CN213190321U - Corneal transplantation injector - Google Patents

Abstract

The utility model discloses a cornea transplantation injecting device, including ejector sleeve, sleeve pipe, push rod, folding clamp, silica gel head and spring, the ejector sleeve includes tub section of thick bamboo and two push pedals, two push pedal symmetries set up in tub section of thick bamboo rear end both sides, the sleeve pipe includes sleeve and fender ring, it fixes at telescopic tip to keep off the ring, the push rod includes ejector sleeve and cylinder, the seamless one end that inserts the ejector sleeve of cylinder removes in the ejector sleeve that can move about, the other end of ejector sleeve is equipped with pushes away the cake, the sleeve pipe inserts from the ejector sleeve pipe that is close to the ejector sleeve board end to keep off the ring subsides at the port of ejector sleeve pipe on the sleeve pipe, the push rod inserts the sheathed tube from the one end of cylinder and extends to the tip department of ejector sleeve pipe, the spring setting is in the ejector sleeve pipe and extends to the sleeve pipe inside and ejector sleeve pipe tip butt. The utility model discloses it is convenient to transplant the cornea after the cutting, and transplant the storage stage and can prevent to pollute, inject into easy operation, security in patient's eyes with the cornea.

Description

Corneal transplantation injector

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a corneal transplantation injector.

Background

Corneal transplantation is an operation in which diseased corneal tissue of an eye is removed and a clear, transparent, normally functioning cornea is replaced. Depending on the location of the corneal lesion, if central, only the central portion is replaced; if the cornea is located at the edge of the cornea, the cornea with edge lesion is replaced. However, in the transplantation process after the cornea is removed, the cornea after cutting is difficult to absorb, the cornea after absorption is easy to be polluted, and the transplantation into the eyes of patients is difficult. Moreover, the above operation is often complicated and difficult.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, an object of the utility model is to provide a cornea transplantation injector, it is convenient to the cornea of the eye after the cutting, and transplant the storage phase and can prevent to pollute, inject the cornea into patient's eye interior easy operation, security height.

According to the utility model, the cornea transplantation injector comprises an ejector sleeve, a push rod, a folding clamp, a silica gel head and a spring, the push pipe comprises a pipe barrel part and two push plates, the two push plates are symmetrically arranged at two sides of the rear end of the pipe barrel part, the sleeve comprises a sleeve and a baffle ring, the baffle ring is fixed at the end part of the sleeve, the push rod comprises a push cylinder and a needle cylinder, one end of the needle cylinder is seamlessly inserted into one end of the push cylinder and can movably move in the push cylinder, the other end of the push cylinder is provided with a push cake, the sleeve is inserted from a push pipe close to the end of the push plate, and the sleeve upper baffle ring is attached to the port of the push tube, the push rod is inserted into the sleeve from one end of the syringe and extends to the end part of the push tube, the spring sets up in the push tube and extends to the cover intraduct and push away a tip butt, the silica gel head is installed and is being folded and press from both sides one end, overlaps when folding clamp lid closes the back and overlaps at silica gel head front end.

In some embodiments of the utility model, be equipped with a plurality of breachs on the sleeve pipe, the tip that the pushing cylinder meets with the cylinder is equipped with the elasticity dop, when the pushing cylinder was at the intraductal activity of cover, the elasticity dop can block in the breach.

In other embodiments of the present invention, the silicone head includes a needle head portion and a joint portion, the joint portion is in a round platform shape, the end with a smaller inner diameter of the joint portion is connected to the needle head portion, the end with a larger inner diameter of the joint portion is connected to the needle cylinder, and the front end of the needle head portion is provided with a convex portion.

In other embodiments of the present invention, the pushing tube is provided with a needle cylinder accommodating cavity inside, and the front end of the pushing tube is provided with a clamping head matching with the clamping portion.

In other embodiments of the present invention, the inner diameter of the silica gel head is 2.5mm, the outer diameter is 2.75mm, the length of the folded clip is 10mm, the width thereof is 10mm, and the front end of the silica gel head is an inclined plane.

In other embodiments of the present invention, the push tube has an outer diameter of 10mm and an inner diameter of 8mm at the position of the push plate, and the inner diameter of the syringe accommodating chamber is 6 mm.

In the utility model, the front end of the needle cylinder is placed at the position of the cut cornea, the needle cylinder is pulled outwards (but not pulled out of the push cylinder), the push rod after sucking the cornea is inserted into the sleeve and extends to the end part of the push cylinder, but the needle cylinder is still in the needle cylinder accommodating cavity, at this stage, the needle cylinder accommodating cavity can prevent the convection of air at the needle cylinder part to a certain extent, the pollution of the needle cylinder is greatly reduced, the safety and no pollution of the cornea solution are reduced, when the cornea is transplanted, the push cake of the push rod is pushed, the needle head part of the needle cylinder is pushed to the position of the push cylinder chuck, the push is continued to push the needle head part out of the chuck, the chuck part can not move at the chuck part, at this time, the needle head part is placed at the eye of the patient transplanted with the cornea, then the push is continued, the needle cylinder is inserted into the push cylinder, so that the cornea liquid in the needle cylinder flows out of the, and (5) carrying out cornea transplantation. The process is simple to operate, convenient to transplant, low in pollution and high in safety.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of an explosive structure of a corneal transplantation injector according to the present invention.

Fig. 2 is a schematic structural view of the cornea transplantation injector after installation.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic structural view of the corneal transplantation injector of the present invention when the needle head is pushed out of the chuck after installation.

Fig. 5 is a schematic structural view of the corneal graft injector according to the present invention when the cornea in the syringe is pushed into the eye of the patient (the folding clip is mounted on the silicone head).

Fig. 6 is a schematic structural diagram of the push rod according to the present invention.

Fig. 7 is an enlarged view of B in fig. 6.

Fig. 8 is a schematic structural diagram of the sleeve according to the present invention.

Fig. 9 is a schematic structural view of the push tube according to the present invention.

Fig. 10 is a schematic cross-sectional view of the push tube according to the present invention.

Fig. 11 is a schematic structural view of the folding clip of the present invention.

In the figure: 1. pushing the tube; 11. pushing the plate; 12. a spring; 13. clamping a head; 14. a syringe accommodating chamber; 2. a sleeve; 21. a baffle ring; 22. a notch; 3. a push rod; 31. a needle cylinder; 32. a push cylinder; 321. pushing the cake; 322. an elastic chuck; 4. folding the clip; 5. a silica gel head; 51. a clamping part; 52. a needle head section.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element 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" and "first" 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" or "second" 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 specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-10, a corneal transplantation injector comprises a push tube 1, a sleeve 2, a push rod 3 and a spring 12, wherein the push tube 1 comprises a tube part and two push plates 11, the two push plates 11 are symmetrically arranged at two sides of the rear end of the tube part, the sleeve 2 comprises a sleeve and a baffle ring 21, the baffle ring 21 is fixed at the end part of the sleeve, the push rod 3 comprises a push cylinder 32 and a needle cylinder 31, one end of the needle cylinder 31 is seamlessly inserted into one end of the push cylinder 32 and can movably move in the push cylinder 32, the other end of the push cylinder 32 is provided with a push cake 321, the sleeve 2 is inserted from the push tube 1 close to the end of the push plate 11, the baffle ring 21 on the sleeve 2 is attached to the port of the push tube 1, the push rod 3 is inserted into the sleeve 2 from one end of the needle cylinder 31 and extends to the end part of the push tube 1, the spring 12 is arranged in the push tube 1 and extends to the inner part of the sleeve 2 to abut against the end part, when the folding clip 4 is covered, the front end of the silica gel head 5 is sleeved with the folding clip.

The folding clip 4 is in an open state, the cornea is clipped by forceps and put into the folding clip cavity (sodium hyaluronate gel is coated in the folding clip cavity in advance), and then the folding clip 4 is covered. When the silica gel head 5 on the push rod 3 is exposed out of the push tube 1, the folded folding clamp 4 is sleeved at the front end of the silica gel head 5, sodium hyaluronate gel is also arranged in the needle cylinder 31, the push cylinder 32 is pushed, the needle cylinder 3 enters the push cylinder 32, and the sodium hyaluronate gel in the needle cylinder 31 is injected into the folding clamp 4, so that the cornea is pushed to flow into human eyes from the front end of the folding clamp 4.

The silica gel head 5 is not easy to damage the cornea, the folding clamp 4 has no edges and corners inside, the artificial cornea is not damaged, and the sodium hyaluronate gel plays roles in protecting the cornea and lubricating the cornea.

The sleeve 2 is provided with a plurality of notches 22, the end part of the push cylinder 32 connected with the needle cylinder 31 is provided with an elastic clamping head 322, and when the push cylinder 32 moves in the sleeve 2, the elastic clamping head 322 can be clamped in the notches 22.

When the elastic chuck 322 moves in the sleeve 2 without the notch 22, the elastic chuck 322 is elastic, the push tube 32 has a certain resistance, the resistance is larger than the spring, after the elastic chuck 322 enters the notch 22, the resistance of the sleeve 2 disappears, only the spring resistance exists, and the notch 22 mainly comprises three parts, so that the moving position of the push tube 32 is known without pushing for a certain distance. The elastic chuck 322 will open after entering the gap 22, and the push cylinder cannot be pushed back even with the spring pushing force. When the person does not push, the push cylinder 32 is ensured to be fixed in a fixed position. The first notch 22 position represents insertion of the barrel 31 into the barrel receiving chamber 14, the second notch 22 position represents pushing the tip portion 313 to the chuck 13 position, the third position pushes the chuck portion 313 out, and the length of the notch 22 is such that the corneal contact solution is pushed into the patient's eye.

The silica gel head 5 comprises a needle head part 51 and a clamping part 52, the clamping part 52 is in a circular truncated cone shape, the smaller inner diameter end of the clamping part 52 is connected with the needle head part 51, the larger inner diameter end of the clamping part 52 is connected with the needle cylinder 31, and the front end of the needle head part 51 is provided with a convex part 511. Since the syringe 31 can be pushed into the plunger 32 only when the syringe 31 needs to be fixed, the head portion 51 is allowed to pass through the head portion 13 provided at the front end of the plunger, but the engaging portion 52 is blocked, the blocked engaging portion 52 prevents the syringe 31 from moving, and then the plunger 32 is pushed continuously, so that the syringe 31 enters the plunger 32. When the snap-in portion 52 is blocked, the folding clip 4 is fitted over the silicone head 5. The protrusion 511 is just stuck in the corneal cavity of the folding clip 4.

The syringe containing cavity 14 is arranged inside the push tube 1, and the front end part of the push tube 1 is provided with a clamping head 13 matched with the clamping part 13. The cartridge receiving chamber 14 protects the cartridge 31 from air contamination.

The silica gel head 5 internal diameter is 2.5mm, and the external diameter is 2.75mm, folding back of pressing from both sides 4 is long for 10mm, and is wide for 10mm, 5 front ends of silica gel head are the inclined plane. The push tube 1 has an outer diameter of 10mm and an inner diameter of 8mm at the position of the push plate 11, and the inner diameter of the needle cylinder accommodating cavity 14 is 6 mm. The parameters are set according to the practical operation convenience and the operation safety, and the cornea solution suction device has the characteristics of high safety, smooth operation and safe operation to the cornea solution suction and injection into the eyes of patients.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. A corneal transplantation injector, characterized in that: comprises a push tube (1), a sleeve (2), a push rod (3), a folding clamp (4), a silica gel head (5) and a spring (12), wherein the push tube (1) comprises a tube barrel part and two push plates (11), the two push plates (11) are symmetrically arranged at the two sides of the rear end of the tube barrel part, the sleeve (2) comprises a sleeve and a baffle ring (21), the baffle ring (21) is fixed at the end part of the sleeve, the push rod (3) comprises a push tube (32) and a needle cylinder (31), the silica gel head (5) is arranged at the front end of the needle cylinder (31), one end of the needle cylinder (31) is seamlessly inserted into one end of the push tube (32) and can move in the push tube (32) movably, the other end of the push tube (32) is provided with a push cake (321), the sleeve (2) is inserted from the push tube (1) close to the end of the push plate (11), and the baffle ring (21) on the sleeve (2) is pasted at the port of the push tube (1), the push rod (3) is inserted into the sleeve (2) from one end of the needle cylinder (31) and extends to the end part of the push tube (1), the spring (12) is arranged in the push tube (1) and extends into the sleeve (2) to be abutted against the end part of the push tube (32), and the folding clamp (4) is covered and then sleeved at the front end of the silica gel head (5).

2. The corneal transplantation injector of claim 1, wherein: the novel syringe is characterized in that a plurality of notches (22) are formed in the sleeve (2), an elastic clamping head (322) is arranged at the end part, connected with the needle cylinder (31), of the push cylinder (32), and the elastic clamping head (322) can be clamped in the notches (22) when the push cylinder (32) moves in the sleeve (2).

3. The corneal transplantation injector of claim 1, wherein: the silica gel head (5) comprises a needle head part (51) and a clamping part (52), the clamping part (52) is in a circular truncated cone shape, the end with the smaller inner diameter of the clamping part (52) is connected with the needle head part (51), the end with the larger inner diameter of the clamping part (52) is connected with the needle cylinder (31), and the front end of the needle head part (51) is provided with a convex part (511).

4. A corneal transplantation injector according to claim 3, wherein: the syringe containing cavity (14) is arranged inside the push tube (1), and the front end of the push tube (1) is provided with a clamping head (13) matched with the clamping part (52).

5. A corneal transplantation injector according to claim 3, wherein: the inner diameter of the silica gel head (5) is 2.5mm, the outer diameter of the silica gel head is 2.75mm, the length of the folding clamp (4) is 10mm after being folded, the width of the folding clamp is 10mm, and the front end of the silica gel head (5) is an inclined plane.

6. The corneal transplantation injector of claim 4, wherein: the outer diameter of the push tube (1) at the position of the push plate (11) is 10mm, the inner diameter of the push tube is 8mm, and the inner diameter of the needle cylinder accommodating cavity (14) is 6 mm.

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