CN214484804U - Injection needle for filling viscoelastic agent and perfusate in ophthalmologic operation - Google Patents

Abstract

The utility model discloses an ophthalmic surgery fills syringe needle of viscoelastic agent and perfusate, including syringe needle body and pressure monitor, the syringe needle body comprises syringe needle pipe A and syringe needle pipe B who communicates with syringe needle pipe A, syringe needle pipe A becomes a contained angle with syringe needle pipe B, syringe needle pipe A tip has grafting portion, syringe needle pipe B tip has first mouth of pipe, be equipped with miniature pressure sensor A on the first mouth of pipe, syringe needle body pipe wall is equipped with first circuit chamber along length direction, be equipped with the first signal line that is used for connecting miniature pressure sensor A and pressure monitor in the first circuit chamber. The utility model discloses can realize adopting two kinds of materials of viscoelastic agent, perfusate to inject into the specific area in the eyeball respectively, can monitor the intraocular pressure of eyeball respectively through miniature pressure sensor B, miniature pressure sensor A, be convenient for in time maintain the intraocular pressure balanced and protect the eyeball structure, create safe operation condition for ophthalmic surgery.

Description

Injection needle for filling viscoelastic agent and perfusate in ophthalmologic operation

Technical Field

The utility model relates to an ophthalmology medical instrument field especially relates to an ophthalmic surgery fills syringe needle of viscoelastic agent and perfusate.

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 transferred 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.

SUMMERY OF THE UTILITY MODEL

The weak point that exists to prior art, the utility model aims to provide an ophthalmic surgery fills syringe needle of viscoelastic agent and perfusate, the syringe needle body has interior syringe needle pipe, and wherein the lumen of interior syringe needle pipe can be for viscoelastic agent filling channel, and the syringe needle body removes the lumen of interior syringe needle pipe and corresponds promptly for the perfusate filling channel, and the syringe needle body just has the filling channel that viscoelastic agent, two kinds of materials of perfusate correspond respectively like this, can realize the operation of injecting into of corresponding of two kinds of materials respectively with the cooperation of injector.

The purpose of the utility model is realized through the following technical scheme:

the injection needle for filling the viscoelastic agent and the perfusion solution in the ophthalmic surgery comprises a needle body and a pressure monitor, wherein the needle body consists of a needle tube A and a needle tube B communicated with the needle tube A, the needle tube A and the needle tube B form an included angle, the end part of the needle tube A is provided with an insertion part, 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, the tube wall of the needle body is provided with a first line cavity along the length direction, and a first signal line for connecting the miniature pressure sensor A and the pressure monitor is arranged in the first line cavity.

In order to better realize the utility model discloses, miniature pressure sensor A is the barrel shape, miniature pressure sensor A is fixed locates first mouth of pipe tip, miniature pressure sensor A's barrel cavity, syringe needle pipe B's lumen, syringe needle pipe A's lumen communicate in proper order.

In order to realize better the utility model discloses, be equipped with interior syringe needle pipe in syringe needle pipe A's the lumen, interior syringe needle pipe is close to the mouth of pipe and the grafting portion terminal surface parallel and level of grafting portion, interior syringe needle pipe other end mouth of pipe is the second mouth of pipe, the second mouth of pipe passes syringe needle pipe A's pipe wall and is equipped with miniature pressure sensor B on the second mouth of pipe, syringe needle pipe A pipe wall is equipped with second circuit chamber along length direction, be equipped with the second signal line that is used for connecting miniature pressure sensor B and pressure monitor in the second circuit chamber.

The further technical scheme is as follows: the end face of the inserting part is fixedly provided with a separating inserting plate.

The further technical scheme is as follows: the miniature pressure sensor B is in a cylinder shape, the end part of the second pipe orifice is arranged on the miniature pressure sensor B, and a cylinder cavity of the miniature pressure sensor B is communicated with a pipe cavity of the inner needle pipe.

Preferably, the top surface of the inner needle tube is a horizontal surface, and the top surface of the inner needle tube is located in the middle of the lumen of the needle tube A.

Preferably, an air pressure detector is further connected to the pressure monitor.

Compared with the prior art, the utility model, have following advantage and beneficial effect:

(1) the utility model discloses be equipped with miniature pressure sensor A at first mouth of pipe tip, when filling and filling viscoelastic agent or perfusate, can carry out real-time supervision to the intraocular pressure of patient eyeball inside, be convenient for control injection volume and protection eyeball.

(2) The utility model discloses a syringe needle body has interior syringe needle pipe, and wherein the lumen of interior syringe needle pipe can fill the passageway for the viscoelastic agent, and the syringe needle body removes the lumen of interior syringe needle pipe and corresponds promptly for the perfusate fills the passageway, and the syringe needle body just has the filling passageway that two kinds of materials of viscoelastic agent, perfusate correspond respectively like this, can realize the corresponding injection operation of two kinds of materials respectively with the cooperation of injector.

(3) The utility model discloses can realize adopting two kinds of materials of viscoelastic agent, perfusate to inject into to the specific region in the eyeball respectively, maintain the intraocular pressure balance, protect the eyeball structure, create good, safe operation condition for ophthalmic surgery.

(4) The utility model discloses when the pressure in posterior chamber, vitreous body region, anterior chamber region reduces in the eyeball, can accurately learn respectively through miniature pressure sensor B, miniature pressure sensor A to correspond the replenishment and pour into perfusate or viscoelastic agent, and in time maintain the intraocular pressure balanced and protect the eyeball structure.

(5) The utility model discloses a second mouth of pipe is located syringe needle body middle part position, and first mouth of pipe is located syringe needle body front end position, can once insert the eyeball, can realize that first mouth of pipe corresponds and arranges patient's eyeball posterior chamber, vitreous cavity region in, and the second mouth of pipe corresponds and arranges patient's eyeball anterior chamber region in, has improved the operation security.

Drawings

FIG. 1 is a schematic diagram of a human eyeball tissue structure;

FIG. 2 is a schematic structural diagram according to a first embodiment;

FIG. 3 is a schematic perspective view of a needle body according to a second embodiment;

FIG. 4 is a cross-sectional view of the needle body with the pressure monitor attached according to the second embodiment;

FIG. 5 is an enlarged fragmentary view of FIG. 4 at the location of the first orifice;

FIG. 6 is an enlarged fragmentary view of FIG. 4 at the second nozzle location;

FIG. 7 is an enlarged partial schematic view of FIG. 4 at the location of the insert;

fig. 8 is a schematic structural diagram of the third embodiment.

Wherein, the names corresponding to the reference numbers in the drawings are:

100-cornea, 101-anterior chamber, 102-iris, 103-lens capsular bag, 104-lens, 105-lens zonules, 106-posterior chamber, 107-incision, 108-vitreous cavity, 1-needle body, 2-needle tube A, 21-plug, 3-needle tube B, 31-first orifice, 32-micro pressure sensor A, 4-inner needle tube, 41-second orifice, 42-micro pressure sensor B, 5-separation plug board, 6-pressure monitor, 7-air pressure detector.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

example one

As shown in fig. 2, an injection needle for filling viscoelastic agent and perfusion fluid in an ophthalmic surgery comprises a needle body 1 and a pressure monitor 6, wherein the needle body 1 is composed of a needle tube a2 and a needle tube B3 communicated with the needle tube a2, the needle tube a2 and the needle tube B3 form an included angle, the end of the needle tube a2 is provided with an insertion part 21, the end of the needle tube B3 is provided with a first tube opening 31, the first tube opening 31 is provided with a micro pressure sensor a32, the tube wall of the needle body 1 is provided with a first circuit cavity along the length direction, and the first circuit cavity is provided with a first signal line for connecting the micro pressure sensor a32 and the pressure monitor 6.

The needle body 1 of the embodiment has only one channel (i.e. the lumen of the needle body 1), when in use, viscoelastic agent or/and perfusion fluid is injected into the needle body 1 through the injector, and then the needle body 1 is input into the anterior chamber 101, the posterior chamber 106 and the vitreous cavity 108 of the eyeball of the patient, the first nozzle 31 of the needle body 1 can be firstly extended into the anterior chamber 101 area of the eyeball of the patient, the viscoelastic agent is injected through the injector to fill the anterior chamber 101 area of the eyeball of the patient with the viscoelastic agent, meanwhile, the micro pressure sensor a32 measures the intraocular pressure in the anterior chamber 101 area of the eyeball of the patient in real time and transmits the intraocular pressure data of the area to the pressure monitor 6 for display, so as to control the filling amount of the viscoelastic agent to keep the viscoelastic pressure balance in the eye. Then the first pipe orifice 31 of the needle body 1 is extended into the areas of the posterior chamber 106 and the vitreous cavity 108 of the eyeball of the patient, the perfusion fluid is injected and filled into the areas of the posterior chamber 106 and the vitreous cavity 108 of the eyeball of the patient by injecting the perfusion fluid through an injector, meanwhile, the micro pressure sensor A32 measures the intraocular pressure of the areas of the posterior chamber 106 and the vitreous cavity 108 of the eyeball of the patient in real time and transmits the intraocular pressure data of the areas to the pressure monitor 6 for displaying, so that the injection filling amount is controlled to keep the pressure balance in the eye.

Example two

As shown in fig. 2, an injection needle for filling viscoelastic agent and perfusion fluid in an ophthalmic surgery comprises a needle body 1 and a pressure monitor 6, wherein the needle body 1 is composed of a needle tube a2 and a needle tube B3 communicated with the needle tube a2, the needle tube a2 and the needle tube B3 form an included angle, the end of the needle tube a2 is provided with an insertion part 21, the end of the needle tube B3 is provided with a first tube opening 31, the first tube opening 31 is provided with a micro pressure sensor a32, the tube wall of the needle body 1 is provided with a first circuit cavity along the length direction, and the first circuit cavity is provided with a first signal line for connecting the micro pressure sensor a32 and the pressure monitor 6. Of course, in this embodiment, a wire groove a (the wire groove a corresponds to the first circuit cavity) may be formed outside (i.e., on the outer tube wall) the needle body 1, and the first signal wire is arranged in the wire groove a, and then sealed and encapsulated.

The miniature pressure sensor A32 of this embodiment is the barrel shape, and miniature pressure sensor A32 is fixed and is located first mouth of pipe 31 tip, and miniature pressure sensor A32's barrel chamber, the lumen of needle tube B3, the lumen of needle tube A2 communicate in proper order.

As shown in fig. 3 and 4, an inner needle tube 4 is arranged in a lumen of the needle tube a2, a tube opening of the inner needle tube 4 close to the insertion part 21 is flush with an 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 a tube wall of the needle tube a2, a micro pressure sensor B42 is arranged on the second tube opening 41, a second line cavity is arranged on the tube wall of the needle tube a2 along the length direction, and a second signal line for connecting the micro pressure sensor B42 and the pressure monitor 6 is arranged in the second line cavity. As shown in fig. 5, the micro pressure sensor B42 of the present embodiment is in the shape of a cylinder, the micro pressure sensor B42 is mounted at the end of the second nozzle 41, and the cylinder cavity of the micro pressure sensor B42 is communicated with the lumen of the inner needle tube 4.

The utility model discloses a miniature pressure sensor A32, miniature pressure sensor B42 all adopt miniature pressure sensor or intraocular pressure sensor that is applicable to eyeball inside, if adopt the periodicals "sensor and microsystem", 2010(029)006, the small of the rare, Liu Jing etc. wherein the implantable intraocular pressure microsensor that introduces, if adopt the pressure sensor in the implantable intraocular pressure monitor that can supply glaucoma patient to use that mentions in hundred degrees encyclopedics "implantable intraocular pressure monitor" (search on the net "implantable intraocular pressure monitor", get into hundred degrees encyclopedics).

As shown in fig. 7, the end face of the insertion portion 21 of this embodiment is fixedly provided with a separation insertion plate 5, the top surface of the inner needle tube 4 is a horizontal plane, the top surface of the inner needle tube 4 is located at the middle position of the lumen of the needle tube a2, the separation insertion plate 5 is an extension plate of the top surface of the inner needle tube 4, and the separation insertion plate 5 extends out of the end of the needle body 1 for a distance, so as to effectively separate the lumen of the needle tube a2 from the lumen of the inner needle tube 4.

The lumen of needle pipe 4 can be the viscoelastic agent perfusion channel in this embodiment, and syringe needle body 1 removes the lumen of needle pipe 4 promptly and corresponds to the perfusate perfusion channel. When the needle is used, the needle body 1 is inserted into the eyeball of a patient through the incision 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 areas 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 facilitate the first nozzle 31 and the second nozzle 41 to be positioned in the corresponding areas, and the length dimensions 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 body.

Viscoelastic filling is achieved by injecting viscoelastic through a injector, and meanwhile, the miniature pressure sensor A32 measures the intraocular pressure of the area of the anterior chamber 101 of the eyeball of the patient in real time and transmits the intraocular pressure data of the area to the pressure monitor 6 for display, so that the viscoelastic filling amount can be controlled to keep the intraocular pressure balanced. The perfusion liquid is injected and filled in the areas of the posterior chamber 106 and the vitreous cavity 108 of the eyeball of the patient by injecting the perfusion liquid through the injector, meanwhile, the micro pressure sensor A32 measures the intraocular pressure of the areas of the posterior chamber 106 and the vitreous cavity 108 of the eyeball of the patient in real time and transmits the intraocular pressure data of the areas to the pressure monitor 6 for displaying, and the injection filling charge is conveniently controlled to keep the pressure balance in the eye.

EXAMPLE III

As shown in fig. 8, the present embodiment is different from the second embodiment in that: the pressure monitor 6 is also connected with an air pressure detector 7, namely, the air pressure detector 7 is added in the embodiment. The utility model discloses a pressure monitor 6 has the display screen, the display screen can show the pressure condition that miniature pressure sensor A32 surveyed, the pressure condition that miniature pressure sensor B42 surveyed and the pressure condition that air pressure detector 7 surveyed, air pressure detector 7 is used for monitoring outside air pressure, pressure monitor 6 is inside to have pressure contrast module, pressure contrast module compares outside air pressure and intraocular pressure to show the contrast result on pressure monitor 7's display screen. When viscoelastic filling agent is injected, the miniature pressure sensor A32 at the front end of the first nozzle 31 can measure the intraocular pressure of the area of the anterior chamber 101 of the eyeball of the patient in real time and transmit the intraocular pressure data of the area to the pressure monitor 6 for displaying; the pressure comparison module in the pressure monitor 6 compares the intraocular pressure measured by the miniature pressure sensor a32 with the external air pressure measured by the air pressure detector 7, and displays the comparison result on the display screen of the pressure monitor 6, so that the doctor can conveniently control the injection amount of the viscoelastic agent. When the filling perfusate is injected, the miniature pressure sensor B42 at the front end of the second nozzle 41 can measure the intraocular pressure of the area of the posterior chamber 106 and the vitreous cavity 108 of the eyeball of the patient in real time and transmit the data of the intraocular pressure of the area to the pressure monitor 6 for display; the pressure comparison module in the pressure monitor 6 compares the intraocular pressure measured by the miniature pressure sensor B42 with the external air pressure measured by the air pressure detector 7, and displays the comparison result on the display screen of the pressure monitor 6, so that the doctor can conveniently control the injection amount of the perfusate.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (7)

1. An injection needle head for filling viscoelastic agent and perfusate in an ophthalmic surgery, which is characterized in that: including syringe needle body (1) and pressure monitor (6), syringe needle body (1) comprises syringe needle pipe A (2) and syringe needle pipe B (3) with syringe needle pipe A (2) intercommunication, syringe needle pipe A (2) and syringe needle pipe B (3) become an contained angle, syringe needle pipe A (2) tip has grafting portion (21), syringe needle pipe B (3) tip has first mouth of pipe (31), be equipped with miniature pressure sensor A (32) on first mouth of pipe (31), syringe needle body (1) pipe wall is equipped with first circuit chamber along length direction, be equipped with the first signal line that is used for connecting miniature pressure sensor A (32) and pressure monitor (6) in the first circuit chamber.

2. The ophthalmic surgical injection needle for filling with viscoelastic and perfusion fluids of claim 1, further comprising: miniature pressure sensor A (32) are the barrel shape, miniature pressure sensor A (32) are fixed and are located first mouth of pipe (31) tip, the tube chamber of miniature pressure sensor A (32), the lumen of syringe needle pipe B (3), the lumen of syringe needle pipe A (2) communicate in proper order.

3. The ophthalmic surgical injection needle for filling with viscoelastic and perfusion fluids of claim 1, further comprising: 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 a pressure monitor (6) is arranged in the second line cavity.

4. The ophthalmic surgical injection needle of claim 3 filled with viscoelastic and perfusate, wherein: the end face of the inserting part (21) is fixedly provided with a separating inserting plate (5).

5. The ophthalmic surgical injection needle of claim 3 filled with viscoelastic and perfusate, wherein: the miniature pressure sensor B (42) is in a cylinder shape, and the miniature pressure sensor B (42) is arranged at the end part of the second pipe orifice (41).

6. The ophthalmic surgical injection needle of claim 3 filled with viscoelastic and perfusate, wherein: the top surface of the inner needle tube (4) is a horizontal plane, and the top surface of the inner needle tube (4) is positioned in the middle of the tube cavity of the needle tube A (2).

7. The injection needle for filling viscoelastic agent and perfusion fluid in the ophthalmic surgery according to any one of claims 1 to 6, wherein: the pressure monitor (6) is also connected with an air pressure detector (7).

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