CN219397871U - Pillow base and cornea trephine - Google Patents

Abstract

The utility model relates to the technical field of medical appliances, and discloses a pillow seat of a cornea trephine, which comprises a body, wherein the body is provided with an inner cavity and an air hole which is arranged on the outer wall of the body and is communicated with the inner cavity; the middle part of body upper surface is sunken to form a storage tank, and the bottom of storage tank is the adsorption part, and the adsorption part is used for adsorbing donor cornea, and the inside sunken setting of adsorption part is the arc and arranges, so as to with the shape adaptation of donor cornea, adsorption part and body integrated injection moulding, the middle part of adsorption part is provided with the first hole of inhaling of a intercommunication inner chamber, and a plurality of second holes of inhaling along first hole circumference evenly distributed. By integrally injection molding the pillow body and the adsorption part, the pillow body and the adsorption part are prevented from being assembled in a split mode, assembly errors are reduced, the shape of the cut cornea is more regular, and the problems of astigmatism, implant edema and the like of a patient after operation are avoided.

Description

Pillow base and cornea trephine

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a pillow seat and a cornea trephine.

Background

In the prior art, a cornea trephine consists of two parts, namely a pillow seat and a drilling tool, wherein the pillow seat generally consists of a pillow seat body and an adsorption part, an adsorption hole for adsorbing cornea is arranged on the adsorption part, and the existing pillow seat is manufactured by respectively processing the pillow seat body and the adsorption part and then assembling the pillow seat. Due to assembly errors, the shape of the cut cornea is irregular, and the problems of astigmatism, edema of the implant and the like are caused after the operation of a patient.

Disclosure of Invention

The utility model aims to provide a pillow seat and a cornea trephine, and aims to solve the problems that in the prior art, cornea trephine cuts a cornea with an irregular shape, so that astigmatism, edema of a implanted piece and the like are generated after operation of a patient.

In a first aspect, the present application provides a pillow block for a corneal trephine, comprising a body, the body is provided with an inner cavity and an air hole which is arranged on the outer wall of the body and communicated with the inner cavity; the middle part of body upper surface is sunken to form a holding groove, the bottom of holding groove is the adsorption part, the adsorption part is used for adsorbing donor cornea, the adsorption part is inwards sunken to be set up, the surface of adsorption part is the arc and arranges to with the shape adaptation of donor cornea, the adsorption part with body integral injection moulding, the middle part of adsorption part is provided with a intercommunication the first suction port of inner chamber, and along a plurality of second suction ports of first suction port circumference evenly distributed.

Further, the number of the second suction holes is 8.

Further, the second suction holes comprise 1 first sub-suction hole and the rest second sub-suction holes; the shape of the first sub-suction holes is different from the shape of the second sub-suction holes.

Further, the shape of the first sub-suction hole is triangular.

Further, the second sub-suction holes are round holes or oval holes.

Further, the accommodating groove is gradually reduced from top to bottom, and the groove wall is in an arc surface.

Further, the air hole is arranged on the peripheral wall of the body.

In a second aspect, the present application provides a corneal trephine, including a drill bit and a pillow seat as described above, where the drill bit includes a base plate, a cutter disposed on a lower surface of the base plate, and guide posts circumferentially distributed along the cutter;

the upper surface of pillow seat is provided with the jack that is used for cooperating the guide post, the jack is evenly distributed along the periphery of storage tank.

Further, a plurality of hand-held holes are formed through the substrate in the up-down direction, are uniformly distributed on the periphery of the cutter, and are arranged at intervals with the guide posts.

Compared with the prior art, the pillow seat and the cornea trephine have the advantages that the pillow seat body and the adsorption part are integrally injection molded, so that the pillow seat body and the adsorption part are prevented from being assembled in a split mode, assembly errors are reduced, the shape of the cut cornea is more regular, and the problems of astigmatism, implant edema and the like of a patient after operation are avoided; simultaneously, the absorption portion inwards sunken setting, the surface of absorption portion is the arc and arranges for the shape of absorption portion adaptation cornea more like this, makes the cornea cutting effect better.

Drawings

FIG. 1 is a schematic view of an embodiment of a pillow according to the present utility model;

FIG. 2 is an exploded view of the structure of a corneal trephine provided in an embodiment of the present utility model;

FIG. 3 is a schematic view of the drill bit of FIG. 2 according to an embodiment of the present utility model;

fig. 4 is a schematic view of a drill provided in an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The implementation of the present utility model will be described in detail below with reference to specific embodiments.

The utility model provides a pillow seat and a cornea trephine comprising the same. The cornea trephine comprises a pillow seat and a drill bit, wherein the pillow seat is mainly used for adsorbing and fixing a donor cornea so as to be used for drilling and cutting by the drill bit.

Referring to fig. 1 to 4, the present utility model proposes a pillow 20, the pillow 20 includes a main body 21, the main body 21 has an inner cavity (not labeled in the drawings), and an air hole 214 disposed on the outer wall of the main body 21 and communicating with the inner cavity; the middle part of body 21 upper surface is sunken to form a holding groove 213, the bottom of holding groove is adsorption part 22, adsorption part is used for adsorbing donor cornea, the inside sunken setting of adsorption part, adsorption part 22's surface is the arc and arranges to with the shape adaptation of donor cornea, adsorption part 22 with body 21 integrative injection moulding, adsorption part 22's middle part is provided with a intercommunication first suction hole 211 of inner chamber, and follows 6 ~ 9 second suction holes 212 of first suction hole 211 circumference evenly distributed.

The adsorption part 22 and the accommodating groove 213 at the periphery of the adsorption part can adopt the same-color structure or a double-color structure, and when the double-color structure is adopted, the adsorption part 22 and the accommodating groove 213 are convenient to distinguish.

Specifically, the outer wall of the body 21 is provided with air holes 214 communicating with the inner cavity, and the air holes 214 are provided on the peripheral wall of the body 21 in view of facilitating the drilling work. The air hole 214 is mainly used for connecting an external air control device (not labeled in the figure), and in this embodiment, the air control device comprises an injector, a spring sleeved on a push rod of the injector and a conduit communicated with an air outlet of the injector. One end of a spring sleeved on the push rod of the injector is abutted against the push head of the push rod, and the other end is abutted against the head of the needle cylinder. When the push rod is pushed into the needle cylinder, the spring is deformed, and then the push rod is pushed back by the restoring force. And one end of the conduit is connected with the air outlet of the needle cylinder, and the other end is communicated with the air hole 214 on the body 21. Therefore, when the syringe is inflated, the inner cavity of the corresponding body 21 is in an air-in state, and when the push rod is pulled out by the spring rebound, the inner cavity of the corresponding body 21 is in an air-out state.

According to the pillow seat, the pillow seat body 21 and the adsorption part 22 are integrally injection molded, so that split assembly of the pillow seat body 21 and the adsorption part 22 is avoided, assembly errors are reduced, the shape of a cut cornea is more regular, and problems of astigmatism, implant edema and the like of a patient after operation are avoided; simultaneously, the absorption portion 22 is concavely arranged inwards, and the surface of the absorption portion 22 is in arc arrangement, so that the absorption portion 22 is more suitable for the shape of a cornea, and the cornea cutting effect is better.

The accommodating groove 213 provided on the upper surface of the body 21 is mainly used for accommodating the donor cornea to be drilled. The middle of the bottom surface of the accommodating groove 213 is provided with a first suction hole 211, and the first suction hole 211 mainly performs a positioning function on the donor cornea. Specifically, because of the difference in thickness between the central region (thickness of 0.50mm to 0.57 mm) and the peripheral region (thickness of about 1 mm) of the donor cornea, the physician selects the appropriate drilled region and marks the center of the selected donor cornea region, wherein the donor cornea is marked to align with the first suction hole 211 at the bottom of the receiving groove 213. The second suction hole 212 is mainly used for adsorbing the whole donor cornea after the donor cornea is initially positioned in the first suction hole 211. Of course, in the present embodiment, the number of the second suction holes 212 is set to 6-8, so as to achieve that the donor cornea is uniformly sucked at a plurality of positions, so that the donor cornea is sucked in the accommodating groove 213 more smoothly, and the to-be-drilled knife 30 performs drilling. Preferably, the number of the second suction holes 212 is set to 8.

In a specific operation, the edge of the second suction hole 212 is coated with gentian violet by a marker pen (gentian violet marker pen), then the push rod of the injector is pushed, meanwhile, the donor cornea is laid in the accommodating groove 213 (the prefabricated mark on the donor cornea is aligned with the first suction hole 211), the push rod is released when the surface layer of the donor cornea is attached to the bottom of the accommodating groove 213, and then the push rod has external pumping power under the restoring force of the spring, so that the whole inner cavity forms a negative pressure cavity, and the donor cornea is firmly adsorbed in the accommodating groove 213 to wait for drilling and cutting. It should be noted here that gentian violet on the second suction port 212 marks the edge of the drilled cornea for later corneal stitching.

According to the technical scheme of the utility model, an inner cavity is arranged on the body 21 of the pillow base 20, and then air inlet and air exhaust of the inner cavity are carried out through the air holes 214 communicated with the inner cavity. The upper surface of the body 21 is recessed with a receiving groove 213 for receiving a donor cornea, and the bottom surface of the receiving groove 213 is provided with a first suction hole 211 and a second suction hole 212 communicating with the inner cavity. When the inner cavity is in a degassing state, the donor cornea placed in the accommodating groove 213 is adsorbed and positioned by the first suction holes 211, and then is adsorbed and fixed by 6-9 second suction holes 212. The present utility model employs a plurality of (6-9) second suction holes 212 to adsorb the donor cornea, so as to more flatly adsorb the donor cornea in the accommodating groove 213 for the drill 30 to drill, thereby effectively preventing the problem of uneven edge of the donor cornea after drilling due to wrinkles generated when the donor cornea is adsorbed.

In another embodiment, the second suction hole 211 described with reference to fig. 3 includes 1 first sub-suction hole 212a and the remaining second sub-suction holes 212b; the shape of the first sub-suction holes 212a is different from the shape of the second sub-suction holes 212 b. It will be appreciated that the first sub-suction hole 212a is provided in a different shape, so that it is intended that the first sub-suction hole 212a can be used as a starting point of stitching or a mark point for direction (positioning) of a implant during the later-stage stitching of the cornea, so that a doctor can clearly know that the cornea has been stitched for one turn or stitching according to a specified direction. Preferably, the first sub-suction hole 212a has a triangular shape, so that one corner of the triangle can be used as an indicator needle, and a doctor can more accurately find a suturing starting point or suture according to a specified direction.

Further, the second sub-suction holes 212b are circular holes or oval holes. It can be appreciated that the edges of the circular or oval holes are over-curved, and no water caltrop is present, so that the donor cornea can more closely cover the second sub-suction hole 212b, preventing the inner cavity from leaking. Moreover, the circular holes or the oval holes with the over-arranged edge arc shape can also avoid deeper resting marks and the like on the donor cornea epithelium.

In yet another embodiment, referring to fig. 1, the accommodating groove 213 is tapered from top to bottom, and the groove wall is provided with an arc surface. It will be appreciated that, considering the curved configuration of the cornea, for better placement of the donor cornea and reduced damage to the donor cornea, the receiving groove 213 is tapered from top to bottom relative to the shape of the donor cornea, and the groove wall is curved.

The application also proposes a corneal trephine 10, the corneal trephine 10 includes a drill bit 30 and the pillow base 20 according to any one of the foregoing embodiments, the drill bit 30 includes a base plate 31, a cutter 32 disposed on the lower surface of the base plate 31, and guide posts 33 circumferentially distributed along the cutter 32; the upper surface of the pillow 20 is provided with insertion holes 24 for matching with the guide posts 33, and the insertion holes 24 are uniformly distributed along the periphery of the accommodating groove 213.

Specifically, the cutter 32 is a hollow cylindrical cutter, and when the cornea is drilled, the donor cornea is first sucked into the accommodating groove 213 of the pillow base 20, then the guide posts 33 (3 guide posts in this embodiment) of the drill 30 are inserted into the insertion holes 24, and pressure is applied downward to cut the cutter 32 through the donor cornea until the donor cornea is pressed against the groove surface of the accommodating groove 213. It will be appreciated that the projected area of the drill 30 is slightly larger than the area enclosed by the second suction opening 212 to ensure that the marks on the donor cornea after drilling (gentian violet marks) remain. After cutting through the donor cornea, the cutter 32 is removed, and then the injector push rod is pushed to inflate the cavity of the pillow 20, so that the donor cornea is separated from the groove surface of the accommodating groove 213, and then the donor cornea is removed.

In another embodiment, referring to fig. 4, a plurality of hand-held holes 31a (3 in this embodiment) are formed through the base plate 31 in the up-down direction, and the hand-held holes 31a are uniformly distributed on the outer periphery of the cutter 32 and are spaced apart from the guide posts 33. It will be appreciated that the hand-held aperture 31a is provided to facilitate the removal of the drill bit 30 by a practitioner when using the drill bit 30.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 present utility model. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (9)

1. The pillow seat of the cornea trephine comprises a body and is characterized in that the body is provided with an inner cavity and an air hole which is arranged on the outer wall of the body and is communicated with the inner cavity; the middle part of body upper surface is sunken to form a holding groove, the bottom of holding groove is the adsorption part, the adsorption part is used for adsorbing donor cornea, the adsorption part is inwards sunken to be set up, the surface of adsorption part is the arc and arranges to with the shape adaptation of donor cornea, the adsorption part with body integral injection moulding, the middle part of adsorption part is provided with a intercommunication the first suction port of inner chamber, and along a plurality of second suction ports of first suction port circumference evenly distributed.

2. A pillow block for a corneal trephine as claimed in claim 1 wherein the number of said second suction holes is 8.

3. A pillow block for a corneal trephine as claimed in claim 1 wherein said second suction holes comprise 1 first sub-suction hole and the remaining second sub-suction holes; the shape of the first sub-suction holes is different from the shape of the second sub-suction holes.

4. A pillow block for a corneal trephine as claimed in claim 3 wherein said first sub-suction orifice is triangular in shape.

5. A pillow block for a corneal trephine as claimed in claim 3 or 4 wherein said second sub-suction aperture is a circular aperture or an oval aperture.

6. The pillow base of claim 1 wherein the receiving groove tapers from top to bottom and the groove wall is curved.

7. A pillow block for a corneal trephine as claimed in claim 1 wherein said air holes are provided in a peripheral wall of said body.

8. A corneal trephine, characterized by comprising a drill bit and a pillow seat according to any one of claims 1 to 7, wherein the drill bit comprises a base plate, a cutter arranged on the lower surface of the base plate and guide posts distributed along the circumferential direction of the cutter;

the upper surface of pillow seat is provided with the jack that is used for cooperating the guide post, the jack is evenly distributed along the periphery of storage tank.

9. The corneal trephine of claim 8, wherein a plurality of hand-held holes are formed through the base plate in an up-down direction, the hand-held holes being uniformly distributed on an outer periphery of the cutter and spaced apart from the guide post.