CN109745171B - Nail holder for retinal prosthesis microelectrode fixing nail - Google Patents

Abstract

The invention discloses a nail holder of a retina prosthesis microelectrode fixing nail, which comprises: 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 coagulation device comprises a first electrode and a second electrode which are arranged at the nail holding end, a thermal coagulation area is formed between the first electrode and the second electrode and is used for coagulating bleeding caused by the penetration of the fixed nail into the eyeball wall, and the first electrode and the second electrode move along with the axial movement of the inner tube. Therefore, the method can simplify operation, reduce operation difficulty, avoid retinal cell necrosis in the prior art, and is easy to manufacture and implement.

Description

Nail holder for retinal prosthesis microelectrode fixing nail

Technical Field

The invention relates to the technical field of ophthalmic nerve stimulators, in particular to a nail holder of a retina prosthesis microelectrode fixing nail.

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 fixation nails is an extremely important step. The fixed posture of the microelectrode directly influences the visual perception effect of the implant. The microelectrode fixing nails penetrate through the mounting holes on the microelectrodes and then penetrate into the retina, the choroid and the 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 staple holder for a retinal prosthesis microelectrode staple that is simple and safe to use and does not cause damage to the retinal cells.

The nail holder of the retinal prosthesis microelectrode fixing nail according to the present invention comprises: an outer tube, on 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 coagulation device comprises a first electrode and a second electrode which are arranged at the nail holding end, a thermal coagulation area is formed between the first electrode and the second electrode and used for coagulating bleeding caused by the penetration of the fixed nail into the eyeball wall, and the first electrode and the second electrode move along with the axial movement of the inner tube.

Therefore, after the fixed nail penetrates the eyeball wall, retinal capillaries are broken to bleed, and at the moment, the coagulation device positioned at the nail holding end can play the role of coagulation, so that the bleeding of the capillaries can be directly coagulated. The mode is different from the traditional mode of transfusion hemostasis and hemostasis by an additional tool, the mode 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 nail holder is easy to manufacture and implement.

In some examples of the invention, the coagulation device is a bipolar electrocoagulator, and the first electrode and the second electrode are connected to a high frequency oscillator by a wire.

In some examples of the invention, the staple holder further comprises: the modulator is connected between the regulating circuit and the high-frequency oscillator, so that the control signal of the regulating circuit is modulated and then output to the high-frequency oscillator.

In some examples of the invention, the coagulation device is further connected to a foot switch that controls the on/off of the coagulation device.

In some examples of the invention, an electrothermal element is connected between the first electrode and the second electrode.

In some examples of the invention, the staple holding end is configured in a column shape, the staple holding end is provided with a staple holding hole, and the first electrode and the second electrode are positioned on an end face of the staple holding end and face away from the staple holding hole.

In some examples of the invention, the staple holding end comprises: the first clamping head and the second clamping head are provided with corresponding clamping holes so as to jointly clamp the end parts of the fixed nails, and the first electrode and the second electrode are respectively arranged on the end surfaces of the first clamping head and the second clamping head.

In some examples of the present invention, the first electrode and the second electrode are respectively connected with a wire, the outer peripheral wall of the inner tube is provided with a wire receiving groove with a U-shaped cross section in the axial direction, and the wire is embedded in the wire receiving groove.

In some examples of the invention, the staple 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 and the inner pipe are of a split structure, the first sliding block can be axially and slidably arranged in the outer pipe, the first sliding block is hollow to form a first axial hole, and the reset piece is stopped between the outer pipe and the first sliding block; the second sliding block is abutted against the axial rear end of the first sliding block, the second sliding block is hollow to form a second axial hole, the second axial hole is communicated with the first axial hole, the pressing component is abutted against the second sliding block, and the second sliding block is driven to move forwards in a pressing mode; wherein, the wire stretches into in the first axial hole and the second axial hole from the inner tube, and passes through the pressing component and forms the external joint.

In some examples of the invention, the outer tube and the pressing assembly are detachably connected, and the wire is provided with a detachable joint in the first axial hole or the second axial hole.

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 staple holder and staple of a retinal prosthetic microelectrode staple according to one embodiment of the present invention;

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

FIG. 3 is a cross-sectional view of the staple holder shown in FIG. 1;

FIG. 4 is a cross-sectional view of the staple holder shown in FIG. 3, with respect to the inner tube and the first sled;

FIG. 5 is a partial schematic view of the staple holder of FIG. 1 with respect to the staple holding end;

FIG. 6 is a schematic view of the staple holder of FIG. 1 with staples used to secure the microelectrode to the retina and sclera;

FIG. 7 is a schematic view of a partial structure of a staple holder of a retinal prosthesis microelectrode staple with respect to the staple holding end according to another embodiment of the present invention;

FIG. 8 is a schematic diagram of the operation of a staple holder for a retinal prosthesis microelectrode staple according to one embodiment of the present invention;

FIG. 9 is a schematic waveform diagram of a bipolar electrocoagulator;

FIG. 10 is a schematic view of a partial structure of a staple holder of a retinal prosthesis microelectrode staple with respect to the staple holding end according to yet another embodiment of the present invention;

FIG. 11 is a schematic view of the operation of the staple holder of FIG. 10;

FIG. 12 is a schematic view of a partial structure of a staple holder of a retinal prosthesis microelectrode staple with respect to a holding handle according to yet another embodiment of the present invention;

Fig. 13 is a view showing a surgical state of a staple holder of a retinal prosthesis microelectrode staple according to an embodiment of the present invention.

Reference numerals:

a staple holder 1; a staple 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; a first electrode 51; a second electrode 52; a wire 53; an electric heating element 54; an outer joint 55; disassembling the joint 56;

A high-frequency oscillator 60; a modulator 70; a regulating circuit 80; a foot switch 90; grip handle 100; a clamping plate 101; pressing the handle 110; a power supply 120; the assembly 130 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 staple holder 1 for a retinal prosthesis microelectrode staple 2 according to an embodiment of the present invention is described below with reference to fig. 1-13, the staple holder 1 being adapted to hold a staple 2, as shown in fig. 6, the staple 2 being adapted to secure a retinal prosthesis microelectrode 3 to the retina and sclera 4 of an eye.

The staple holder 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. 3 and 4.

The axial front end of the inner tube 20 extending out of the outer tube 10 is provided as a holding end 21, the holding end 21 being such that the tip thereof faces the retinal surface when the fixation nail 2 is gripped. It will be appreciated that the staple holding end 21 may perform the insertion or removal of the staples 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 fixing 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 fixing nail 2 can be completed.

The transmission member 30 serves to push the inner tube 20 forward. Wherein the staple holder 1 may comprise a return member 40, the return member 40 being adapted to push the inner tube 20 back. That is, the user can push the inner tube 20 forward by touching the transmission member 30, and in the process, the inner tube 20 can overcome the pressure of the resetting member 40, and the resetting member 40 can push the inner tube 20 to reset backward when the staple holder 1 returns to the initial state. Through the mutual cooperation of the transmission part 30 and the reset part 40, the nail holder 1 can effectively control the fixed nails 2, and each action of the fixed nails 2 is ensured to meet the requirements, so that the smooth operation can be ensured.

The coagulation device 50 is disposed on the needle holding end 21 of the inner tube 20, the coagulation device 50 faces the surface of the retina, the coagulation device 50 is formed with a thermal coagulation zone for coagulating bleeding caused by penetration of the eyeball wall by the fixation nail 2, and the coagulation device 50 moves along with the axial movement of the inner tube 20. That is, the coagulation device 50 can move with the inner tube 20 toward and away from the retina. It will be appreciated that after the staple 2 penetrates the eye wall, retinal capillaries rupture and bleed, and that the coagulation device 50 at the staple holding end 21 may perform its clotting function and may coagulate the capillary bleeding directly. This way is different from the traditional way of stopping bleeding by transfusion and stopping bleeding by an additional tool, the way does not transmit pressure to retina, can avoid necrosis of retina cells in operation, can ensure smooth operation, and the structure of the nail holder 1 is easy to manufacture and implement.

Specifically, as shown in fig. 2,5, 7 and 10, the coagulation device 50 includes a first electrode 51 and a second electrode 52 provided at the staple holding end 21, and a thermal coagulation area is formed between the first electrode 51 and the second electrode 52 for coagulating bleeding caused by penetration of the eyeball wall by the staple 2, and the first electrode 51 and the second electrode 52 move with axial movement of the inner tube 20. The first electrode 51 and the second electrode 52 generate electric heating action in the thermocoagulant region, so that tissue in the eye can be edematous, and then blood vessels are pressed, and the blood vessel cavity is reduced or blocked; it can also coagulate and carbonize blood to form thrombus to stop bleeding. Based on the method, the method is simple, safe and efficient.

In some embodiments of the present invention, as shown in connection with fig. 3, 4 and 8, coagulation device 50 may be a bipolar electrocoagulator with first electrode 51 and second electrode 52 connected by wire 53 to high frequency oscillator 60. The high frequency oscillator 60 may output a high frequency current to the first electrode 51 and the second electrode 52, so that an electric heating effect may be generated in the thermocoagulant blood region. Wherein fig. 9 shows an electrocoagulation waveform of a bipolar electrocoagulator, in which the abscissa is time and the ordinate is voltage, the bipolar electrocoagulator can output a periodically intermittent and gradual waveform.

Further, as shown in fig. 8, the staple holder 1 further includes: and a modulator 70 and a regulating circuit 80, wherein the modulator 70 is connected between the regulating circuit 80 and the high-frequency oscillator 60 to modulate a control signal of the regulating circuit 80 and output the modulated control signal to the high-frequency oscillator 60. That is, the modulator 70 mainly plays a role of modulation, so that the control signal generated by the adjusting circuit 80 is modulated and then output to the high-frequency oscillator 60, and the high-frequency oscillator 60 outputs a high-frequency current to the bipolar condenser. The high-frequency oscillator 60 and the modulator 70 are also connected to a power supply 120 for supplying power. According to the embodiment, the heating amount of the thermal coagulation area can be adjusted according to different bleeding conditions during operation so as to meet the coagulation requirement during operation.

As shown in fig. 8 and 13, the coagulation device 50 is also connected to a foot switch 90 for controlling the on/off state 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 source 120. 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.

In other embodiments of the present invention, as shown in fig. 10, an electrothermal element 54 is connected between the first electrode 51 and the second electrode 52. The electric heating element 54 may generate heat when current is passed therethrough, thereby forming a thermal coagulation zone between the first electrode 51 and the second electrode 52, which may cause tissue within the eye to become edematous, compress blood vessels, and may cause blood to coagulate. By adopting the electric heating element 54, the electric heating effect is more obvious, and the blood is quickly coagulated. The electric heating element 54 may be an electric heating structure such as a heating wire.

As shown in fig. 10, the electrothermal member 54 may be configured in a U shape or a V shape, and two ends of the electrothermal member 54 are respectively connected with the first electrode 51 and the second electrode 52, so that the electrothermal member 54 with such a shape can effectively control a thermal coagulation area, thereby facilitating accurate alignment to a position where coagulation is required. In addition, an insulating layer can be coated outside the electrothermal element 54 to avoid direct contact between the current and the retinal cells and reduce damage to the retinal cells. The insulating layer is preferably made of a biocompatible material.

As shown in fig. 11, the staple holder 1 further includes: the power supply 120, the regulating circuit 80 and the foot switch 90, the foot switch 90 is connected between the electric heating element 54 and the regulating circuit 80, and the regulating circuit 80 is also connected with the power supply 120 for supplying power. The regulating circuit 80 may send out power to control the heater 54 and the foot switch 90 controls whether the heater 54 is operating. The staple holder 1 with the above structure is easy to manufacture and implement.

According to some embodiments of the present invention, as shown in fig. 2 and 5, the staple holder 21 may be configured in a column shape, the staple holder 21 is provided with a staple holding hole 211, the first electrode 51 and the second electrode 52 are located on an end surface of the staple holder 21, and the first electrode 51 and the second electrode 52 face away from the staple holding hole 211. That is, the first electrode 51 and the second electrode 52 are located on the front end face of the nail holding end 21 and are disposed on the side facing away from the nail holding hole 211. The first electrode 51 and the second electrode 52 having the above-described forms can be effectively brought close to the retina, so that the thermocoagulant blood region can be effectively coagulated. In addition, the first electrode 51 and the second electrode 52 do not interfere with the staples 2, so that the staple holder 1 can smoothly operate the staples 2 for surgery. It should be noted that the nail holding end 21 with this structure may be applied to a bipolar electric coagulation device or an electric heating element 54.

According to other embodiments of the present invention, as shown in fig. 7, the staple holding end 21 includes: the first collet 212 and the second collet 213, the first collet 212 and the second collet 213 being provided with corresponding clamping holes to jointly clamp the end portions of the staples 2, the first electrode 51 and the second electrode 52 being provided on the end faces of the first collet 212 and the second collet 213, respectively. A gap is left between the first clamping head 212 and the second clamping head 213, the first clamping head 212 and the second clamping head 213 can deform, when the inner tube 20 moves forwards relative to the outer tube 10, the first clamping head 212 and the second clamping head 213 are slowly far away, the gap is enlarged, and the placing or detaching action of the fixed nail 2 can be conveniently completed; when inner tube 20 moves backward relative to outer tube 10, first clamp 212 and second clamp 213 approach each other slowly, and the gap becomes smaller, so that the restriction of staple 2 can be easily achieved.

Wherein the first electrode 51 and the second electrode 52 are each connected with a wire 53, and an arrangement form of the wire 53 is described below.

As shown in fig. 3 and 4, the first electrode 51 and the second electrode 52 are connected with a wire 53, respectively, and the outer peripheral wall of the inner tube 20 is provided with a wire receiving groove (not shown) having a U-shaped cross section in the axial direction, and the wire 53 is embedded in the wire receiving groove. The wire accommodating groove is used for accommodating the wire 53, the section of the wire 53 is generally circular, the U-shaped wire accommodating groove can be convenient for placing and fixing the wire 53, wherein the wire 53 is placed in the wire accommodating groove and can be adhered in the wire accommodating groove through adhesive (such as biocompatible silica gel), so that the fixing reliability of the wire 53 can be ensured. The inner tube 20 can function as a hidden wire 53 and also can ensure the mating stability of the inner tube 20 and the outer tube 10. In addition, the inner tube 20 and the outer tube 10 can be designed to be as small as possible, and can be manufactured and processed, and can satisfy a surgical space with a small intraocular space.

The lead 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), a metallic 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.

In some embodiments of the invention, as shown in fig. 1 and 3, the staple holder 1 further comprises: and a pressing assembly 130, the pressing assembly 130 being disposed at an axial rear end of the outer tube 10, and the pressing assembly 130 driving the driving member 30 to move forward in a pressing manner.

For example, the pressing assembly 130 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. 3, the transmission member 30 includes: the first slider 31 and the inner tube 20 may be of a split structure, the first slider 31 is axially slidably disposed within the outer tube 10, and the first slider 31 is connected to the axially rear end of the inner tube 20. For example, the first slider 31 is fixed to the inner tube 20 by welding or bonding after the lead 53 is attached thereto.

As shown in fig. 3 and 4, the first slider 31 is hollow inside to form a first axial hole 311, and the restoring member 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.

Specifically, as shown in fig. 4, 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 56. 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 an outer joint 55 through the grip handle 100. The first axial hole 311 and the second axial hole 321 can accommodate the lead 53, thereby playing a role of hiding the lead 53, ensuring reasonable wiring of the nail holder 1 and avoiding intertwining between power supply lines. The external connector 55 is used to connect to a power supply circuit.

As shown in fig. 3, the lead 53 is provided with a disassembly joint 56 within the first axial bore 311 or the second axial bore 321. The disassembly joint 56 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. 4, 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.

In other embodiments of the present invention, as shown in fig. 12, the pressing assembly 130 may further include two opposite clamping plates 101, the front ends of the clamping plates 101 are opposite to each other with a gap therebetween, the driving wheels 34 are disposed inside the two clamping plates 101, the second slider 32 is connected to the axial rear end of the inner tube 20, the second slider 32 is disposed through the outer tube 10, and the mating block 35 is disposed at the rear end of the second slider 32, and the mating block 35 has two inclined surfaces that are mated 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 55.

Therefore, when the two clamping plates 101 are gradually closed under the action of external force, the two driving wheels 34 drive the matching blocks 35 to move forwards, the inner tube 20 moves forwards, and when the two clamping plates 101 are gradually far away, the second sliding block 32 drives the inner tube 20 to move backwards.

As shown in fig. 13, when a doctor performs an operation on a patient, the patient lies on an operation table, the doctor can put the staples 2 into the staple holder 1, then send the staples 2 into the eyeball, and then forward drive the driving member 30 through the pressing assembly 130, the driving member 30 forward drives the inner tube 20 until the staples 2 are removed, and the staples 2 fix the microelectrodes 3 on the retina. Wherein, when the fixation nail 2 pierces the eyeball wall, the capillary vessel at the retina will have partial bleeding, at this time, the doctor can tread the above-ground foot switch 90, so that the first electrode 51 and the second electrode 52 of the coagulation device 50 can generate a thermocoagulation area near the retina, the thermocoagulation area can cause the peripheral tissue to be edematous, the blood vessel is pressed, the blood vessel is blocked, and at the same time, the blood can be coagulated, and the hemostasis is completed.

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 (8)

1. A staple holder for a retinal prosthesis microelectrode staple, 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;

The coagulation device comprises a first electrode and a second electrode which are arranged at the nail holding end, a thermal coagulation area is formed between the first electrode and the second electrode and is used for coagulating bleeding caused by the penetration of the fixed nail into the eyeball wall, and the first electrode and the second electrode move along with the axial movement of the inner tube;

The first electrode and the second electrode are respectively connected with a wire, and the nail 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 and the inner pipe are of a split structure, the first sliding block can be axially and slidably arranged in the outer pipe, the first sliding block is hollow to form a first axial hole, and the reset piece is stopped between the outer pipe and the first sliding block;

The second sliding block is abutted against the axial rear end of the first sliding block, the second sliding block is hollow to form a second axial hole, the second axial hole is communicated with the first axial hole, the pressing component is abutted against the second sliding block, and the second sliding block is driven to move forwards in a pressing mode;

The wire stretches into the first axial hole and the second axial hole from the inner pipe, and penetrates through the pressing component to form an outer joint, the outer pipe and the pressing component are detachably connected, and the wire is provided with a detachable joint in the first axial hole or the second axial hole.

2. The staple holder of claim 1 wherein said coagulation device is a bipolar electrocoagulator and said first electrode and said second electrode are connected by a wire to a high frequency oscillator.

3. The nail holder of the retinal prosthesis microelectrode fixing nail according to claim 2, wherein the high-frequency oscillator is connected to a modulator, and the modulator is connected to a regulating circuit, so that the modulator modulates a control signal of the regulating circuit and outputs the modulated control signal to the high-frequency oscillator.

4. The nail holder of the retinal prosthesis microelectrode fixing nail according to claim 1, wherein the coagulation device is further connected with a foot switch for controlling the on-off of the coagulation device.

5. The staple holder of claim 1 wherein an electrical heating element is connected between said first electrode and said second electrode.

6. The nail holder of a retinal prosthesis microelectrode fixing nail according to claim 1, wherein the nail holding end is in a columnar structure, the nail holding end is provided with a nail holding hole, and the first electrode and the second electrode are positioned on the end face of the nail holding end and are away from the nail holding hole.

7. The staple holder of a retinal prosthesis microelectrode staple of claim 1, wherein said staple holding end comprises: the first clamping head and the second clamping head are provided with corresponding clamping holes so as to jointly clamp the end parts of the fixed nails, and the first electrode and the second electrode are respectively arranged on the end surfaces of the first clamping head and the second clamping head.

8. The nail holder of the retinal prosthesis microelectrode fixing nail according to any one of claims 1 to 7, wherein the outer peripheral wall of the inner tube is provided with a wire receiving groove having a U-shaped cross section in the axial direction, and the guide wire is embedded in the wire receiving groove.