needle cylinder sleeve is provided with a deformation groove which is arranged along the axial direction of the needle cylinder sleeve.
Further, the method comprises the following steps: the vitreous body injection assembly comprises two handheld pieces, and the two handheld pieces are positioned on two sides of the deformation groove and connected with the needle cylinder sleeve.
Further, the method comprises the following steps: the vitreous body injection assembly comprises a needle cap and a sticker, wherein the needle cap is sleeved on the needle head and positioned in front of the positioning ruler, and the sticker is stuck on the needle cylinder and the needle cylinder sleeve.
The utility model has the advantages that: as shown in figure 4, before injection, the syringe is assembled and inserted into the vitreous cavity injection positioner, the syringe is matched with the syringe sleeve, the needle is matched with the needle hole, and the needle does not expose out of the positioning ruler. Then, holding the syringe by one hand and sleeving the other hand with the syringe to enable the positioning bulge to align with the corneoscleral edge; then the injector is moved forward to puncture. It is thus clear that the utility model discloses can realize the vitreous body injection location. When the injection is positioned, compared with the prior art, the step of aligning the needle head of the injector and inserting the injection positioning part is omitted, the problem caused by the fact that the needle head touches the positioning device is avoided, and the use is simpler, more convenient and more reliable.
Drawings
FIG. 1 is a schematic view of an eyeball and a puncture point;
FIG. 2 is a front view of the vitreous injection locator;
FIG. 3 is a right side view of the vitreous injection locator;
FIG. 4 is a diagram of a vitreous injection positioner in use;
FIG. 5 is a diagram of a vitreous injection assembly;
labeled as: the vitreous cavity injection positioner 1, the positioning ruler 11, the positioning bulge 111, the needle hole 112, the syringe sleeve 12, the deformation groove 121, the connecting strip 13, the handheld piece 14, the injector 2, the syringe 21, the needle 22, the needle cap 3, the paste 4, the eyeball 5, the pupil 51, the cornea 52, the corneoscleral edge 53, the sclera 54 and the injection point 6.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 2 and 3, the vitreous injection locator 1 includes a locating rule 11, a syringe sleeve 12 and a connecting strip 13, the locating rule 11 has a needle hole 112 and a locating protrusion 111, the distance between the needle hole 112 and the locating protrusion 111 is 3-4 mm, the syringe sleeve 12 and the needle hole 112 are coaxially arranged and have a distance with the locating rule 11, and the connecting strip 13 connects the syringe sleeve 12 and the locating rule 11.
The vitreous injection locator 1 can be used in conjunction with the existing injector 2 for vitreous injection. As shown in figure 4, before injection, the syringe 2 is inserted into the vitreous cavity injection locator 1, the syringe 21 is fitted with the syringe cover 12, the needle 22 is fitted with the needle hole 112, and the needle 22 does not expose the positioning rule 11. Then holding the syringe sleeve 12 with one hand and the syringe 2 with the other hand so that the positioning protrusion 111 is aligned with the corneoscleral rim 53; then the injector 2 is moved forward to puncture.
As previously mentioned, the barrel 21 needs to be fitted with the barrel housing 12 and the needle 22 needs to be fitted with the needle opening 112, so that the size of the inner bore of the barrel housing 12 and the size of the needle opening 112 should be designed according to the size of the syringe 2.
To further simplify the operation, it is preferable that the syringe cover 12 has a deformation groove 121, as shown in fig. 3, the deformation groove 121 being provided along the axial direction of the syringe cover 12. Thus holding the syringe jacket 12 and pinching the syringe jacket 12, the crush slots 121 allow the syringe jacket 12 to be compressed and compress the syringe 2. Therefore, when the positioning protrusion 111 is aligned with the corneoscleral edge 53, the syringe sleeve 12 can be pinched by only one hand without holding the syringe 2 by another hand, so that the operation is simpler and more convenient. When the syringe 2 is moved forward, the syringe 2 is held by hand and the syringe cover 12 is slightly released, so that the syringe 2 can be moved forward.
In order to facilitate the holding and avoid the direct holding of the syringe sleeve 12 from affecting the visual field, it is preferable that the vitreous injection positioner includes two holding pieces 14, and the two holding pieces 14 are located at both sides of the deformation groove 121 and connected with the syringe sleeve 12. Thus, the hand-held piece 14 can be held without directly holding the syringe sleeve 12, and the visual field is better.
The vitreous injection locator 1 may be a separate product but requires assembly with the injector 2 for use. For further ease of use, the vitreous injection locator 1 and the injector 2 may be pre-assembled as a single product, resulting in the vitreous injection assembly shown in FIG. 5. The vitreous injection assembly comprises a syringe 2 having a barrel 21 and a needle 22; the vitreous body injection locator comprises a locating ruler 11, a needle cylinder sleeve 12 and a connecting strip 13, wherein the locating ruler 11 is provided with a needle head hole 112 and a locating protrusion 111, the distance between the needle head hole 112 and the locating protrusion 111 is 3-4 mm, the needle cylinder sleeve 12 and the needle head hole 112 are coaxially arranged and have a distance with the locating ruler 11, and the connecting strip 13 is connected with the needle cylinder sleeve 12 and the locating ruler 11; the syringe cover 12 fits over the syringe 21 and engages the syringe 21, and the needle aperture 112 fits over the needle 22 and engages the needle 22. Therefore, the assembly step is omitted during use, and the method is simpler and more convenient.
To avoid needle stick injuries, the vitreous injection assembly should include a needle cap 3, the needle cap 3 being fitted over the needle 22 and in front of the positioning ruler 11. In order to avoid relative movement between the vitreous injection site 1 and the injector 2 prior to use, a glue 4 may be provided, the glue 4 adhering to the barrel 21 and barrel housing 12. When in use, the needle cap 3 is taken down, and the paste 4 is torn off.
Claims (7)
1. Vitreous injection locator, its characterized in that: including location chi (11), syringe cover (12) and connecting strip (13), syringe hole (112) and location arch (111) have on location chi (11), and the distance of syringe hole (112) and location arch (111) is 3 ~ 4mm, syringe cover (12) and syringe hole (112) coaxial setting and with location chi (11) within a definite time have the distance, syringe cover (12) and location chi (11) are connected in connecting strip (13).
2. The vitreous injection locator of claim 1, wherein: the needle cylinder sleeve (12) is provided with a deformation groove (121), and the deformation groove (121) is axially arranged along the needle cylinder sleeve (12).
3. The vitreous injection locator of claim 2, wherein: comprises two hand-held pieces (14), wherein the two hand-held pieces (14) are positioned at two sides of the deformation groove (121) and are connected with the syringe sleeve (12).
4. A vitreous injection assembly comprising a syringe (2) having a barrel (21) and a needle (22); the method is characterized in that: the glass body injection locator comprises a glass body injection locator (1), wherein the glass body injection locator (1) comprises a locating ruler (11), a needle cylinder sleeve (12) and a connecting strip (13), a needle head hole (112) and a locating bulge (111) are formed in the locating ruler (11), the distance between the needle head hole (112) and the locating bulge (111) is 3-4 mm, the needle cylinder sleeve (12) and the needle head hole (112) are coaxially arranged, the distance between the needle cylinder sleeve and the locating ruler (11) is reserved, and the connecting strip (13) is connected with the needle cylinder sleeve (12) and the locating ruler (11); the needle cylinder sleeve (12) is sleeved on the needle cylinder (21) and is matched with the needle cylinder (21), and the needle head hole (112) is sleeved on the needle head (22) and is matched with the needle head (22).
5. The vitreous injection assembly of claim 4, wherein: the needle cylinder sleeve (12) is provided with a deformation groove (121), and the deformation groove (121) is axially arranged along the needle cylinder sleeve (12).
6. The vitreous injection assembly of claim 5, wherein: comprises two hand-held pieces (14), wherein the two hand-held pieces (14) are positioned at two sides of the deformation groove (121) and are connected with the syringe sleeve (12).
7. The vitreous injection assembly of claim 6, wherein: comprises a needle cap (3) and a paste (4), wherein the needle cap (3) is sleeved on a needle head (22) and is positioned in front of a positioning ruler (11), and the paste (4) is adhered on a needle cylinder (21) and a needle cylinder sleeve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022322905.4U CN213552855U (en) | 2020-10-19 | 2020-10-19 | Vitreous body injection positioner and vitreous body injection assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022322905.4U CN213552855U (en) | 2020-10-19 | 2020-10-19 | Vitreous body injection positioner and vitreous body injection assembly |
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|---|---|
| CN213552855U true CN213552855U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022322905.4U Active CN213552855U (en) | 2020-10-19 | 2020-10-19 | Vitreous body injection positioner and vitreous body injection assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113476205A (en) * | 2021-08-16 | 2021-10-08 | 首都医科大学附属北京友谊医院 | Eyeball vitreous cavity injection device capable of achieving accurate positioning and quantitative injection |
-
2020
- 2020-10-19 CN CN202022322905.4U patent/CN213552855U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113476205A (en) * | 2021-08-16 | 2021-10-08 | 首都医科大学附属北京友谊医院 | Eyeball vitreous cavity injection device capable of achieving accurate positioning and quantitative injection |
| CN113476205B (en) * | 2021-08-16 | 2023-11-17 | 首都医科大学附属北京友谊医院 | Injection device for injecting medicine into vitreous cavity of eyeball with accurate positioning and quantitative injection |
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