CN112618152A - Viscoelastic agent and perfusate integrated injection device capable of measuring intraocular pressure - Google Patents

Viscoelastic agent and perfusate integrated injection device capable of measuring intraocular pressure Download PDF

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Publication number
CN112618152A
CN112618152A CN202011464254.0A CN202011464254A CN112618152A CN 112618152 A CN112618152 A CN 112618152A CN 202011464254 A CN202011464254 A CN 202011464254A CN 112618152 A CN112618152 A CN 112618152A
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tube
needle
cylinder
channel
double
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CN112618152B (en
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叶子
李朝辉
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Chinese PLA General Hospital
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Chinese PLA General Hospital
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007Methods or devices for eye surgery
    • A61F9/00736Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B3/00Apparatus for testing the eyes; Instruments for examining the eyes
    • A61B3/10Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
    • A61B3/16Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring intraocular pressure, e.g. tonometers

Abstract

The invention discloses a viscoelastic agent and perfusion fluid integrated injection device capable of measuring intraocular pressure, which comprises a double-channel needle body, a double-channel needle cylinder and a pressure monitor, wherein a cylinder cavity of the double-channel needle cylinder is divided into a first cylinder channel and a second cylinder channel by a middle partition plate, a liquid outlet plugging hole is formed in the middle of the front end of the double-channel needle cylinder, the double-channel needle body consists of a needle tube A and a needle tube B communicated with the needle tube A, a first tube opening is formed in the end part of the needle tube B, a miniature pressure sensor A is arranged on the first tube opening, an inner needle tube is arranged in the tube cavity of the needle tube A, a second tube opening penetrates through the tube wall of the needle tube A, and a miniature pressure sensor B is arranged on the second tube opening, and the miniature pressure sensor A and the. The invention can realize that two substances, namely viscoelastic agent and perfusate, are respectively injected into a specific area in the eyeball, thereby maintaining the pressure balance in the eyeball, protecting the eyeball structure and creating safe operation conditions for ophthalmic surgery.

Description

Viscoelastic agent and perfusate integrated injection device capable of measuring intraocular pressure
Technical Field
The invention relates to the field of ophthalmic medical instruments, in particular to a viscoelastic agent and perfusate integrated injection device capable of measuring intraocular pressure.
Background
Fig. 1 simply shows the basic structure of a human eyeball, which is composed of a cornea 100, an anterior chamber 101, an iris 102, a capsular bag 103, a posterior chamber 106, a vitreous cavity 108, and a lens 104 inside the capsular bag 103 from the outside to the inside of the eyeball. In various ophthalmic surgeries, the pressure inside the eyeball needs to be kept in a balanced and proper state, the intraocular pressure is the pressure exerted by the contents of the eyeball on the wall of the eyeball, the normal intraocular pressure is in a range of 10mmHg-21mmHg (1.33kPa-2.80kPa), and the structure of the eyeball needs to be kept intact and effectively protected, and the prior art generally needs to inject viscoelastic agents into the eyeball. For example, in cataract surgery, the cataract disease is mainly caused by the opacity of natural lens, and needs to replace artificial lens, firstly, an incision 107 is made in the cornea 100, and viscoelastic agent needs to be injected into the anterior chamber (mainly the region of the anterior chamber 101 in fig. 1) of the eye of the cataract patient through a special surgical needle, so as to maintain intraocular pressure, protect various tissues in the eyeball and the like. Wherein, the viscoelastic agent comprises the following main components: sodium hyaluronate, chondroitin sulfate and methylcellulose generally need to absorb most of viscoelastic agents after the operation is finished, a small amount of residual viscoelastic agents can be absorbed and metabolized by the human body, and the viscoelastic agents are harmless under normal intraocular pressure.
Ophthalmic surgery (for example, cataract surgery, especially for complex cataract patients with a history of previous vitrectomy surgery or high myopia, the fluid loss in the posterior chamber 106 and the vitreous cavity 108 is serious), viscoelastic injection is an important filling and safety guarantee for the surgical process, but the mobility of viscoelastic is limited, the filling of the anterior chamber 101 of the eyeball can be better implemented under professional operation of doctors, the balance of intraocular pressure is maintained, the posterior chamber 106 and the vitreous cavity 108 of the eyeball are also important areas, viscoelastic is not easy to be filled in the above areas, so perfusion fluid (water sample texture) is usually adopted for filling, the perfusion fluid is a necessary sterile perfusion solution, and is a sterile physiological balanced salt solution, and the main ingredients are: sodium chloride, potassium chloride, calcium chloride dihydrate, magnesium chloride hexahydrate, sodium acetate trihydrate, sodium citrate dihydrate and water for injection. The existing injection needle and injector for injecting viscoelastic agent or perfusate have single structures, and can only inject the first substance for two ophthalmic surgery substances of viscoelastic agent and perfusate, and then inject the second substance after the viscoelastic agent and the perfusate are successful, so that the injection needle can be inserted and pulled out in the incision 107 for multiple times, the internal tissues of eyeballs can be easily scratched and damaged, the operation difficulty of the surgery is increased, the surgery risk and the complication occurrence rate can be greatly improved, meanwhile, when the two substances are injected, the internal pressure of the eyeballs can not be monitored, the intraocular pressure is easily unbalanced, and the ophthalmic surgery failure and serious medical accidents are easily caused.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a viscoelastic agent and perfusate integrated injection device capable of measuring intraocular pressure, wherein a dual-channel needle cylinder comprises a first cylinder channel and a second cylinder channel, two flow channels are respectively provided with a piston push rod, the first cylinder channel is used for storing perfusate, the second cylinder channel is used for storing viscoelastic agent, and the viscoelastic agent and the perfusate integrated injection device can perform injection operation respectively; the viscoelastic agent filling channel corresponding to the second cylinder is arranged in the dual-channel needle body, viscoelastic agent filling can be carried out on a specific region in an eyeball, the dual-channel needle body is the filling liquid filling channel corresponding to the first cylinder except the second cylinder, filling liquid filling can be carried out on the specific region in the eyeball, two different substances in different regions in the eyeball can be filled through one set of injection device, operation risks are greatly reduced, and the eyeball structure is effectively protected.
The purpose of the invention is realized by the following technical scheme:
a viscoelastic agent and perfusion fluid integrated injection device capable of measuring intraocular pressure comprises a dual-channel needle head body, a dual-channel needle cylinder and a pressure monitor, wherein a middle partition plate is arranged in the middle of a cylinder cavity of the dual-channel needle cylinder and divides the cylinder cavity of the dual-channel needle cylinder into a first cylinder channel and a second cylinder channel, a first piston push rod is movably installed in the first cylinder channel in a push-and-pull mode, a second piston push rod is movably installed in the second cylinder channel in a push-and-pull mode, a liquid outlet insertion hole is formed in the middle of the front end of the dual-channel needle cylinder, and the liquid outlet insertion hole is respectively communicated with the first cylinder channel and the second cylinder channel; the double-channel needle head body consists of a needle head tube A and a needle head tube B communicated with the needle head tube A, the rear end part of the needle head tube A is provided with an insertion part, and the insertion part is inserted in a liquid outlet insertion hole of the double-channel needle cylinder in a sealing way; the end part of the needle tube B is provided with a first tube orifice, a miniature pressure sensor A is arranged on the first tube orifice, a first line cavity is arranged on the tube wall of the double-channel needle body along the length direction, and a first signal wire for connecting the miniature pressure sensor A and a pressure monitor is arranged in the first line cavity; an inner needle tube is arranged in a tube cavity of the needle tube A, a tube opening, close to the insertion part, of the inner needle tube is flush with the end face of the insertion part, a tube opening at the other end of the inner needle tube is a second tube opening, the second tube opening penetrates through the tube wall of the needle tube A, a miniature pressure sensor B is arranged on the second tube opening, a second line cavity is formed in the tube wall of the needle tube A along the length direction, and a second signal line used for connecting the miniature pressure sensor B with a pressure monitor is arranged in the second line cavity.
In order to better realize the invention, the end face of the insertion part is fixedly provided with a separation insertion plate, and the middle partition plate is provided with an insertion groove which is in matched insertion connection with the separation insertion plate.
Preferably, an air pressure detector is further connected to the pressure monitor.
Preferably, syringe needle pipe A and syringe needle pipe B become an contained angle, miniature pressure sensor A is the barrel shape, miniature pressure sensor A fixes locating first mouth of pipe tip, miniature pressure sensor A's barrel chamber, syringe needle pipe B's lumen, syringe needle pipe A's lumen, the first pipeline of binary channels cylinder communicate in proper order.
Preferably, miniature pressure sensor B is the barrel shape, miniature pressure sensor B is fixed to be located the second mouth of pipe tip, miniature pressure sensor B's barrel cavity, the lumen of interior syringe needle pipe, the second cylinder way of binary channels cylinder communicate in proper order.
Preferably, a first liquid injection pipe communicated with the first cylinder is arranged on the double-channel cylinder, and a pipe valve A is arranged on the first liquid injection pipe.
Preferably, a second liquid injection pipe communicated with the second cylinder passage is arranged on the double-channel cylinder, and a pipe valve B is arranged on the second liquid injection pipe.
Preferably, the first piston push rod comprises a piston A and a push rod A fixedly connected with the piston A, the piston A is arranged in the first cylinder channel in a matched mode, and a push handle A arranged outside the rear end of the double-channel cylinder is fixed to the end portion of the push rod A.
Preferably, the second piston push rod comprises a piston B and a push rod B fixedly connected with the piston B, the piston B is arranged in the second cylinder channel in a matched mode, and a push handle B arranged outside the rear end of the double-channel cylinder is fixed to the end portion of the push rod B.
Preferably, the top surface of the inner needle tube is a horizontal plane, the top surface of the inner needle tube is located in the middle of the lumen of the needle tube a, and the middle partition plate is an extension plate of the top surface of the inner needle tube.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) the double-channel needle cylinder comprises a first cylinder channel and a second cylinder channel, wherein piston push rods are respectively arranged in the two flow channels, the first cylinder channel is used for storing perfusate, and the second cylinder channel is used for storing viscoelastic agent and can perform respective injection operation; the viscoelastic agent filling channel corresponding to the second cylinder is arranged in the dual-channel needle body, viscoelastic agent filling can be carried out on a specific region in an eyeball, the dual-channel needle body is the filling liquid filling channel corresponding to the first cylinder except the second cylinder, filling liquid filling can be carried out on the specific region in the eyeball, two different substances in different regions in the eyeball can be filled through one set of injection device, operation risks and complication incidence rate are greatly reduced, and the eyeball structure is effectively protected.
(2) The invention can realize that two substances, namely viscoelastic agent and perfusate, are respectively injected into a specific area in the eyeball, thereby maintaining the pressure balance in the eyeball, protecting the eyeball structure and creating good and safe operation conditions for ophthalmic surgery.
(3) When the pressure in the posterior chamber, the vitreous cavity area and the anterior chamber area in the eyeball is reduced, the pressure can be accurately known through the micro pressure sensor B and the micro pressure sensor A respectively so as to correspondingly supplement and inject perfusate or viscoelastic agent, maintain the intraocular pressure balance and protect the eyeball structure in time.
Drawings
FIG. 1 is a schematic diagram of a human eyeball tissue structure;
FIG. 2 is a schematic perspective view of the dual channel needle body;
FIG. 3 is a sectional view of the dual-channel needle body and the dual-channel syringe after being spliced and combined;
FIG. 4 is a schematic view of the insertion assembly of the dual channel needle body and the dual channel syringe;
FIG. 5 is a sectional view of the dual channel needle body;
FIG. 6 is an enlarged fragmentary view of FIG. 5 at the location of the first orifice;
FIG. 7 is an enlarged fragmentary view of FIG. 5 at the second nozzle location;
fig. 8 is a partially enlarged view of fig. 5 at the position of the insertion portion.
Wherein, the names corresponding to the reference numbers in the drawings are:
1-double-channel needle body, 2-needle tube A, 21-inserting part, 3-needle tube B, 31-first tube opening, 32-miniature pressure sensor A, 4-inner needle tube, 41-second tube opening, 42-miniature pressure sensor B, 5-double-channel needle tube, 6-first tube passage, 7-first piston push rod, 8-second tube passage, 9-second piston push rod, 10-middle partition plate, 11-partition inserting plate, 12-liquid outlet inserting hole, 13-pressure monitor, 14-air pressure detector, 15-first liquid injection tube, 16-second liquid injection tube, 100-cornea, 101-anterior chamber, 102-iris, 103-crystalline lens bag, 104-crystalline lens, 105-crystalline lens suspensory ligament, 106-posterior chamber, 107-incision and 108-vitreous cavity.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
examples
As shown in fig. 2 to 8, a viscoelastic and perfusate integrated injection device capable of measuring intraocular pressure comprises a dual-channel needle body 1, a dual-channel needle cylinder 5 and a pressure monitor 13, wherein a middle partition plate 10 is arranged in the middle of a cylinder cavity of the dual-channel needle cylinder 5, the cylinder cavity of the dual-channel needle cylinder 5 is divided into a first cylinder channel 6 and a second cylinder channel 8 by the middle partition plate 10, a first piston push rod 7 is movably installed in the first cylinder channel 6 in a push-pull manner, a second piston push rod 9 is movably installed in the second cylinder channel 8 in a push-pull manner, the first cylinder channel 6 is used for storing perfusate, the perfusate is injected into a cavity of the dual-channel needle body 1 except an inner needle tube 4 by the first piston push rod 7, and then is output through a first pipe orifice 31; the second channel 8 is used for storing viscoelastic, and the viscoelastic is injected into the cavity of the inner needle tube 4 through the second piston push rod 9 and then is output through the second nozzle 41. The middle part of the front end of the double-channel needle cylinder 5 is provided with a liquid outlet insertion hole 12, and the liquid outlet insertion hole 12 is respectively communicated with the first cylinder passage 6 and the second cylinder passage 8. As shown in fig. 3 and 4, the double-channel syringe 5 is provided with a first infusion tube 15 communicated with the first syringe 6, the first infusion tube 15 is provided with a pipe valve a, the pipe valve a can perform opening and closing operations of the first infusion tube 15, when infusion liquid needs to be injected into the first syringe 6 through the first infusion tube 15, the pipe valve a is opened, otherwise, the pipe valve a is closed. The double-channel needle cylinder 5 is provided with a second liquid injection pipe 16 communicated with the second cylinder channel 8, the second liquid injection pipe 16 is provided with a pipe valve B, the pipe valve B can perform opening and closing operation of the second liquid injection pipe 16, when viscoelastic agent needs to be injected into the second cylinder channel 8 through the second liquid injection pipe 16, the pipe valve B is opened, otherwise, the pipe valve B is closed.
As shown in fig. 3 and 4, the first piston push rod 7 includes a piston a and a push rod a fixedly connected with the piston a, the piston a is disposed in the first cylinder 6 in a matching manner, and a push handle a disposed outside the rear end of the dual-channel cylinder 5 is fixed at the end of the push rod a. The second piston push rod 9 comprises a piston B and a push rod B fixedly connected with the piston B, the piston B is arranged in the second cylinder passage 8 in a matching mode, and a push handle B arranged outside the rear end of the double-channel cylinder 5 is fixed at the end portion of the push rod B.
As shown in fig. 5-8, the double-channel needle body 1 is composed of a needle tube a2 and a needle tube B3 communicated with the needle tube a2, an included angle is formed between the needle tube a2 and the needle tube B3, the rear end of the needle tube a2 is provided with an insertion part 21, and the insertion part 21 is inserted in the liquid outlet insertion hole 12 of the double-channel syringe 5 in a sealing manner. The end of the needle tube B3 is provided with a first tube opening 31, the first tube opening 31 is provided with a miniature pressure sensor A32, the tube wall of the dual-channel needle body 1 is provided with a first circuit cavity along the length direction, the first circuit cavity is provided with a first signal line for connecting the miniature pressure sensor A32 and the pressure monitor 13, as shown in fig. 5, the tube wall above the dual-channel needle body 1 (including the needle tube A2 and the needle tube B3) is provided with a first circuit cavity formed by an inner and outer double-layer structure, the first circuit cavity is used for laying the first signal line, of course, a wire groove A can be arranged outside the dual-channel needle body 1 (namely, the outer tube wall), the first signal line is laid in the wire groove A, and then the wire groove A is sealed and encapsulated. As shown in fig. 6, the micro pressure sensor a32 is in the shape of a cylinder, the micro pressure sensor a32 is fixedly arranged at the end of the first tube opening 31 (as shown in fig. 5, the micro pressure sensor a32 extends from the end of the first tube opening 31), and the barrel cavity of the micro pressure sensor a32, the lumen of the needle cannula B3, the lumen of the needle cannula a2, and the first channel 6 of the dual-channel syringe 5 are sequentially communicated.
The double-channel needle head body 1 and the double-channel needle cylinder 5 adopt a splicing combination mode, after splicing, the separation splicing plate 11 is just spliced in the splicing groove of the middle partition plate 10, the separation splicing plate 11 can also separate two substances of viscoelastic and perfusate, the combination and the use are very convenient, and the disassembly and the cleaning are also very convenient. The double-channel needle cylinder 5 can also be matched with a sealing plug, and when the double-channel needle cylinder 5 is not used, the sealing plug is used for sealing the liquid outlet insertion hole 12 of the double-channel needle cylinder 5.
An inner needle tube 4 is arranged in a tube cavity of the needle tube A2, a tube opening of the inner needle tube 4 close to the insertion part 21 is flush with the end face of the insertion part 21, a tube opening at the other end of the inner needle tube 4 is a second tube opening 41, the second tube opening 41 penetrates through the tube wall of the needle tube A2, a miniature pressure sensor B42 is arranged on the second tube opening 41, a second circuit cavity is arranged on the tube wall of the needle tube A2 along the length direction, a second signal line for connecting the miniature pressure sensor B42 with the pressure monitor 13 is arranged in the second circuit cavity, as shown in figure 5, a second circuit cavity formed by an inner-outer double-layer structure is arranged on the tube wall below the needle tube A2, the second circuit cavity is used for arranging the second signal line, of course, a wire groove B can be arranged outside the needle tube A2, the second signal line is arranged in the wire groove B, and then the second signal. As shown in fig. 7, the micro pressure sensor B42 is cylindrical, the micro pressure sensor B42 is fixed to the end of the second nozzle 41 (as shown in fig. 5, the micro pressure sensor B42 extends from the end of the second nozzle 41), and the barrel cavity of the micro pressure sensor B42, the lumen of the inner needle tube 4, and the second barrel channel 8 of the dual-channel syringe 5 are sequentially communicated.
The miniature pressure sensor A32 and the miniature pressure sensor B42 of the invention both adopt miniature pressure sensors or intraocular pressure sensors suitable for the interior of eyeballs, such as sensors and microsystems 2010(029)006, Zhuzhenhahan, Liujing all and the like, wherein the implantable intraocular pressure microsensor is introduced, such as the pressure sensor in an implantable intraocular pressure monitor for glaucoma patients mentioned in Baidu encyclopedic.
The pressure monitor 13 of the present invention is further connected to an air pressure detector 14, the pressure monitor 13 has a display screen, the display screen can display the pressure condition detected by the micro pressure sensor B42, the pressure condition detected by the micro pressure sensor a32 and the pressure condition detected by the air pressure detector 14, the air pressure detector 14 is used for monitoring the external air pressure, the pressure monitor 13 has a pressure comparison module inside, the pressure comparison module compares the external air pressure with the intraocular pressure, and the comparison result is displayed on the display screen of the pressure monitor 13.
As shown in fig. 4, the end face of the inserting portion 21 is fixedly provided with a separation inserting plate 11, and the middle partition plate 10 is provided with an inserting groove which is inserted and matched with the separation inserting plate 11.
As shown in fig. 5, the top surface of the inner needle tube 4 is a horizontal surface, the top surface of the inner needle tube 4 is located in the middle of the lumen of the needle tube a2, and the middle partition 10 is an extension board of the top surface of the inner needle tube 4.
When in use, the double-channel needle head body 1 and the double-channel needle cylinder 5 are matched and spliced as follows: the separation inserting plate 11 corresponds to the inserting groove of the middle partition plate 10, the inserting part 21 of the double-channel needle body 1 is inserted into the liquid outlet inserting hole 12 of the double-channel needle cylinder 5, and the separation inserting plate 11 corresponds to the inserting groove of the middle partition plate 10, so that the separation inserting plate 11 is arranged in the liquid outlet inserting hole 12 and plays a role of separating channels, and the perfusion fluid and the viscoelastic agent can be prevented from being contacted or mixed with each other.
The inner needle tube 4 forms a viscoelastic perfusion channel inside the needle tube A2, and the double-channel needle body 1 (comprising the needle tube A2 and the needle tube B3) forms a perfusion fluid perfusion channel except the tube cavity of the inner needle tube 4, so that the perfusion fluid perfusion channel and the viscoelastic perfusion channel are relatively isolated.
The perfusion liquid is stored in the first barrel 6, and the perfusion liquid can be injected into the first barrel 6 through the first perfusion tube 15; viscoelastic agent is stored in the second channel 8, and viscoelastic agent can be injected into the second channel 8 through the second liquid injection tube 16.
The double-channel needle body 1 is inserted into the eyeball of a patient through the cut 107, the second nozzle 41 of the inner needle tube 4 is just positioned in the area of the anterior chamber 101 so as to be convenient for injecting viscoelastic, the first nozzle 31 of the needle tube B3 is just positioned in the area of the posterior chamber 106 and the vitreous cavity 108 so as to be convenient for injecting perfusate, an included angle is formed between the needle tube A2 and the needle tube B3, the included angle is determined according to the structure of the eyeball of the human body, the main purpose of the included angle is to be convenient for the first nozzle 31 and the second nozzle 41 to be positioned in the corresponding areas, and the length sizes of the needle tube A2, the needle tube B3 and the inner needle tube 4 are also determined according to the structure of the eyeball of the human. During operation, the injection operation of the perfusate and the viscoelastic agent can be performed in sequence, or the injection operation of the perfusate and the viscoelastic agent can be performed synchronously, for example, the second piston push rod 9 is pushed to inject the viscoelastic agent into the anterior chamber 101 area, and then the first piston push rod 7 is pushed to inject the perfusate into the posterior chamber 106 and the vitreous body 108 area; according to actual conditions, the viscoelastic agent and the perfusion fluid can be injected simultaneously by the first piston push rod 7 and the second piston push rod 9.
The miniature pressure sensor A32 at the end of the first nozzle 31 measures the intraocular pressure in the posterior chamber 106 and the area of the vitreous chamber 108 in real time and transmits the intraocular pressure data of the area to the pressure monitor 13 for display, and the pressure comparison module in the pressure monitor 13 compares the intraocular pressure measured by the miniature pressure sensor A32 with the external air pressure monitored by the air pressure detector 14 and displays the comparison result on the display screen of the pressure monitor 13. Therefore, the intraocular pressure data of the posterior chamber 106 and the area of the vitreous cavity 108 can be timely fed back, so that the flow of the perfusate injected into the first pipe orifice 31 can be conveniently fed back and controlled, and when the intraocular pressure of the area is reduced, the perfusate can be timely injected and supplemented. The miniature pressure sensor B42 at the end of the second nozzle 41 measures the intraocular pressure in the area of the anterior chamber 101 in real time and transmits the intraocular pressure data of the area to the pressure monitor 13 for display, and the pressure comparison module in the pressure monitor 13 compares the intraocular pressure measured by the miniature pressure sensor B42 with the external air pressure monitored by the air pressure detector 14 and displays the comparison result on the display screen of the pressure monitor 13. Thus, the intraocular pressure data of the anterior chamber 101 region can be fed back in time to facilitate the feedback control of the viscoelastic agent flow injected from the second nozzle 41, and when the intraocular pressure of the region is reduced, the injection can be performed in time to supplement the viscoelastic agent. The invention adopts two substances of viscoelastic agent and perfusate to inject into specific areas in the eyeball respectively, thereby maintaining the pressure balance in the eyeball, protecting the eyeball structure and creating good operation conditions for ophthalmic surgery; when the pressure in the posterior chamber 106, the vitreous cavity 108 and the anterior chamber 101 of the eyeball is reduced, the pressure can be accurately obtained by the micro pressure sensor B42 and the micro pressure sensor A32 respectively, so as to correspondingly supplement the infusion fluid or the viscoelastic, maintain the balance of intraocular pressure and protect the eyeball structure in time. Moreover, the pressure monitor 13 can display the condition of the intraocular pressure and can also display the difference between the intraocular pressure and the external air pressure in real time, thereby protecting the eyeball and avoiding collapse or damage. After the operation is finished, the perfusate can be absorbed and metabolized by the interior of the eyeball without additional treatment, viscoelastic agents need to be absorbed and removed, the operation can be easily realized only by absorbing and removing in the anterior chamber 101, and the eyeball can also recover to the normal condition under the physiological action of the human body.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a visco-elastic agent of measurable intraocular pressure and integrative injection device of perfusate which characterized in that: the double-channel needle comprises a double-channel needle body (1), a double-channel needle cylinder (5) and a pressure monitor (13), wherein a middle partition plate (10) is arranged in the middle of a cylinder cavity of the double-channel needle cylinder (5), the cylinder cavity of the double-channel needle cylinder (5) is divided into a first cylinder channel (6) and a second cylinder channel (8) by the middle partition plate (10), a first piston push rod (7) is movably installed in the first cylinder channel (6) in a push-and-pull mode, a second piston push rod (9) is movably installed in the second cylinder channel (8) in the push-and-pull mode, a liquid outlet insertion hole (12) is formed in the middle of the front end of the double-channel needle cylinder (5), and the liquid outlet insertion hole (12) is respectively communicated with the first cylinder; the double-channel needle head body (1) consists of a needle head tube A (2) and a needle head tube B (3) communicated with the needle head tube A (2), the rear end part of the needle head tube A (2) is provided with an insertion part (21), and the insertion part (21) is inserted in a liquid outlet insertion hole (12) of the double-channel needle cylinder (5) in a sealing way; the end part of the needle tube B (3) is provided with a first tube opening (31), the first tube opening (31) is provided with a miniature pressure sensor A (32), the tube wall of the double-channel needle body (1) is provided with a first line cavity along the length direction, and a first signal line for connecting the miniature pressure sensor A (32) and the pressure monitor (13) is arranged in the first line cavity; an inner needle tube (4) is arranged in a tube cavity of the needle tube A (2), a tube opening, close to the insertion part (21), of the inner needle tube (4) is flush with the end face of the insertion part (21), a tube opening at the other end of the inner needle tube (4) is a second tube opening (41), the second tube opening (41) penetrates through the tube wall of the needle tube A (2) and is provided with a miniature pressure sensor B (42) on the second tube opening (41), a second line cavity is formed in the tube wall of the needle tube A (2) along the length direction, and a second signal line used for connecting the miniature pressure sensor B (42) with the pressure monitor (13) is arranged in the second line cavity.
2. A viscoelastic and perfusate integrated injector for intraocular pressure measurement as claimed in claim 1, wherein: the end face of the inserting part (21) is fixedly provided with a separating inserting plate (11), and the middle partition plate (10) is provided with an inserting groove which is matched and inserted with the separating inserting plate (11).
3. A viscoelastic and perfusate integrated injector for intraocular pressure measurement as claimed in claim 1, wherein: the pressure monitor (13) is also connected with an air pressure detector (14).
4. A viscoelastic and perfusate integrated injector for intraocular pressure measurement as claimed in claim 1, wherein: syringe needle pipe A (2) and syringe needle pipe B (3) become an contained angle, miniature pressure sensor A (32) are the barrel shape, first mouth of pipe (31) tip is fixed to miniature pressure sensor A (32), the tube chamber of miniature pressure sensor A (32), the lumen of syringe needle pipe B (3), the tube chamber of syringe needle pipe A (2), first pipeline (6) of binary channels cylinder (5) communicate in proper order.
5. A viscoelastic and perfusate integrated injector for intraocular pressure measurement according to claim 1 or 4, characterized in that: miniature pressure sensor B (42) are the barrel shape, miniature pressure sensor B (42) are fixed and are located second mouth of pipe (41) tip, the second barrel path (8) of the lumen of the section of thick bamboo chamber, interior syringe needle pipe (4) of miniature pressure sensor B (42), binary channels cylinder (5) communicate in proper order.
6. A viscoelastic and perfusate integrated injector for intraocular pressure measurement as claimed in claim 1, wherein: be equipped with on binary channels cylinder (5) and annotate liquid pipe (15) that are linked together with first pipeline (6), be equipped with pipe valve A on first notes liquid pipe (15).
7. A viscoelastic and perfusate integrated injector for intraocular pressure measurement as claimed in claim 1, wherein: and a second liquid injection pipe (16) communicated with the second cylinder channel (8) is arranged on the double-channel cylinder (5), and a pipe valve B is arranged on the second liquid injection pipe (16).
8. A viscoelastic and perfusate integrated injector for intraocular pressure measurement as claimed in claim 1, wherein: first piston push rod (7) include piston A and be connected fixed push rod A with piston A, piston A cooperation is arranged in first cylinder way (6), push rod A end fixing has the handle A that pushes away of arranging binary channels cylinder (5) rear end outside in.
9. A viscoelastic and perfusate integrated injector for intraocular pressure measurement as claimed in claim 1, wherein: second piston push rod (9) include piston B and be connected fixed push rod B with piston B, piston B cooperates and arranges second cylinder way (8) in, push rod B end fixing has the outside handle B that pushes away of arranging binary channels cylinder (5) rear end in.
10. A viscoelastic and perfusate integrated injector for intraocular pressure measurement as claimed in claim 2, wherein: the top surface of the inner needle tube (4) is a horizontal plane, the top surface of the inner needle tube (4) is positioned in the middle of the tube cavity of the needle tube A (2), and the middle partition plate (10) is an extension plate of the top surface of the inner needle tube (4).
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