CN214318161U

CN214318161U - Noninvasive eyeball fixator

Info

Publication number: CN214318161U
Application number: CN202122072904.3U
Authority: CN
Inventors: 张智科; 张水馨
Original assignee: China Japan Friendship Hospital
Current assignee: China Japan Friendship Hospital
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-10-01
Anticipated expiration: 2031-08-31

Abstract

The utility model relates to a noninvasive eyeball fixer, which comprises an eyeball fixer; the eyeball fixer comprises a fixer head and a negative pressure device, and the fixer head and the negative pressure device are connected through a connecting pipe; the first surface of the fixer head is a surface close to the operation area and is provided with an arc shape consistent with the radian of the edge of the cornea, so that the operation area can be fully exposed without shielding an operation field; the second surface of the fixator head is an eyeball contact surface which is an arc surface consistent with the radian of an eyeball; arranging a negative pressure opening on the eyeball contact surface; a negative pressure channel communicated with the negative pressure opening is arranged in the fixator head; the negative pressure device is connected with the fixator head by the connecting pipe, the eyeball contact surface of the fixator head is contacted with the pericorneal eyeball tissue, negative pressure is formed in the U-shaped part inside the fixator head after the negative pressure is connected, the eyeball tissue is sucked, and the fixator head is controlled to play a role in fixation.

Description

Noninvasive eyeball fixator

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to is a noninvasive eyeball fixer.

Background

Femtosecond laser small incision corneal stroma lens extraction (whole femtosecond operation, SMILE) is to cut a lens in the corneal stroma by femtosecond and extract the lens from the micro incision at the edge of the cornea, so as to achieve the purposes of reducing corneal refractive power and correcting myopia and astigmatism. In the whole femtosecond operation process, the main difficulty of the operation is the separation and the taking out of the corneal stroma lens, the corneal lens and the corneal cap reserved above the corneal lens are very thin, the lens is possibly torn and difficult to take out, the corneal cap is perforated and other complications can be caused by slight deviation of the action, and the operation needs better hand feeling and rich experience of an operation doctor.

At present, 2 fixing modes are mainly adopted in the operation process, and 1, the limbus conjunctiva is clamped by using a microsurgery temporal clamp. Usually, a left hand is used to hold a conjunctiva from 1 point to 2 points by using a microscopic temple, and the movement of eyeballs is limited by the held conjunctiva, so that a fixing effect is achieved; 2. the cotton swab is used to abut against the conjunctiva near the corneal limbus to limit the movement of the eyeball by friction, so as to play a role in fixation. However, the above methods have their disadvantages, and the use of the microsurgical temporal fixation has the following problems: (1) the microscopic temples can only fix tissues of one point of the eyeball, and the fixing effect is poor. When the lens is separated left and right, the eyeball can still move twice at the fixed point, and the eyeball is pushed aside to influence the visual field and the operation of the right hand; (2) the micro forceps fixes the local conjunctiva to be torn with larger force, which is easy to cause the conjunctiva to be torn; the tip of the micro-forceps is provided with occluded sharp teeth, which has great damage to tissues and is easy to cause bleeding when being clamped to blood vessels. (3) When the micro-forceps is held by the left hand for fixation, the micro-forceps needs to be continuously pinched, and the requirement on the matching of the left hand and the right hand is high; the beginner can disturb the right hand by over-force, the action is stiff, the conjunctiva is easy to loosen by over-force, and the two hands can be well matched by a longer learning curve. The following problems occur in fixing with a cotton swab: (1) the cotton swab fixation depends on friction force, the fixation force is weak, and the eyeball cannot be effectively fixed if the eyeball of the patient suddenly moves or the right hand action amplitude is large; (2) the friction force for fixing the cotton swab is difficult to master, the cotton swab cannot be fixed when being pressed too lightly, and eyeball deformation and even eyeball injury are caused when the cotton swab is pressed too heavily. Therefore, there is a need for a non-invasive ocular fixer using negative pressure suction to effectively overcome the above problems.

To the above problem, the utility model provides a there is not eyeball fixer of wound.

Disclosure of Invention

In order to overcome the problem that proposes among the background art, the utility model provides a there is not eyeball fixer of wound.

A noninvasive eyeball fixer, which comprises an eyeball fixer; the eyeball fixer comprises a fixer head and a negative pressure device, and the fixer head and the negative pressure device are connected through a connecting pipe; the first surface of the fixer head is a surface close to the operation area and is provided with an arc shape consistent with the radian of the edge of the cornea, so that the operation area can be fully exposed without shielding an operation field; the second surface of the fixator head is an eyeball contact surface which is an arc surface consistent with the radian of an eyeball; arranging a negative pressure opening on the eyeball contact surface; a negative pressure channel communicated with the negative pressure opening is arranged in the fixator head; the negative pressure device is connected with the fixator head by the connecting pipe, the eyeball contact surface of the fixator head is contacted with the pericorneal eyeball tissue, negative pressure is formed in the U-shaped part inside the fixator head after the negative pressure is connected, the eyeball tissue is sucked, and the fixator head is controlled to play a role in fixation.

Preferably, a negative pressure connecting port communicated with the connecting pipe is arranged on the third surface of the fixator head, and the negative pressure connecting port is communicated with a negative pressure channel inside the fixator head; the tissue which is not easy to move beside the cornea is adsorbed by negative pressure, so that the eyeball is fixed.

Preferably, at least one negative pressure opening is arranged, and the number of the negative pressure channels is the same as that of the negative pressure openings; the quantity of negative pressure opening is preferred to be set up 6 to guarantee that fixing device head and eyeball contact occasionally great area of contact, will fix the strength dispersion of eyeball, avoid the damage to local tissue, can also effectively guarantee stability.

Preferably, a negative pressure suction cup is arranged at the negative pressure opening, so that the comfort of eyes during eyeball fixation is guaranteed.

Preferably, the radian of the edge of the first surface of the fixer head exceeds the circumference of the cornea 1/4, and the radian arrangement can effectively fix the eyeball in X, Y, Z three axial directions, so that the problem that the eyeball moves along with the movement of the instrument when the eyeball is fixed by the micro forceps in a single point manner is avoided.

Preferably, the eyeball contact surface is provided with anti-slip lines at the positions where the negative pressure openings are not arranged, so that the friction between the eyeball contact surface and the eyeball is increased, and the stability is improved.

Preferably, a holding handle is arranged on the third surface of the fixator head, and the position of the fixator head is fixed through the holding handle. The third surface and the eyeball contact surface, namely the second surface are mutually vertical; the first face and the eyeball-contacting face, i.e., the second face, are perpendicular to each other.

Preferably, the holding handle and the fixer head are integrally connected, the connection mode is directly used, and the learning curve is short.

Preferably, the holding handle and the fixer head are movably connected through a connecting piece; the function of adjusting the angle between the holding handle and the fixer head can be realized through the arrangement of the connecting piece, and the posture requirement of clinical medical staff during operation is effectively met.

Preferably, the connecting piece comprises a movable plate arranged at the first end of the holding handle and a containing groove arranged at the outer side of the fixer head and used for containing the movable plate; a connecting rod penetrating through the movable plate and the fixer heads at the two sides of the accommodating groove is additionally arranged; the movable plate is connected with the fixer head through the connecting rod, and when the holding handle is operated, the movable plate rotates in the accommodating groove, so that the function of changing the angle between the holding handle and the fixer head is realized. The connecting rod, the movable plate and the fixer head have friction force, the movable plate rotates in the accommodating groove when external force is applied, and the movable plate does not rotate relative to the accommodating groove when no external force is applied.

Preferably, the movable plate is a circular plate, and the accommodating groove is an arc-shaped groove; this kind of setting can effectively guarantee the rotation of fly leaf in the holding tank.

Preferably, the second end of the holding handle is provided with a structure convenient for holding by hand, so that the comfort in operation is ensured.

The utility model has the advantages that: 1. the negative pressure suction mode is used for fixing the eyeballs, so that the eyeball-fixing device has strong grasping force and good fixing effect, can fully limit the movement of the eyeballs, keeps the good positions of the eyeballs, avoids the influence of sudden eyeball movement of a patient on the operation, and effectively avoids the defect of mechanical clamping of microscopic forceps or the limitation of friction force of cotton swabs on the eyeballs; 2. the edge of the first surface of the fixator head is in an arc shape exceeding the circumference of the cornea 1/4, and the eyeball contact surface is provided with the negative pressure opening and the negative pressure suction cup, so that the fixator head has a larger contact area with the eyeball tissue beside the cornea, and can be effectively fixed in three axial directions of X, Y, Z, and the movement of the eyeball along with the movement of the instrument when the eyeball is fixed by the micro forceps in a single point manner is avoided; the force for fixing the eyeballs can be dispersed, and the damage to local tissues is avoided; 3. the left hand can hold the handle and open the negative pressure device to fix the eyeball, so the hand is easy to get on, and the learning curve is short. The scheme can ensure that the eyeball has a good fixing effect, reduces the damage to eyeball tissues, reduces the occurrence probability of conjunctiva tearing and bleeding, is easy to operate, has short learning curve and low manufacturing cost, and is worthy of popularization.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention when viewed from the eyeball contact surface;

fig. 2 is a schematic view of the overall structure of the present invention when viewed from the opposite side of the eyeball contact surface;

FIG. 3 is a perspective view of the fastener head and the grip handle (integrally connected to the fastener head and the grip handle) according to the present invention;

FIG. 4 is an enlarged schematic view of the fastener head and the grip handle (the fastener head and the grip handle are movably connected) according to the present invention;

FIG. 5 is an enlarged sectional view of the fastener head and the grip handle (the fastener head and the grip handle are movably connected) according to the present invention;

FIG. 6 is an enlarged perspective view of the connector of the present invention;

in the figure, 1, a holder head; 11. an eyeball contact surface; 12. opening a negative pressure; 13. a negative pressure channel; 14. a negative pressure connector; 15. accommodating grooves; 16. a connecting rod; 17. a first side; 18. a third surface; 2. a negative pressure device; 3. a connecting pipe; 4. a grip handle; 41. a movable plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the disclosure in the specification. The utility model discloses can also implement or use through other different concrete implementation manners, under the condition of conflict-free, the characteristics in following embodiment and the embodiment can make up each other, based on the embodiment in the utility model, all other embodiments that the ordinary skilled in the art obtained under the prerequisite of not making creative work all belong to the scope of protection of the utility model.

Example 1

Referring to fig. 1-3, a non-invasive eyeball fixer in the present embodiment includes an eyeball fixer; the eyeball fixer comprises a fixer head 1 and a negative pressure device 2, wherein the fixer head 1 is connected with the negative pressure device 2 through a connecting pipe 3; the first surface 17 of the fixator head 1 is a surface close to an operation area and is arranged into an arc shape consistent with the radian of the edge of a cornea, so that the operation area can be fully exposed without shielding an operation field; the second surface of the fixator head 1 is an eyeball contact surface 11, and the eyeball contact surface 11 is an arc surface consistent with the radian of an eyeball; a negative pressure opening 12 is arranged on the eyeball contact surface 11; a negative pressure channel 13 communicated with the negative pressure opening 12 is arranged in the fixer head 1; the negative pressure device 2 is connected with the fixator head 1 by the connecting pipe 3, the eyeball contact surface 11 of the fixator head 1 is contacted with the paracorneal eyeball tissue, the negative pressure is communicated, the U-shaped negative pressure is formed in the fixator head 1, the eyeball tissue is sucked, and the fixator head 1 is controlled to play a fixing role.

A negative pressure connecting port 14 communicated with the connecting pipe 3 is arranged on the third surface 18 of the fixator head 1, and the negative pressure connecting port 14 is communicated with the negative pressure channel 13 in the fixator head 1; the tissue which is not easy to move beside the cornea is adsorbed by negative pressure, so that the eyeball is fixed. The negative pressure device 2 is provided as a negative pressure pump.

At least one negative pressure opening 12 is arranged, and the number of the negative pressure channels 13 is the same as that of the negative pressure openings 12; the number of the negative pressure openings 12 is preferably 6, so as to ensure that the contact area between the fixator head 1 and the eyeball is larger, the force for fixing the eyeball is dispersed, the damage to local tissues is avoided, and the stability can be effectively ensured.

The radian of the edge of the first surface 17 of the fixator head 1 exceeds the circumference of the cornea 1/4, and the radian arrangement can effectively fix the eyeball in X, Y, Z three-axis directions, so that the problem that the eyeball moves along with the movement of an instrument when the eyeball is fixed by the micro forceps in a single point manner is avoided.

The grip handle 4 is provided on the third surface 18 of the anchor head 1, and the position of the anchor head 1 is fixed by the grip handle 4. The third surface 18 and the eyeball contact surface 11, namely the second surface are perpendicular to each other; the first face 17 and the eye contact face 11, i.e. the second face, are perpendicular to each other; the second end of the holding handle 4 is designed to be convenient for holding, so that the comfort in operation is ensured. The holding handle 4 and the fixer head 1 are connected integrally, the connection mode is direct to the upper hand, and the learning curve is short.

Example 2

Referring to fig. 4-6, the technical difference between this embodiment and embodiment 1 is the connection manner between the grip handle 4 and the fastener head 1, and the specific technical features are as follows: the holding handle 4 is movably connected with the fixer head 1 through a connecting piece; the function of adjusting the angle between the holding handle 4 and the fixer head 1 can be realized through the arrangement of the connecting piece, and the posture requirement of clinical medical care personnel during operation is effectively met.

The connecting piece comprises a movable plate 41 arranged at the first end of the holding handle 4 and a receiving groove 15 arranged outside the fixer head 1 for receiving the movable plate 41; a connecting rod 16 penetrating the movable plate 41 and the fixer heads 1 at two sides of the accommodating groove 15 is additionally arranged; the movable plate 41 is connected to the fastener head 1 by the connecting rod 16, and the movable plate 41 rotates inside the receiving groove 15 when the grip handle 4 is operated, thereby achieving a function of changing an angle between the grip handle 4 and the fastener head 1. Friction force is generated among the connecting rod 16, the movable plate 41 and the fixer head 1, the movable plate 41 rotates in the accommodating groove 15 when external force is applied, and the movable plate 41 does not rotate relative to the accommodating groove 15 when no external force is applied. The movable plate 41 is a circular plate, and the receiving groove 15 is an arc-shaped groove; this arrangement can effectively ensure the rotation of the movable plate 41 within the receiving groove 15.

Example 3

Referring to fig. 1 to 6, the present embodiment adds the following technical features on the basis of embodiment 1 or 2: the negative pressure opening 12 is provided with a negative pressure suction cup to ensure the comfort of the eyes when the eyeballs are fixed. The eyeball contact surface 11 is provided with anti-slip lines at the positions where the negative pressure openings 12 are not arranged, so that the friction between the eyeball contact surface 11 and the eyeball is increased, and the stability is improved.

When the fixator is used, a medical worker directly holds the holding handle 4 by a hand and places the fixator head 1 on the eyes, wherein the eyeball contact surface 11 of the fixator head 1 is in contact with the paracorneal eyeball tissue, the first surface 17 of the fixator head 1 is tightly attached to the edge of a cornea, negative pressure is communicated, the tissue which is not easy to move beside the cornea is adsorbed, and the eyeball is controlled.

The above description of the embodiments is only intended to illustrate the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several modifications can be made to the present invention, and these modifications will fall within the protection scope of the claims of the present invention.

Claims

1. A noninvasive eyeball fixer comprises an eyeball fixer and is characterized in that the eyeball fixer comprises a fixer head and a negative pressure device, and the fixer head and the negative pressure device are connected through a connecting pipe; the first surface of the fixer head is a surface close to the operation area and is provided with an arc shape consistent with the radian of the edge of the cornea, so that the operation area can be fully exposed without shielding an operation field; the second surface of the fixator head is an eyeball contact surface which is an arc surface consistent with the radian of an eyeball; arranging a negative pressure opening on the eyeball contact surface; and a negative pressure channel communicated with the negative pressure opening is arranged in the fixator head.

2. The non-invasive eyeball fixer according to claim 1, wherein a negative pressure connection port communicating with the connection pipe is provided on the third surface of the fixer head, and the negative pressure connection port communicates with the negative pressure channel inside the fixer head.

3. The non-invasive eyeball fixer according to claim 1, wherein at least one negative pressure opening is provided, and the number of negative pressure passages and the number of negative pressure openings are the same.

4. The non-invasive eyeball fixator of claim 3, wherein a negative pressure suction cup is provided at the negative pressure opening.

5. The non-invasive eyeball holder as claimed in claim 1, wherein the arc of the edge of the first face of the holder head exceeds 1/4 circumference of cornea.

6. The non-invasive eyeball fixator of claim 1, wherein anti-slip lines are provided at positions where no negative pressure opening is provided on the eyeball-contacting surface.

7. The non-invasive eyeball fixator according to any one of claims 1 to 6, wherein a holding handle is arranged on the third face of the fixator head.

8. The non-invasive eye holder according to claim 7, wherein the grip handle and the holder head are integrally connected.

9. The non-invasive eye holder according to claim 7, wherein the grip handle and the holder head are movably connected by a connecting member.

10. The non-invasive eyeball holder of claim 9, wherein the connecting member comprises a movable plate provided at the first end of the grip handle, and a receiving groove provided at the outside of the holder head for receiving the movable plate; and a connecting rod penetrating through the movable plate and the fixer heads on the two sides of the accommodating groove is additionally arranged.