CN214967611U - Automatic control device for intracameral puncture drainage intraocular pressure - Google Patents
Automatic control device for intracameral puncture drainage intraocular pressure Download PDFInfo
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- CN214967611U CN214967611U CN202121675368.XU CN202121675368U CN214967611U CN 214967611 U CN214967611 U CN 214967611U CN 202121675368 U CN202121675368 U CN 202121675368U CN 214967611 U CN214967611 U CN 214967611U
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Abstract
The utility model relates to an anterior chamber puncture tapping intraocular pressure automatic control device, the device include pjncture needle, cylinder and pressure control valve and spring, the pjncture needle is located the cylinder head end, and built-in piston of cylinder and piston rod are equipped with pressure control valve and spring between piston and the pjncture needle, and wherein pressure control valve is located and is close to pjncture needle one side, and the spring is located and is close to piston one side. And a pressure adjusting screw is arranged on the other side of the spring and used for accurately adjusting the spring force. The upper end and the lower end of the pressure control valve are respectively connected with the valve seat, so that the position of the pressure control valve can be better fixed. The puncture needle is also connected with a limiting head, so that the damage of the intraocular tissue caused by the fact that the needle head enters the anterior chamber too deeply can be avoided. In addition, the puncture needle is close to spacing head one side still is equipped with intraocular pressure monitoring head and cylinder upper and lower both sides and is equipped with display screen and receiver respectively, includes power and data processing chip in the receiver. Its advantages are: can realize controlling the aqueous humor flow rate, the automatic control of intraocular pressure puncture drainage, and can also realize real-time monitoring intraocular pressure.
Description
Technical Field
The utility model belongs to the technical field of medical instrument technique and specifically relates to an intracameral puncture drainage intraocular pressure automatic control device.
Background
Glaucoma is the first irreversible blinding eye disease in the world, and the increase of intraocular pressure not only causes irreversible damage to optic nerves but also is accompanied with apoptosis of corneal endothelial cells, so that the early, rapid and effective reduction of intraocular pressure has important significance for treating glaucoma. In clinical work, when patients have acute increased intraocular pressure, if the pressure reduction effect of the medicine is poor, the intracameral puncture is often used for reducing the intraocular pressure.
But the intraocular pressure can be quickly and effectively reduced and the corneal edema can be resolved through anterior chamber puncture in the prior clinic. After proparacaine hydrochloride is used for eye dropping for 2 to 3 times in surface anesthesia before operation, a patient sits in front of a slit lamp microscope, a head is placed, a sterile 27G insulin injection needle is inserted into the anterior chamber at 2 points at the edge of a cornea and forms an included angle of 60 degrees with the plane of an iris, the patient penetrates into the anterior chamber by about 1mm, slightly presses the back part of the cornea, namely a little aqueous humor seeps out from a puncture hole, the needle is repeatedly moved and slightly presses the back part of the cornea, and after an eyeball is softened to about a normal level, intraocular pressure is measured by a handheld intraocular pressure meter, and the operation is finished after the pressure is confirmed to be normal. The intraocular pressure result needs to be repeatedly measured and confirmed in the operation process, which is very troublesome and can influence the success rate of the operation. And the intraocular pressure can not be synchronously monitored in real time in the liquid discharging operation process in the prior clinic.
The Chinese patent application: 201620317655.6 discloses an ophthalmic puncture needle for anterior chamber of high intraocular pressure, vitreous body puncture drainage or quantitative aqueous humor collection, which comprises a needle head, a syringe and a piston body, and is characterized in that the piston body is a hollow structure with two open ends, the open end in the syringe is covered with a breathable waterproof film, and the other open end is communicated with the atmosphere. However, the intraocular pressure cannot be synchronously monitored in real time in the liquid discharging operation process in the patent, and doctors cannot more accurately control the intraocular pressure of patients.
The Chinese patent application: 201520011017.7 discloses a safe anterior chamber puncture knife for lowering intraocular pressure, which comprises a knife body, wherein one end of the knife body is a knife tip, the tail part of the knife tip is provided with a bulge, a hollow groove is arranged in the knife body, the hollow groove penetrates through the whole knife body, and the opening part at one end of the hollow groove is positioned on the knife tip. The opening of the hollow groove on the tool nose is an inclined plane. The two bulges are respectively arranged at two sides of the hollow groove 4 and are symmetrical to the central axis of the cutter body. The vertical distance from the protrusion to the top end of the knife tip is 1.5 mm. The beneficial effects of the utility model are that the controllability is high, and the security is high, has reduced the damage to iris and crystal. However, the puncture knife used in this patent may cause some damage to the patient's eye, and it is also impossible to simultaneously monitor the intraocular pressure during the tapping operation.
In view of this, the utility model discloses to prior art not enough, the intraocular pressure automatic control puncture tapping device of controllable velocity of flow and pressure that proposes of novelty for the first time can solve this problem effectively and can the real-time supervision intraocular pressure. The automatic control device for the intracameral puncture drainage intraocular pressure of the utility model has not been reported at present.
Disclosure of Invention
The utility model aims at the defects of the prior art and provides an automatic control device for the intracameral puncture drainage intraocular pressure.
In order to achieve the purpose, the utility model adopts the technical proposal that:
the utility model provides an anterior chamber puncture and liquid-discharging intraocular pressure automatic control device, includes needle cover 1, pjncture needle 2 and cylinder 4, pjncture needle 2 is connected with cylinder 4 through spacing head 3, and cylinder 4 embeds there are piston 9 and piston rod 10, is equipped with pressure control valve 6 and spring 7 between piston 9 and the pjncture needle 2, and wherein pressure control valve 6 is located and is close to pjncture needle 2 one side, and spring 7 is located and is close to piston 9 one side, and pressure control valve 6 keeps away from pjncture needle 2 one side and still is equipped with pressure adjusting screw 8 in addition, and pressure control valve 6 is connected with disk seat 5, anterior chamber puncture and liquid-discharging intraocular pressure automatic control device still includes intraocular pressure monitoring head 11, display screen 12, receiver 13 and pressure sensor 14, and wherein intraocular pressure monitoring head 11 is located the one side that is close to spacing head 3 on pjncture needle 2, and pressure sensor 14 is connected with intraocular pressure monitoring head 11 electricity, and display screen 12 and receiver 13 are located both sides about the cylinder 4 surface respectively, still include power and data processing chip in the receiver 13, wherein power and data processing chip, intraocular pressure monitoring head 11 and display screen 12 and pressure sensor 14 all electrically connect.
Preferably, the exposed length of the puncture needle 2 is 2.5 mm.
Preferably, the head end of the limiting head 3 is conical.
Preferably, the diameter of the needle cylinder 4 is larger than the diameter of the piston rod 10.
Preferably, said valve seat 5 is cylindrical hole shaped.
Preferably, the pressure control valve 6 is in a conical shape, and the pressure control valve 6 includes a valve core and a valve therein.
Preferably, to ensure sufficient negative pressure extraction, the syringe plunger is widened relative to a standard syringe to improve sealing.
Preferably, the power source is a rechargeable battery.
Further, the working principle of the pressure control valve 6 is as follows: the opening and closing of the pressure control valve 6 are determined by the opening force and the closing force acted on the valve core, the opening force is generated by subtracting the pressure of the eye fluid flowing through the needle head hole of the puncture needle 2 from the sum of the suction pressure and the intraocular pressure of the needle cylinder 4 and the area of the hole of the valve seat 5; the closing force is generated by the pressure of the spring 7; when the intraocular pressure is higher than the normal intraocular pressure range, the opening force is larger than the closing force, the valve on the pressure control valve 6 is opened, and the excess fluid in the anterior chamber is led out; when the intraocular pressure is reduced to the normal intraocular pressure range (the design time is to reach the intermediate value of 17mmHg), the suction pressure and the intraocular pressure are not enough to overcome the vacuum resistance of the puncture needle 2 and the elasticity of the spring 7, the valve on the pressure control valve 6 is closed by the spring 7, and the puncture liquid discharging operation is finished.
Further, the working principle of the intraocular pressure monitoring head 11 is as follows: the intraocular pressure force acts on the intraocular pressure monitoring head 11, the signal is further transmitted to the pressure sensor 14, and the intraocular pressure signal is displayed on the display screen 12 through the data processing chip.
It should be noted that the key to the completion of the above function is the setting of the spring force. Therefore, we have confirmed through experiments and reference to relevant data the utility model discloses the suction negative pressure value of cylinder has confirmed the flow through the pinhole according to the reasonable decompression speed of intraocular pressure to confirm the pressure that flows through the needle hole under this flow according to hydrodynamics, thereby can calculate the spring force of valve, design out spring each item reasonable parameter at last. The pressure adjusting screw can finally adjust the spring force slightly so as to obtain better automatic control performance.
The utility model has the advantages that:
1. the designed puncture needle is shorter, the length of the exposed part is only 2.5mm, and the limit head is used for limiting, so that the damage of intraocular tissues caused by the fact that the needle head enters too deep into the anterior chamber can be avoided, and meanwhile, the hydraulic resistance of the needle head hole when the liquid is led out is reduced.
2. And components such as a pressure control valve and the like are added into the needle cylinder in front of the piston behind the puncture needle, and the components are assembled and debugged outside to form an independent component to be pressed in.
3. The valve core of the pressure control valve and the cylindrical hole-shaped valve seat are reliably sealed, and the hydraulic resistance is small when the valve is opened.
4. Intraocular pressure monitoring head, pressure sensor and display screen can be at doctor in the operation in-process real-time supervision patient intraocular pressure size of tapping, can help the more accurate definite patient intraocular pressure size of doctor to better help doctor carries out the operation.
5. To summarize: the utility model discloses can control the intraocular pressure and fall automatic shutdown tapping operation behind the normal scope, can control the outflow speed of aqueous humor at the drawing liquid in-process simultaneously, make the slow decline of intraocular pressure. In addition, the intraocular pressure of the patient can be monitored in real time in the liquid discharging operation process and synchronously fed back to the display screen, so that the doctor can be helped to determine the intraocular pressure of the patient more accurately, convenience is brought to the next operation of the doctor, the operation success rate is improved, and the liquid discharging operation method can be applied to clinic well.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic overall structure diagram of fig. 1 after further improvement.
Fig. 3 is an enlarged schematic view of the head of the present invention.
Fig. 4 is a schematic diagram of an electrical connection structure of the present invention.
1. A needle sleeve;
2. puncturing needle;
3. a limiting head;
4. a needle cylinder;
5. a valve seat;
6. a pressure control valve;
7. a spring;
8. a pressure adjusting screw;
9. a piston;
10. a piston rod;
11. an intraocular pressure monitoring head;
12. a display screen;
13. a storage box;
14. a pressure sensor.
Detailed Description
The present invention will be further described with reference to the following detailed description. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and such equivalents also fall within the scope of the appended claims.
Example 1
Referring to fig. 1, fig. 1 is a schematic view of the overall structure of the present invention.
The utility model provides an anterior chamber puncture liquid discharge intraocular pressure automatic control device, includes needle cover 1, pjncture needle 2 and cylinder 4, pjncture needle 2 is connected with cylinder 4 through spacing head 3, and cylinder 4 embeds there are piston 9 and piston rod 10, is equipped with pressure control valve 6 and spring 7 between piston 9 and the pjncture needle 2, and wherein pressure control valve 6 is located and is close to pjncture needle 2 one side, and spring 7 is located and is close to piston 9 one side, and pressure control valve 6 keeps away from pjncture needle 2 one side and still is equipped with pressure regulation screw 8 in addition, and pressure control valve 6 is connected with disk seat 5, preferably, pjncture needle 2 exposes length and is 2.5 mm. Preferably, the head end of the limiting head 3 is conical. Preferably, the diameter of the needle cylinder 4 is larger than the diameter of the piston rod 10. Preferably, said valve seat 5 is cylindrical hole shaped. Preferably, the pressure control valve 6 is in a conical shape, and the pressure control valve 6 includes a valve core and a valve therein. Preferably, to ensure sufficient negative pressure extraction, the syringe plunger is widened relative to a standard syringe to improve sealing.
The use method and the working principle of the embodiment are as follows:
it is first explained that the most critical of this construction is the setting of the spring force. Therefore, the suction negative pressure value of the needle cylinder is determined through experiments and referring to related data, the flow rate flowing through the needle hole is determined according to the reasonable pressure reduction speed of the intraocular pressure, the pressure flowing through the needle hole under the flow rate is determined according to hydromechanics, the spring force of the valve can be calculated, and finally, various reasonable parameters of the spring are designed. The pressure adjusting screw can finally adjust the spring force slightly so as to obtain better automatic control performance.
Then, before use, a doctor carries out preparation work such as eye disinfection on a patient according to a normal operation flow, after the preparation work is finished, the doctor takes down the needle sleeve 1, the puncture needle 2 enters the anterior chamber of the patient, firstly, the ocular pressure of the patient is higher than the normal intraocular pressure range (17mmHg), so that the opening force is larger than the closing force, the valve on the pressure control valve 6 is opened, and the redundant liquid in the anterior chamber is led out; when the intraocular pressure is gradually reduced to the normal intraocular pressure range along with the discharge of the redundant liquid, the suction pressure and the intraocular pressure are not enough to overcome the vacuum resistance of the puncture needle 2 and the elasticity of the spring 7, the valve on the pressure control valve 6 is closed by the spring 7, and the puncture liquid discharging operation is finished.
It should be noted that, when the puncture needle 2 enters the anterior chamber of the patient, because the exposed part of the puncture needle 2 is only 2.5mm, and the limit head 3 can play a limiting role, the damage of the intraocular tissue caused by the too deep penetration of the needle head of the puncture needle 2 into the anterior chamber can be avoided, and the hydraulic resistance of the needle head hole when the liquid is led out is reduced.
The utility model discloses well unification is established normal intraocular pressure value to 17 mmHg.
In the process of discharging liquid, the working principle of the pressure control valve 6 is as follows: the opening and closing of the pressure control valve 6 are determined by the opening force and the closing force acted on the valve core, the opening force is generated by subtracting the pressure of the eye fluid flowing through the needle head hole of the puncture needle 2 from the sum of the suction pressure and the intraocular pressure of the needle cylinder 4 and the area of the hole of the valve seat 5; the closing force is generated by the pressure of the spring 7.
Example 2
The present embodiment is a further improvement on the basis of embodiment 1, and adds a function of monitoring intraocular pressure in real time. The present embodiment focuses on explaining the structure, connection manner and using method different from those of embodiment 1, specifically:
referring to fig. 2, fig. 2 is a schematic view of an overall structure of the improved apparatus.
An automatic control device for anterior chamber puncture liquid discharge intraocular pressure comprises a needle sleeve 1, a puncture needle 2 and a needle cylinder 4, wherein the puncture needle 2 is connected with the needle cylinder 4 through a limiting head 3, a piston 9 and a piston rod 10 are arranged in the needle cylinder 4, a pressure control valve 6 and a spring 7 are arranged between the piston 9 and the puncture needle 2, the pressure control valve 6 is positioned on one side close to the puncture needle 2, the spring 7 is positioned on one side close to the piston 9, a pressure adjusting screw 8 is additionally arranged on one side of the pressure control valve 6 far away from the puncture needle 2, the pressure control valve 6 is connected with a valve seat 5, the automatic control device for anterior chamber puncture liquid discharge intraocular pressure further comprises an intraocular pressure monitoring head 11, a display screen 12, a storage box 13 and a pressure sensor 14, wherein the intraocular pressure monitoring head 11 is positioned on one side close to the limiting head 3 on the puncture needle 2, the pressure sensor 14 is electrically connected with the intraocular pressure monitoring head 11 (see fig. 3), the display screen 12 and the storage box 13 are respectively positioned on the upper side and the lower side of the outer surface of the needle cylinder 4 (see fig. 2), the storage box 13 also comprises a power supply and data processing chip, wherein the power supply and data processing chip, the intraocular pressure monitoring head 11, the display screen 12 and the pressure sensor 14 are all electrically connected (see fig. 4). Preferably, the power source is a rechargeable battery.
The use method and the working principle of the embodiment are as follows:
the same structure and the same using method as those in embodiment 1 are also the same in this embodiment, and are not described again here.
The difference lies in that: when a doctor carries out a liquid discharging operation, the intraocular pressure monitoring head 11 is acted by intraocular pressure force and can be synchronously transmitted to the pressure sensor 14, and at the moment, an ocular pressure signal is transmitted to the display screen 12 in a digital form through the data processing chip. The doctor can come real-time supervision patient intraocular pressure size through the figure on the display screen 12 to can the accurate control operation, avoid because external factors lead to the drainage operation failure.
And after the operation is finished, the puncture needle is taken down according to the normal operation flow.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and additions can be made without departing from the principles of the present invention, and these improvements and additions should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides an anterior chamber puncture liquid-discharging intraocular pressure automatic control device, includes needle cover (1), pjncture needle (2) and cylinder (4), its characterized in that, pjncture needle (2) are connected with cylinder (4) through spacing head (3), and cylinder (4) embeds there are piston (9) and piston rod (10), is equipped with pressure control valve (6) and spring (7) between piston (9) and pjncture needle (2), and wherein pressure control valve (6) are located and are close to pjncture needle (2) one side, and spring (7) are located and are close to piston (9) one side, and pressure control valve (6) keep away from pjncture needle (2) one side and still are equipped with pressure regulating screw (8) in addition, and pressure control valve (6) are connected with disk seat (5), anterior chamber puncture liquid-discharging intraocular pressure automatic control device still includes intraocular pressure monitoring head (11), display screen (12), receiver (13) and pressure sensor (14), wherein intraocular pressure monitoring head (11) are located pjncture needle (2) and go up one side near spacing head (3), and pressure sensor (14) are connected with intraocular pressure monitoring head (11) electricity, and both sides about display screen (12) and receiver (13) are located cylinder (4) surface respectively, still include power and data processing chip in receiver (13), wherein power and data processing chip, intraocular pressure monitoring head (11) and display screen (12) and pressure sensor (14) all are connected electrically.
2. The automatic control device for intracameral puncture drainage intraocular pressure according to claim 1, characterized in that the exposed length of the puncture needle (2) is 2.5 mm.
3. The automatic control device for intracameral puncture drainage intraocular pressure according to claim 1, characterized in that the head end of the limiting head (3) is conical.
4. The automatic control device for intracameral puncture tapping intraocular pressure according to claim 1, characterized in that the diameter of the needle cylinder (4) is larger than the diameter of the piston rod (10).
5. Automatic control device for intracameral puncture tapping intraocular pressure according to claim 1, characterized in that said valve seat (5) is cylindrical hole shaped.
6. The automatic control device for intracameral puncture drainage intraocular pressure according to claim 1, characterized in that the pressure control valve (6) is cone-shaped, and the pressure control valve (6) comprises a valve core and a valve inside.
7. The automatic control device for intracameral puncture drainage intraocular pressure according to claim 1, characterized in that the working principle of the pressure control valve (6) is as follows: the opening and closing of the pressure control valve (6) are determined by the opening force and the closing force acting on the valve core, and the opening force is generated by subtracting the pressure of eye fluid flowing through the needle head hole of the puncture needle (2) and the area of the hole of the valve seat (5) from the sum of the suction pressure and the intraocular pressure of the needle cylinder (4); the closing force is generated by the pressure of a spring (7); when the intraocular pressure is higher than the normal intraocular pressure range, the opening force is larger than the closing force, the valve on the pressure control valve (6) is opened, and the excess fluid in the anterior chamber is led out; when the intraocular pressure is reduced to the normal intraocular pressure range, the suction pressure and the intraocular pressure are not enough to overcome the vacuum resistance of the puncture needle (2) and the elasticity of the spring (7), the valve on the pressure control valve (6) is closed by the spring (7), and the puncture liquid discharging operation is finished.
8. The automatic control device for intracameral puncture drainage intraocular pressure according to claim 1, characterized in that the intraocular pressure monitoring head (11) works on the principle that: the eye pressure acts on the intraocular pressure monitoring head (11), the signal is further transmitted to the pressure sensor (14), and the intraocular pressure signal is displayed on the display screen (12) through the data processing chip.
9. The automatic control device for intracameral puncture drainage intraocular pressure according to claim 1, characterized in that the power supply is a rechargeable battery.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121675368.XU CN214967611U (en) | 2021-07-22 | 2021-07-22 | Automatic control device for intracameral puncture drainage intraocular pressure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121675368.XU CN214967611U (en) | 2021-07-22 | 2021-07-22 | Automatic control device for intracameral puncture drainage intraocular pressure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113425497A (en) * | 2021-07-22 | 2021-09-24 | 上海市同济医院 | Automatic control device for intracameral puncture drainage intraocular pressure |
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2021
- 2021-07-22 CN CN202121675368.XU patent/CN214967611U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113425497A (en) * | 2021-07-22 | 2021-09-24 | 上海市同济医院 | Automatic control device for intracameral puncture drainage intraocular pressure |
| CN113425497B (en) * | 2021-07-22 | 2024-07-16 | 上海市同济医院 | Anterior chamber puncture liquid-releasing intraocular pressure automatic control device |
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