CN218792741U

CN218792741U - Push injection device for assisting intraocular amniotic membrane transplantation

Info

Publication number: CN218792741U
Application number: CN202221784913.3U
Authority: CN
Inventors: 颜华; 孟祥达; 刘媛媛; 毛春洁; 于金国; 蒋建虹
Original assignee: Tianjin Medical University General Hospital
Current assignee: Tianjin Medical University General Hospital
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-04-07
Anticipated expiration: 2032-07-12

Abstract

The utility model provides a supplementary intraocular amniotic membrane transplantation's injection device, including the handle, the handle includes head end and tail end, and the head end is provided with hollow sleeve pipe, and hollow sheathed tube is provided with the slip pipe, is provided with on the handle to be used for driving the slip pipe at the gliding slider of hollow sheathed tube, and the tip of slip pipe is provided with the silica gel head, and the slider can slide and make the silica gel head pass in and out at hollow sheathed tube along handle length direction. Supplementary intraocular amniotic membrane transplantation's injection device in the operation process will handle the amniotic membrane suction hollow sleeve intraductal, rethread sclera incision gets into in the eye, can prevent that the amniotic membrane from losing to and prevent that the amniotic membrane is damaged in the removal process.

Description

Push injection device for assisting intraocular amniotic membrane transplantation

Technical Field

The utility model belongs to the field of medical equipment, especially, relate to a push injection device of supplementary intraocular amnion transplantation.

Background

The macula is the most visually acute part of the eye, and its structural integrity forms the basis of our central vision. Macular hole is a disease that damages the macula, and has a great influence on the quality of life of patients. At present, the treatment of the macular hole is mainly to tear off an inner limiting membrane and release the tangential traction force of the fovea centralis, so that the macular hole is attached to achieve anatomical reduction. However, in many cases, the closure rate of the macular holes is low, such as some macular holes with large diameters, the macular holes caused by trauma or high myopia, and the like, and some macular holes are again cracked after the operation, and the prognosis is poor, so the macular holes are generally called refractory macular holes.

At present, for refractory macular hole, the inner limiting membrane tearing is mostly adopted with the assistance of operation modes such as inner limiting membrane overturning, inner limiting membrane filling and the like, and the hole-cracking closing rate is improved to a certain extent. However, the inner limiting membrane has poor inversion stability and is easy to fall off or shift, and the retinal nerve and pigment epithelial cells are easy to be damaged in the inner limiting membrane filling process, so that the visual function recovery is possibly unfavorable. At present, human amniotic membrane transplantation can be adopted, amniotic tissues not only provide a substrate and a support for glial cell migration, but also are rich in trophic factors and growth factors, so that healing and function recovery of macular holes can be better promoted, and the surgical mode has a good effect on huge and recurrent macular holes. However, at present, the amnion is clamped by the forceps in the eye and enters the eye through the scleral incision, the amnion is easy to lose or damage in the process, and in addition, the amnion is easy to adhere and cannot be flattened because the eye is in an air filling state.

Disclosure of Invention

In view of this, the utility model aims at overcoming the defects in the prior art and providing a push injection device for assisting the intraocular amniotic membrane transplantation.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the utility model provides an injection device that supplementary intraocular amniotic membrane was transplanted, includes the handle, and the handle includes head end and tail end, and the head end is provided with hollow sleeve pipe, is provided with the slip pipe in the hollow sleeve pipe, is provided with on the handle to be used for driving the gliding slider of slip pipe in hollow sleeve pipe, and the tip of slip pipe is provided with the silica gel head, and the slider can slide and make the silica gel head pass in and out in hollow sleeve pipe along handle length direction.

Furthermore, the slider sets up the lateral wall at the handle, is provided with the slip chamber with hollow sleeve pipe intercommunication in the handle, and the slip intracavity is provided with the slide, and the slide is connected with the slider, and the gliding chute of confession slider is seted up to the lateral wall of handle.

Furthermore, the slider sets up the tail end at the handle, is provided with the slip chamber with hollow sleeve pipe intercommunication in the handle, and the slip intracavity is provided with the slide, and the tip opening of handle is connected through the connecting rod between slider and the slide.

Furthermore, a limiting block for limiting the displacement distance of the hollow sleeve is arranged in the sliding cavity.

Further, the silica gel head includes anterior segment and back end, and the anterior segment setting is outside at the slip pipe, and the back end setting is inside at the slip pipe.

Further, when pushing away the slider to its head end position that is close to the handle, the anterior segment of silica gel head slides to hollow sheathed tube outside, when pushing away the slider to the position of the tail end that is close to the handle, the anterior segment of silica gel head all slides to hollow sheathed tube inside.

Furthermore, the length of the silica gel head is 5mm, the length of the front section of the silica gel head is 1.5mm, and the length of the rear section of the silica gel head is 3.5mm.

Further, when the slider is pushed to a position close to the tail end of the handle, the distance between the end part of the silica gel head and the end part of the hollow sleeve is 2mm.

Further, the hollow sleeve has a dimension of 23G, and the sliding tube has a dimension of 25G.

Furthermore, the length of the hollow sleeve is 32-42mm, the outer diameter is 0.64mm, and the inner diameter is 0.5mm.

Compared with the prior art, the utility model discloses following advantage has:

(1) The utility model discloses a push injection device for assisting amnion transplantation in eyes sucks the processed amnion into a hollow sleeve in the operation process, and then enters the eyes through a sclera incision, thereby preventing the amnion from being lost and being damaged in the moving process;

(2) The utility model of the injection device for assisting the intraocular amnion transplantation, after the amnion of the hollow sleeve is pushed out and placed at the macular hole, the silica gel head through the setting of slip pipe end gently massages and spreads, can make amnion and split hole absorption, avoids the amnion to take place to glue even, influences the operation effect.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic structural diagram of a push injection device for assisting intraocular amniotic membrane transplantation according to an embodiment of the present invention;

fig. 2 is a partial structural schematic view of a handle head according to embodiment 1 of the present invention;

fig. 3 is a schematic view of an end structure of a hollow casing according to embodiment 1 of the present invention;

fig. 4 is a schematic longitudinal sectional view of the injection device for assisting intraocular amniotic membrane transplantation according to embodiment 2 of the present invention.

Description of reference numerals:

1. a handle; 11. a sliding cavity; 12. a slide plate; 13. a chute; 14. a connecting rod; 15. a limiting block; 2. a hollow sleeve; 3. a sliding tube; 4. a silica gel head; 41. a front section; 42. a rear section; 5. a slide block.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

The embodiment provides a push injection device for assisting intraocular amniotic membrane transplantation as shown in fig. 1-3, which comprises a handle 1, wherein the handle 1 comprises a head end and a tail end, the head end is provided with a hollow sleeve 2, a sliding tube 3 is arranged in the hollow sleeve 2, a sliding block 5 for driving the sliding tube 3 to slide in the hollow sleeve 2 is arranged on the handle 1, the sliding block 5 is arranged on the side wall of the handle 1, a sliding cavity 11 communicated with the hollow sleeve 2 is arranged in the handle 1, a sliding plate 12 is arranged in the sliding cavity 11, the sliding plate 12 is connected with the sliding block 5 through a connecting rod 14, and a limiting block 15 for limiting the displacement distance of the hollow sleeve 2 is arranged in the sliding cavity 11. The side wall of the handle 1 is provided with a slide groove 13 for the sliding of the slide block 5. The sliding block 5 slides along the sliding channel groove 13, so that the sliding plate 12 can be pushed to move in the sliding cavity 11, and the sliding tube 3 in the hollow sleeve 2 can slide.

The end of the sliding tube 3 is provided with a silica gel head 4, and the sliding block 5 can slide along the length direction of the handle 1 and enables the silica gel head 4 to enter and exit the hollow sleeve 2. The silicone head 4 includes a front section 41 and a rear section 42, the front section 41 is disposed outside the sliding tube 3, and the rear section 42 is disposed inside the sliding tube 3. The purpose of the anterior segment 41 is to massage the amnion to spread it and to open the fissure.

Preferably, the hollow sleeve 2, the sliding tube 3, the handle 1, the silica gel head 4 and the sliding cavity 11 are all concentrically arranged.

Promote slider 5 to when being close to the position of the tail end of handle 1, anterior segment 41 of silica gel head 4 is whole to slide to hollow sleeve 2's inside (under the natural state), promote slider 5 to when its head end position that is close to handle 1, anterior segment 41 of silica gel head 4 slides to hollow sleeve 2's outside (under the operating condition), the tip of slide tube 3 aligns with hollow sleeve 2's tip this moment, this position is realized by stopper 15 in the sliding chamber 11, of course, also can realize through the length of designing the slideway groove 13 accurately.

In this embodiment, the length of the silicone head 4 is 5mm, the front section 41 is 1.5mm, and the rear section 42 is 3.5mm. When the slider 5 is pushed to a position close to the tail end of the handle 1, the distance between the end part of the silica gel head 4 and the end part of the hollow sleeve 2 is 2mm, so that one end in the hollow sleeve 2 forms an amnion accommodating cavity, the distance is also realized by a limiting block 15 in the sliding cavity 11, and certainly, the distance can also be realized by accurately designing the length of the sliding channel groove 13. The space formed by 2mm in the hollow casing 2 is used for accommodating amnion.

In this embodiment, the hollow casing 2 has a size of 23G, and the hollow casing 2 has a length of 32-42mm, an outer diameter of 0.64mm and an inner diameter of 0.5mm. The slide tube 3 has a dimension of 25G.

It should be noted that the size of the hollow cannula 2 and the sliding tube 3 can be selected and adjusted according to the actual needs of the clinical operation.

Example 2

This embodiment provides a push injection device for assisting intraocular amniotic membrane transplantation as shown in fig. 4, and the difference between this embodiment and embodiment 1 is that: the slider 5 is arranged at the tail end of the handle 1, a sliding cavity 11 communicated with the hollow sleeve 2 is arranged in the handle 1, a sliding plate 12 is arranged in the sliding cavity 11, the end part of the handle 1 is opened, and the slider 5 is connected with the sliding plate 12 through a connecting rod 14.

The utility model discloses a supplementary intraocular amniotic membrane transplantation's injection device's use does:

s1: cutting off the central vitreous body, and tearing off the inner limiting membrane around the macular hole;

s2: gas-liquid exchange is carried out, so that the vitreous cavity is filled with air;

s3: inserting the cut amnion into the amnion containing cavity at the end of the hollow sleeve 2;

s4: the hollow sleeve 2 enters the eye through the scleral incision to the front of the macular hole, the sliding block 5 is pushed, the sliding tube 3 in the hollow sleeve 2 moves forwards, the amnion in the amnion accommodating cavity is pushed to come out from the end part of the hollow sleeve 2, the amnion is attached to the macular hole through the soft silica gel head 4 by gentle massage, and the liquid around the macular hole is sucked and removed to ensure that the attachment is tighter;

s5: after the operation is finished, the sliding block 5 is slid, so that the sliding tube 3 moves backwards and retracts into the hollow sleeve 2.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A push injection device for assisting intraocular amniotic membrane transplantation is characterized in that: the handle comprises a head end and a tail end, the head end is provided with a hollow sleeve, a sliding pipe is arranged in the hollow sleeve, a sliding block used for driving the sliding pipe to slide in the hollow sleeve is arranged on the handle, a silica gel head is arranged at the end part of the sliding pipe, and the sliding block can slide along the length direction of the handle and enables the silica gel head to enter and exit in the hollow sleeve.

2. The injector device for assisting intraocular amniotic membrane transplantation according to claim 1, wherein: the slider sets up the lateral wall at the handle, is provided with the slip chamber with hollow sleeve pipe intercommunication in the handle, and the slip intracavity is provided with the slide, and the slide passes through the connecting rod with the slider to be connected, and the gliding chute of confession slider is seted up to the lateral wall of handle.

3. The injector device for assisting intraocular amniotic membrane transplantation according to claim 1, wherein: the slider sets up the tail end at the handle, is provided with the slip chamber with hollow sleeve pipe intercommunication in the handle, and the slip intracavity is provided with the slide, and the tip opening of handle passes through the connecting rod between slider and the slide and is connected.

4. The intraocular amniotic membrane transplantation assisting bolus device according to claim 2 or 3, wherein: and a limiting block for limiting the displacement distance of the hollow sleeve is arranged in the sliding cavity.

5. The injector device for assisting intraocular amniotic membrane transplantation according to claim 1, wherein: the silica gel head includes anterior segment and back end, and the anterior segment setting is outside at the slip pipe, and the back end setting is inside the slip pipe.

6. The injector device for assisting intraocular amniotic membrane transplantation according to claim 1, wherein: when promoting the slider to its head end position that is close to the handle, the anterior segment of silica gel head slides to hollow sheathed tube outside, when promoting the slider to the position of the tail end that is close to the handle, the anterior segment of silica gel head all slides to hollow sheathed tube inside.

7. The injector for assisting intraocular amniotic membrane transplantation according to claim 5, wherein: the length of the silica gel head is 5mm, the length of the front section of the silica gel head is 1.5mm, and the length of the rear section of the silica gel head is 3.5mm.

8. The injector device for assisting intraocular amniotic membrane transplantation according to claim 6, wherein: when the slide block is pushed to a position close to the tail end of the handle, the distance between the end part of the silica gel head and the end part of the hollow sleeve is 2mm.

9. The injector device for assisting intraocular amniotic membrane transplantation according to claim 1, wherein: the hollow sleeve has a size of 23G, and the sliding tube has a size of 25G.

10. The injector for assisting intraocular amniotic membrane transplantation according to claim 1, wherein: the length of the hollow sleeve is 32-42mm, the outer diameter is 0.64mm, and the inner diameter is 0.5mm.