CN109717946B

CN109717946B - Holder for retina nail

Info

Publication number: CN109717946B
Application number: CN201910104268.2A
Authority: CN
Inventors: 戴聿昌; 庞长林; 迪迪埃·萨根; 王煜; 张旭; 潘伟维
Original assignee: Intellimicro Medical Co ltd
Current assignee: Intellimicro Medical Co ltd
Priority date: 2019-02-01
Filing date: 2019-02-01
Publication date: 2024-03-26
Anticipated expiration: 2039-02-01
Also published as: CN109717946A

Abstract

The invention discloses a holder of retina nail, the holder includes: an outer tube; the inner tube can axially move relative to the outer tube, and the axial front end of the inner tube extending out of the outer tube is set as a nail holding end; the transmission piece is used for pushing the inner pipe to move forwards; the device comprises an electromagnetic coil and a heat conducting piece, wherein the heat conducting piece conducts heat under the electromagnetic action of the electromagnetic coil so as to be used for solidifying bleeding caused by the penetration of a retina nail into the eyeball wall, the electromagnetic coil is wound on an outer tube, and the heat conducting piece is arranged on the nail holding end of an inner tube; or the electromagnetic coil is wound on the inner tube, and the heat conducting piece is arranged at the axial front end of the outer tube. Thus, the heat conductive member can exert its coagulation effect, and bleeding of the capillary vessel can be directly coagulated. This way is different from the traditional way of stopping bleeding by transfusion and stopping bleeding by an additional tool, the way can not transmit pressure to retina, the smooth operation can be ensured, and the structure of the clamp is easy to manufacture and implement.

Description

Holder for retina nail

Technical Field

The invention relates to the technical field of ophthalmic nerve stimulators, in particular to a clamp holder for retina nails.

Background

Visual prostheses are implantable medical devices that are intended to assist patients with retinal or other visual organ lesions in regaining brightness and vision. The formation of normal vision is the transformation of light stimuli into electrical signals by photoreceptor cells (cones and rods) on the retina, which, after each layer of cells (horizontal cells, bipolar cells, ganglion cells, etc.) encodes, transmit nerve impulses to the visual cortex. One visual prosthesis design currently in common use is to implant microelectrode implants into the retinal surface (epiretinal) to help restore vision from external retinal degenerative diseases such as Retinitis Pigmentosa (RP) and age-related macular degeneration (AMD), creating an illusion of vision.

In the case of performing a retinal prosthesis implantation operation, the fixation of the microelectrode to the surface of the retina by means of microelectrode retinal nails is an extremely important step. The fixed posture of the microelectrode directly influences the visual perception effect of the implant. The microelectrode retina nail penetrates through the mounting hole on the microelectrode and then penetrates into the retina, choroid and sclera of the eyeball in sequence. This puncturing action is extremely prone to bleeding from retinal capillary rupture, especially in patients with age-related macular degeneration (AMD).

In the related art, one common hemostasis mode is hemostasis by the pressure of an infusion bottle. The infusion bottle maintains the eye shape during surgery by providing liquid to the region of the vitreous body within the eye. For hemostasis purposes, infusion bottles are typically placed in a high position to provide pressure to prevent blood from escaping from the blood vessel. However, the liquid in the infusion bottle can also transmit pressure to retina, so that the retinal cells are easy to shrink and necrose due to improper control.

Another hemostasis mode is to extend an additional hemostasis device into the eyeball to stop bleeding, and because more instruments are originally used during implantation surgery, the operation in a limited intraocular space is very complicated when the additional hemostasis device is added, the surgery time is prolonged, and higher challenges are presented to doctors.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to propose a holder for retinal nails that is simple and safe to use and does not cause damage to retinal cells.

The holder of retinal nails according to the present invention includes: an outer tube, in which an axial hollow channel is formed; the inner tube is arranged in the hollow channel and can axially move relative to the outer tube, and the axial front end of the inner tube extending out of the outer tube is set as a nail holding end; the transmission piece is used for pushing the inner pipe to move forwards; the reset piece is used for pushing the inner tube to reset backwards; the heat conduction piece conducts heat under the electromagnetic action of the electromagnetic coil so as to be used for solidifying bleeding caused by the penetration of the retinal nail into the eyeball wall, wherein the electromagnetic coil is wound on the outer tube, and the heat conduction piece is arranged on the nail holding end of the inner tube; or the electromagnetic coil is wound on the inner tube, and the heat conducting piece is arranged at the front end of the outer tube in the axial direction.

Therefore, after the retinal nail pierces the eyeball wall, retinal capillaries are broken to bleed, and at the moment, the heat conducting member can play a role in coagulation, so that the bleeding of the capillaries can be directly coagulated. This way is different from the traditional way of stopping bleeding by transfusion and stopping bleeding by an additional tool, and the way can not transmit pressure to retina, so that necrosis of retina cells in operation can be avoided, smooth operation can be ensured, and the structure of the clamp is easy to manufacture and implement.

In some examples of the present invention, the electromagnetic coil is further connected to a foot switch for controlling on/off of the electromagnetic coil.

In some examples of the invention, the electromagnetic coil is connected with a regulating device for regulating the output power.

In some examples of the invention, the electromagnetic coil is helical on the outer circumference of the outer tube or the inner tube.

In some examples of the present invention, the electromagnetic coil is connected with a wire, and a nanowire groove is arranged on the periphery of the outer tube or the inner tube, and the wire is embedded in the nanowire groove.

In some examples of the invention, the cross section of the nanowire groove is U-shaped, and adhesive is arranged between the wire and the nanowire groove.

In some examples of the invention, the holder further comprises: the pressing assembly is arranged at the axial rear end of the outer tube; the transmission member includes: the first sliding block is arranged at the axial rear end of the inner tube, the first sliding block can be axially and slidably arranged in the outer tube, and the reset piece is stopped between the outer tube and the first sliding block; the second sliding block is abutted against the axial rear end of the first sliding block, and the pressing component is abutted against the second sliding block and drives the second sliding block to move forwards in a pressing mode.

In some examples of the present invention, a wire is connected to the electromagnetic coil, and the electromagnetic coil is wound on the outer circumference of the inner tube; the first sliding block is provided with a first axial hole, the second sliding block is provided with a second axial hole, the first axial hole is communicated with the second axial hole, and the wire sequentially passes through the first axial hole, the second axial hole and the pressing component from the inner tube and is connected with an outer joint.

In some examples of the present invention, the outer tube and the pressing component are detachably connected, the wire is provided with a detachable joint in the first axial hole or the second axial hole, the inner tube and the first sliding block are in a split structure, the axial rear end of the inner tube is provided with a connecting plate, and the connecting plate is in butt joint with the axial front end of the first sliding block.

In some examples of the invention, the staple holding end is configured in a column shape, the staple holding end being provided with a staple holding hole; or the staple holding end comprises: the first clamping head and the second clamping head are provided with corresponding clamping holes for jointly clamping the end parts of the retina nails.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a holder for a retinal nail and a retinal nail according to one embodiment of the present invention;

FIG. 2 is a schematic view of a partial structure of the holder and retinal nail shown in FIG. 1;

FIG. 3 is a schematic view of the staple holding end of the holder shown in FIG. 1 extending beyond the outer tube;

FIG. 4 is a cross-sectional view of the holder shown in FIG. 1;

FIG. 5 is a schematic view showing a partial structure in which the nail holding end of the holder of the retinal nail protrudes from the outer tube according to another embodiment of the present invention;

FIG. 6 is a schematic view of the holder shown in FIG. 1 securing microelectrodes to the retina and sclera by retinal nails;

FIG. 7 is a schematic view of a holder for a retinal nail and a retinal nail according to yet another embodiment of the present invention;

FIG. 8 is a schematic view of a partial structure of the holder and retinal nail shown in FIG. 7;

FIG. 9 is a schematic view of the staple holding end of the holder shown in FIG. 7 extending beyond the outer tube;

FIG. 10 is a cross-sectional view of the holder shown in FIG. 7;

FIG. 11 is a cross-sectional view of the inner tube and the first slider;

FIG. 12 is a cross-sectional view of a pressing assembly and a second slider according to yet another embodiment of the present invention;

FIG. 13 is a schematic view of the holder shown in FIG. 7 securing microelectrodes to the retina and sclera by retinal nails;

fig. 14 is a schematic diagram of the operation of the holder of the retinal nail according to an embodiment of the present invention;

fig. 15 is a view showing an operation state of the holder of the retinal nail according to the embodiment of the present invention.

Reference numerals:

a holder 1; a retinal nail 2; microelectrodes 3; a sclera 4;

an outer tube 10; a hollow passage 11;

an inner tube 20; a staple holding end 21; a staple holding hole 211; a first collet 212; a second chuck 213; a connection plate 22;

a transmission member 30; a first slider 31; a first axial bore 311; a second slider 32; a second axial hole 321; a guide block 33; a drive wheel 34; a mating block 35;

a reset member 40;

a coagulation device 50; an electromagnetic coil 51; a heat conductive member 52; a wire 53; an outer joint 54; disassembling the joint 55;

an adjusting device 60; a power supply 70; a pressing assembly 80; a foot switch 90; grip handle 100; a clamping plate 101; the handle 110 is pressed.

Detailed Description

Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.

A holder 1 for a retinal nail 2 according to an embodiment of the present invention is described below with reference to fig. 1 to 15, the holder 1 being for holding the retinal nail 2, the retinal nail 2 being for fixing a retinal prosthetic microelectrode 3, as shown in fig. 6 and 13, the retinal nail 2 being capable of fixing the retinal prosthetic microelectrode 3 to the retina and sclera 4 of an eyeball.

The clamper 1 according to the embodiment of the present invention includes: an outer tube 10, an inner tube 20, a transmission 30 and a coagulation device 50. The outer tube 10 is formed with an axial hollow passage 11, the inner tube 20 is disposed in the hollow passage 11, and the inner tube 20 is axially movable relative to the outer tube 10. Wherein the axial direction is the front-rear direction as shown in fig. 4 and 10.

The axial front end of the inner tube 20 extending out of the outer tube 10 is provided as a holding end 21, and the holding end 21 is such that the tip thereof faces the retinal surface when the retinal nail 2 is held. It will be appreciated that the end 21 may be adapted to perform the insertion or removal of the retinal nail 2 as the inner tube 20 is moved forward relative to the outer tube 10; when the inner tube 20 moves backward relative to the outer tube 10, a part of the retinal nail 2 can be retracted into the outer tube 10, and the other part abuts against the end face of the outer tube 10, so that the limiting action of the retinal nail 2 can be completed.

The transmission member 30 serves to push the inner tube 20 forward. Wherein the holder 1 may comprise a restoring member 40, the restoring member 40 being adapted to push the inner tube 20 to restore backward. That is, the user can push the inner tube 20 to move forward by touching the transmission member 30, in which process the inner tube 20 can overcome the pressure of the restoring member 40, and the restoring member 40 can push the inner tube 20 to restore backward when the clamper 1 returns to the initial state. Through the mutual matching of the transmission piece 30 and the reset piece 40, the clamp holder 1 can effectively control the retina nails 2, and each action of the retina nails 2 is ensured to meet the requirements, so that the smooth operation can be ensured.

The coagulation device 50 includes: the electromagnetic coil 51 and the heat conducting piece 52, the electromagnetic coil 51 adopts an enameled wire structure, the internal lead can adopt gold, copper or aluminum, and polyurethane, silicone, polyimide, parylene and the like are wrapped outside. The heat conducting head 52 may be made of a magnetic conductive material, preferably an iron-based heat conducting head. The heat conductive member 52 conducts heat under the electromagnetic action of the electromagnetic coil 51 for coagulating bleeding caused by the retinal nail 2 penetrating the eyeball wall.

It can be understood that when the electromagnetic coil 51 is in the energized state, a magnetic field is generated around the electromagnetic coil 51, magnetic force lines can act on the surrounding inner tube 20, outer tube 10 and heat conducting member 52, so that the conversion from electric energy to heat energy can be completed, the heat conducting member 52 heats, the heat energy acts on the puncture site on retina, and the tissue and blood vessels can be dehydrated and contracted, and the blood vessel cavity becomes smaller or blocked; it can also coagulate and carbonize blood to form thrombus to stop bleeding.

This way is different from the traditional way of stopping bleeding by infusion and by additional tools, which does not transmit pressure to the retina, can avoid necrosis of retinal cells during surgery, can ensure smooth operation, and the structure of the holder 1 is easy to manufacture and implement.

According to the first embodiment of the present invention, as shown in fig. 1 to 4, an electromagnetic coil 51 is wound around the outer tube 10, and a heat conductive member 52 is provided on the grip end 21 of the inner tube 20. By winding the electromagnetic coil 51 around the outer tube 10, modifications to the inner tube 20 can be reduced, and the difficulty in arranging the electromagnetic coil 51 can be reduced. By providing the heat conductive member 52 on the nail holding end 21, the heat conductive member 52 can be made to generate heat better under electromagnetic action, and heat energy can be made to act on the puncture site. Wherein the free end of the heat conducting member 52 is provided with a protruding head, and the protruding head is shaped such that the heat conducting member can accurately find a bleeding position and conduct heat at the bleeding position, thereby coagulating blood.

Alternatively, as shown in fig. 4, the electromagnetic coil 51 is spiral on the outer circumference of the outer tube 10. The spiral electromagnetic coil 51 is easy to be disposed and a magnetic field can be formed around it more preferably. The central axis around which the electromagnetic coil 51 is wound is the axis of the inner tube 20, and the heat conducting member 52 is located at the axial front end of the electromagnetic coil 51, so that the magnetic force lines can better influence the heat generated by the heat conducting member 52.

Optionally, as shown in fig. 14, the coagulation device 50 is also connected to a foot switch 90 for controlling the on/off of the coagulation device. That is, the foot switch 90 is connected to a circuit for supplying power between the coagulation device 50 and the power supply 70. The foot switch 90 can be controlled by a doctor's foot, so that the doctor can perform the operation conveniently to a great extent.

Further, as shown in fig. 14 and 15, an adjusting device 60 for adjusting the output power is connected to the electromagnetic coil 51. The adjusting device 60 may employ a pulse width adjusting circuit, which can adjust the on time of an IGBT (insulated gate bipolar transistor) trigger circuit, and thus adjust the power and frequency of the electromagnetic coil 51, i.e., adjust the heating energy. Thus, by providing the adjusting device 60, the amount of heat generated by the heat conducting member 52 can be effectively adjusted, and the operation can be performed better according to the specific operation situation, so that the safety of the operation can be improved.

In some embodiments of the present invention, as shown in fig. 3 and 4, the electromagnetic coil 51 is connected with a wire 53, and a nanowire groove is provided on the outer circumference of the outer tube 10, and the wire 53 is embedded in the nanowire groove. The cross section of wire groove is the U-shaped, and wire groove is used for holding wire 53, and the cross section of wire 53 is generally circular, and the wire 53 of U-shaped puts into and fixes in can being convenient for, and wherein, wire 53 put into the wire inslot, still can bond in wire groove through bonding glue (like biocompatible silica gel) to can guarantee the fixed reliability of wire 53. In addition, such a structure can make the outer tube 10 as small as possible in size design, and can perform manufacturing processing, and can satisfy a surgical space in which an intraocular space is narrow.

The wire 53 is formed of a biocompatible metal surrounded by a biocompatible insulating material, which may be selected from PMMA, teflon, silicone, polyimide, parylene (particularly Parylene-C), and a metal material selected from Au, ag, pt, pd, ti or an alloy of any combination thereof. The materials of the outer tube 10 and the inner tube 20 are preferably pure titanium or titanium alloy to satisfy the strength and manufacturability requirements.

As shown in fig. 4, the gripper 1 further includes: and a pressing assembly 80, the pressing assembly 80 being disposed at an axial rear end of the outer tube 10, and the pressing assembly 80 driving the driving member 30 to move forward in a pressing manner.

Further, as shown in fig. 4, the pressing assembly 80 may include: the outer tube 10 comprises a holding handle 100 and a pressing handle 110, wherein the holding handle 100 is connected to the axial rear end of the outer tube 10, the pressing handle 110 is rotatably mounted on the holding handle 100, and the pressing handle 110 is provided with a shifting fork extending into the holding handle 100. It will be appreciated that the pressing handle 110 may control the movement of the fork inside the holding handle 100 in a pressing manner, a pivot axis is provided between the pressing handle 110 and the holding handle 100, and the holding handle 100 is provided with a through hole into which the fork extends. Wherein the grip handle 100 and the outer tube 10 may be fixedly coupled by bolts, for example, two radially extending bolts, such that the outer tube 10 and the grip handle 100 may be detached from each other. In addition, the outer tube 10 and the holding handle 100 can be detachably connected by a buckle or the like.

As shown in fig. 4, the transmission member 30 includes: a first slider 31 and a second slider 32, the first slider 31 being provided at the axial rear end of the inner tube 20, the first slider 31 being connected to the axial rear end of the inner tube 20, and the first slider 31 being axially slidably provided within the outer tube 10. Preferably, the first slider 31 is constructed as a unitary structure with the inner tube 20.

The return element 40 is stopped between the outer tube 10 and the first slider 31. Wherein, the inner wall of the outer tube 10 is provided with a stopping step, the reset member 40 may be a spring, the front end of the spring is stopped against the stopping step of the outer tube 10, the spring is further sleeved on the first sliding block 31, the first sliding block 31 is also provided with a stopping step, and the rear end of the spring is stopped against the stopping step. The second slider 32 is stopped between the fork and the axial rear end of the first slider 31 so that the pressing assembly 80 can push the second slider 32 forward.

As shown in fig. 4, a guide block 33 having a split structure is placed on the first slider 31, and a guide groove (not shown) is provided on the inner wall of the outer tube 10, and the guide block 33 is fitted in the guide groove. By the cooperation of the guide block 33 and the guide groove, the guiding function can be performed, the axial movement of the first slider 31 and the second slider 32 can be ensured, and the axial movement of the inner tube 20 can be ensured.

According to the second embodiment of the present invention, as shown in fig. 7 to 11, unlike the above-described embodiment, the electromagnetic coil 51 is wound around the inner tube 20, and the heat conductive member 52 is provided at the axial front end of the outer tube 10. The outer circumference of the inner tube 20 is provided with a spiral accommodating groove, and the electromagnetic coil 51 is wound in the accommodating groove. By reasonably arranging the electromagnetic coil 51 and the heat conducting member 52, the heat conducting member 52 can generate enough heat, so that the heat energy acts on the puncture site.

The electromagnetic coil 51 is connected with a wire 53, a wire groove is arranged on the periphery of the inner tube 20, and the wire 53 is embedded in the wire groove. The cross section of wire groove is the U-shaped, and wire groove is used for holding wire 53, and the cross section of wire 53 is generally circular, and the wire 53 of U-shaped puts into and fixes in can being convenient for, and wherein, wire 53 put into the wire inslot, still can bond in wire groove through bonding glue (like biocompatible silica gel) to can guarantee the fixed reliability of wire 53. In addition, such a structure can make the size design of the inner tube 20 as small as possible, and can perform manufacturing processing, and can satisfy a surgical space in which an intraocular space is narrow.

Further, as shown in fig. 10 and 11, the first slider 31 is hollow inside to form a first axial hole 311, and the axial rear end of the inner tube 20 is provided with a connection plate 22, which connection plate 22 is for interfacing with the first slider 31, and the connection plate 22 may be configured as a circular plate. By providing the connection plate 22, the fitting between the inner tube 20 and the first slider 31 can be effectively ensured. In addition, the connection plate 22 may also allow the inner diameter of the first axial hole 311 to be larger than the diameter of the inner tube 20, so that the first axial hole 311 has a larger accommodation space, may facilitate the introduction of the lead 53, and may facilitate the placement and connection operation of other components such as the disassembly joint 55. The connecting plate 22 and the first slider 31 are fixed by welding or bonding.

The second slider 32 is stopped between the fork and the axial rear end of the first slider 31, and the second slider 32 is hollow inside to form a second axial hole 321, and the second axial hole 321 communicates with the first axial hole 311. Wherein the wire 53 extends from the inner tube 20 into the first axial bore 311 and the second axial bore 321 and forms the outer joint 54 through the grip handle 100. The first axial hole 311 and the second axial hole 321 can accommodate the wire 53, thereby playing a role of hiding the wire 53, ensuring reasonable wiring of the holder 1 and avoiding intertwining between power supply lines. The external connector 54 is used to connect to a power supply circuit.

As shown in fig. 10, the lead 53 is provided with a disassembly joint 55 within the first axial hole 311 or the second axial hole 321. The disassembly joint 55 can facilitate disassembly and assembly between the outer tube 10 and the holding handle 100, and can facilitate subsequent cleaning and disinfection.

Alternatively, as shown in fig. 10, a guide block 33 of a split structure is placed on the first slider 31, and a guide groove (not shown) is provided on the inner wall of the outer tube 10, and the guide block 33 is fitted in the guide groove. By the cooperation of the guide block 33 and the guide groove, the guiding function can be performed, the axial movement of the first slider 31 and the second slider 32 can be ensured, and the axial movement of the inner tube 20 can be ensured.

According to the third embodiment of the present invention, unlike the first and second embodiments described above, the staple holder 21 includes, as shown in fig. 5: first collet 212 and second collet 213, first collet 212 and second collet 213 being provided with corresponding clamping holes to jointly clamp the ends of retinal nail 2. If the heat conductive member 52 is provided on the nail holding end 21 of the inner tube 20, it may be provided on the first chuck 212 or the second chuck 213. The heat conductive member 52 is not disposed so as to interfere with the retinal nail 2, so that the holder 1 can smoothly operate the retinal nail 2 for surgery.

According to the fourth embodiment of the present invention, unlike the first and second embodiments described above, as shown in fig. 12, the pressing assembly 80 may further include two opposite clamping plates 101, the front ends of the clamping plates 101 being opposite to each other with a gap therebetween, the driving wheels 34 being provided inside the two clamping plates 101, the second slider 32 being connected to the axial rear end of the inner tube 20, the second slider 32 being provided through the outer tube 10, the second slider 32 being provided at the rear end thereof with a fitting block 35, the fitting block 35 having two inclined surfaces, the two inclined surfaces being fitted with the two driving wheels 34, respectively.

Wherein, the second slider 32 is provided with a second axial hole 321 inside, the second axial hole 321 is used for the lead 53 to pass through, and the lead 53 can pass through the clamping plate 101 again to form the outer joint 54.

Therefore, when the two clamping plates 101 are gradually closed under the action of external force, the two driving wheels 34 drive the matching block 35 to move forwards, the inner tube 20 moves forwards, and when the two clamping plates 101 are gradually far away, the reset piece 40 drives the inner tube 20 to move backwards.

As shown in fig. 15, when a doctor performs an operation on a patient lying on an operation table, the doctor can put the retinal nail 2 in the holder 1, then feed the retinal nail 2 into the eyeball, and then drive the driving member 30 forward through the pressing assembly 80, the driving member 30 drives the inner tube 20 forward until the retinal nail 2 is detached, and the retinal nail 2 fixes the microelectrode 3 on the retina. When the retinal nail 2 pierces the eyeball wall, the capillary vessel at the retina will have partial bleeding, and at this time, the doctor can tread the above-ground foot switch 90, so that the heat conducting member 52 of the coagulation device 50 can generate heat energy under the electromagnetic action of the electromagnetic coil 51, the heat energy can cause edema of surrounding tissues, the blood vessel is pressed, the blood vessel is blocked, and at the same time, the blood can be coagulated to complete hemostasis.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative 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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A holder for a retinal nail, comprising:

an outer tube, in which an axial hollow channel is formed;

the inner tube is arranged in the hollow channel and can axially move relative to the outer tube, and the axial front end of the inner tube extending out of the outer tube is set as a nail holding end;

the transmission piece is used for pushing the inner pipe to move forwards;

the reset piece is used for pushing the inner tube to reset backwards;

an electromagnetic coil and a heat conducting member, wherein the heat conducting member conducts heat under the electromagnetic action of the electromagnetic coil so as to be used for solidifying bleeding caused by the penetration of the retinal nail into the eyeball wall,

the electromagnetic coil is wound on the outer tube, and the heat conducting piece is arranged on the nail holding end of the inner tube; or (b)

The electromagnetic coil is wound on the inner tube, and the heat conducting piece is arranged at the front end of the outer tube in the axial direction;

and the pressing component is arranged at the axial rear end of the outer tube and drives the transmission piece to move forwards in a pressing mode.

2. The retinal nail holder according to claim 1, wherein the electromagnetic coil is further connected to a foot switch for controlling the on/off of the electromagnetic coil.

3. The retinal nail holder according to claim 1, wherein the electromagnetic coil is connected with an adjusting device for adjusting the output power.

4. The holder for retinal nails according to claim 1, wherein the electromagnetic coil is spiral on the outer circumference of the outer tube or the inner tube.

5. The holder for retinal nails according to claim 1, wherein the electromagnetic coil is connected with a wire, and a nanowire groove is provided on the outer circumference of the outer tube or the inner tube, and the wire is embedded in the nanowire groove.

6. The holder for retinal nails according to claim 5, wherein the nanowire groove has a U-shaped cross section, and an adhesive is provided between the lead wire and the nanowire groove.

7. The holder for retinal nails according to any one of claims 1 to 6, wherein,

the transmission member includes:

the first sliding block is arranged at the axial rear end of the inner tube, the first sliding block can be axially and slidably arranged in the outer tube, and the reset piece is stopped between the outer tube and the first sliding block;

the second sliding block is abutted against the axial rear end of the first sliding block, and the pressing component is abutted against the second sliding block and drives the second sliding block to move forwards in a pressing mode.

8. The holder for retinal nails according to claim 7, wherein a wire is connected to the electromagnetic coil, and the electromagnetic coil is wound around the outer circumference of the inner tube;

the first sliding block is provided with a first axial hole, the second sliding block is provided with a second axial hole, the first axial hole is communicated with the second axial hole, and the wire sequentially passes through the first axial hole, the second axial hole and the pressing component from the inner tube and is connected with an outer joint.

9. The retinal nail holder according to claim 8, wherein,

the outer tube with can dismantle the connection between the pressing component, the wire is in first axial hole or be provided with the dismantlement joint in the second axial hole, the inner tube with first slider is the components of a whole that can function independently structure, the axial rear end of inner tube is provided with the connecting plate, the connecting plate with the axial front end butt joint of first slider.

10. The holder for retinal nails according to any one of claims 1 to 6, wherein,

the nail holding end is columnar, and a nail holding hole is formed in the nail holding end; or (b)

The nail holding end comprises: the first clamping head and the second clamping head are provided with corresponding clamping holes for jointly clamping the end parts of the retina nails.