CN211096872U - Casing type under-tenon-capsule anesthesia apparatus - Google Patents

Abstract

The utility model relates to an ophthalmology clinical treatment technical field specifically discloses a bushing type anesthesia ware under eyeball fascia, the anesthesia ware constitute by syringe needle, needle file, needle tubing, push rod, piston, inner core and inner core cap, syringe needle head be the glossy curved surface of round blunt, and with needle file fixed connection, the needle file fix on the needle tubing, the inside of needle tubing is provided with push rod and piston, the front end and the piston of push rod meet, the shape of inner core front end is the cutting edge type of passivation, the rear end and the inner core cap fixed connection of inner core, the shape of inner core cap be oblate cylindricality, still be provided with anti-skidding screw thread in the side of inner core cap. Its advantages are: the utility model discloses can fully laminate the radian of people's eyeball wall, reduce its resistance of marcing between fascia and sclera, play the effect in abundant blunt nature separation sclera upper gap, the anesthetic backward flow that effectively avoids the separation to produce when insufficient simultaneously annotates the medicine and arouses anterior bulbar conjunctiva and fascia uplift edema.

Description

Casing type under-tenon-capsule anesthesia apparatus

Technical Field

The utility model belongs to the technical field of ophthalmology clinical treatment technique and specifically relates to a anesthesia ware under eyeball's manadesma of bushing type.

Background

In ophthalmic internal eye surgery, sufficient anesthesia is a necessary guarantee for smooth operation. For a long time, retrobulbar anesthesia is mostly adopted in internal eye surgery, which requires that an injection needle is penetrated into an orbit through skin, and anesthetic is injected around the retrobulbar ciliary ganglion. However, this type of anesthesia can cause various complications, such as optic nerve damage, eyeball perforation, retrobulbar hemorrhage, and even general side effects due to anesthesia. The sub-fascial anesthesia has the same effect as the retrobulbar anesthesia, and the former has the advantages of small dosage of anesthetic, light pain and no serious operation complications, and is increasingly applied to the intraocular surgery in recent years. Sub-tenon anesthesia involves cutting the bulbar conjunctiva and inserting a needle through the cut bulbar conjunctiva to inject an anesthetic between the fascia and sclera at the back of the equator of the eyeball. At present, no injector and injection needle matched with the artificial eye are available in clinic, and the artificial eye can be replaced by a blunt lacrimal passage injection needle, but the bending angle of the needle is designed to be attached to the lacrimal passage of a human body, and the needle cannot be attached to the radian of the wall of the eyeball, is difficult to travel when passing between the fascia and the sclera, and is easy to cause subconjunctival hemorrhage and retrobulbar hemorrhage.

Retrieving prior art, patent publication No.: CN206597198U discloses an injection device for eye injection, which comprises an injector, the injector comprises a syringe and a plunger, the front section of the inner cavity of the syringe comprises a water cavity and a liquid medicine cavity which are separated by a partition board. The front end surface of the syringe is provided with a first needle head and a second needle head. Be equipped with between first syringe needle and the aqueous humor chamber and be used for making the two at first syringe needle to aqueous humor chamber direction one-way conduction's first check valve, be equipped with between second syringe needle and the liquid medicine chamber and be used for making the two at liquid medicine chamber to second syringe needle direction one-way conduction's second check valve. The device mainly solves the technical problems that eye injection medication is complex to operate and intraocular pressure cannot be adjusted in real time. But the device can not be attached to the radian of the eyeball wall, and has the disadvantages of troublesome operation, higher risk and easy occurrence of symptoms such as hematoma to the eyeball after the operation. Its patent publication no: CN208989349U discloses an ophthalmology Tenons bag anesthesia syringe needle, the ophthalmology Tenons bag anesthesia syringe needle belongs to the anesthesia syringe needle field that ophthalmic surgery used, including needle file, needle body. The needle body is in a circular arc design which is close to the eyeball wall, the surface of the needle body is provided with scales, and the needle tip end surface of the needle body is a round passivated end surface; the injection hole of the needle tip end face is a flat-open round hole or an obliquely-open elliptical hole; the arc section of the front part of the needle body is provided with an auxiliary needle hole. The anesthesia needle head solves the problems that the anesthesia needle head can enter a tenon capsule more easily and safely in an operation, the structure is simple, the anesthesia effect is good and the like, but the needle tip of the device is a round passivated end face, the interior of the device is hollow, the structure is too wide and blunt, large resistance is easily met in the needle inserting process, and the gap on the sclera cannot be separated fully; and the auxiliary needle hole is arranged on the surface of fascia, so that the anterior bulbar conjunctiva and fascia swelling and edema caused by anesthetic reflux are easy to cause. In view of the above, there is a need for a casing-type sub-tenon's capsule that fits the curvature of the human eyeball wall, that can smoothly dive between the fascia and the sclera, that does not easily damage the peripheral blood vessels, and that effectively avoids the swelling and edema of the anterior bulbar conjunctiva and the fascia due to the reflux of anesthetic generated by insufficient separation. However, there is no report on the new type of anesthetic device.

Disclosure of Invention

The utility model aims at providing a anesthesia ware under cover of sleeve type tenon's membrane, anesthesia ware laminating people's eyeball wall radian under this cover of sleeve type tenon's membrane, the head is blunt, can sneak in smoothly between fascia and sclera, and difficult damage blood vessel on every side, bushing type structure can make the sclera on the back of the clearance separation is abundant reinjection anesthetic, the anesthetic backward flow that can effectively avoid the separation to annotate the production when insufficient arouses anterior bulbar conjunctiva of eyeball and fascia uplift edema, the success rate and the security of anesthesia under the complete aspect improvement tenon's membrane.

In order to achieve the purpose, the utility model adopts the technical proposal that:

the utility model provides a bushing type anesthesia ware under tenon's capsule, the anesthesia ware constitute by syringe needle, needle file, needle tubing, push rod, piston, inner core and inner core cap, the anesthesia ware total length is 10-12cm, syringe needle head be the glossy curved surface of round blunt, flat oval is personally submitted in its cross-section, and with needle file fixed connection, the needle file fix on the needle tubing, the inside of needle tubing is provided with push rod and piston, the front end and the piston of push rod meet, and both inside hollow structure that is, its inner core therefrom passes, the shape of inner core front end is gradually become flat for the cutting edge type of passivation, and the flat oval is personally submitted to the transversal cross section, the rear end and the inner core cap fixed connection of inner core, the shape of inner core cap be oblate cylindrical, still be provided with anti-skidding screw thread in the side of inner core cap.

In the cannula type sub-tenon anesthesia apparatus, as a preferred scheme, the needle head and the needle seat are made of stainless steel, the front end of the needle head is an arc-shaped curved surface, the curvature radius is 11-14mm, and the arc length is 10-15 mm.

In the cannula-type sub-tenon anesthesia apparatus, preferably, the needle tube is provided with a graduation mark a on the surface.

In the above cannula-type sub-tenon's capsule anesthetic apparatus, preferably, the inner core is made of an elastically bendable steel wire.

In the cannula-type sub-tenon anesthesia apparatus, preferably, the size of the plunger is matched with the diameter of the inside of the needle tube.

In the cannula-type sub-tenon anesthesia apparatus, as a preferable mode, the needle head is further provided with a scale mark B.

The utility model has the advantages that:

1. the front end of the injection needle of the utility model is curved in an arc shape, the cross section of the injection needle is flat and elliptical, the injection needle is more suitable for the radian of the eyeball wall of a human body, and the shape design can reduce the resistance of the injection needle in the advancing process between the fascia and the sclera; the head of the injection needle is round and blunt, no cutting effect exists, blood vessels around eyes are not damaged, and the eyeballs are not punctured.

2. The inner core of the middle sleeve type structure of the utility model is closely attached to the syringe needle, the cross section is in a flat ellipse shape, the front end is gradually flattened to be similar to a passivated cutting edge, the arrangement is favorable for the smoothness of needle insertion, and the function of fully and dully separating the upper gap of the sclera can be realized; and after the inner core is withdrawn, the injection needle is in a hollow state, so that the injection is convenient. The design can effectively avoid the edemas of bulbar conjunctiva and fascia at the front part of the eyeball caused by the anesthesia reflux generated by medicine injection when the separation is insufficient while reserving enough medicine injection channels.

3. The utility model discloses well inner core rear end still is equipped with inner core cap structure, through grabbing the inner core cap, can adjust the length of inner core in the syringe, and certain resistance when the inner core is pushed and pulled in the syringe, and the inner core can not produce the removal under no exogenic action, guarantees the safety when using.

Drawings

Fig. 1 is a schematic structural view of the middle cannula type sub-tenon's capsule anesthesia apparatus of the present invention.

Fig. 2 is a schematic cross-sectional view of the needle and the inner core of the middle cannula sub-tenon's capsule anesthesia apparatus of the present invention.

Fig. 3 is a schematic diagram illustrating the withdrawal of the inner core of the cannula sub-tenon's capsule of the present invention.

Fig. 4 is a partial schematic view of the front end of the needle and inner core combination of the middle cannula type sub-tenon's capsule anesthesia apparatus of the present invention.

Fig. 5 is a schematic view of the middle cannula sub-tenon's capsule anesthesia apparatus of the present invention.

Fig. 6 is a schematic view of the needle of the middle cannula sub-tenon's capsule anesthesia apparatus of the present invention.

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.

The reference numerals and components referred to in the drawings are as follows:

1. needle 2, needle seat 3, needle tube

4. Push rod 5, piston 6, inner core

7. Inner core cap 8, scale mark A9, scale mark B

EXAMPLE 1A cannula-type sub-tenon's capsule anesthetic device

Referring to fig. 1-5, fig. 1 is a schematic structural view of a middle cannula type sub-tenon's capsule anesthetic device according to the present invention. Fig. 2 is a schematic cross-sectional view of the needle and the inner core of the middle cannula sub-tenon's capsule anesthesia apparatus of the present invention. Fig. 3 is a schematic diagram illustrating the withdrawal of the inner core of the cannula sub-tenon's capsule of the present invention. Fig. 4 is a partial schematic view of the front end of the needle and inner core combination of the middle cannula type sub-tenon's capsule anesthesia apparatus of the present invention. Fig. 5 is a schematic view of the middle cannula sub-tenon's capsule anesthesia apparatus of the present invention.

The utility model provides a bushing type anesthesia ware under tenon's capsule, the anesthesia ware constitute by syringe needle 1, needle file 2, needle tubing 3, push rod 4, piston 5, inner core 6 and inner core cap 7, anesthesia ware total length be 12cm, 1 head of syringe needle be the glossy curved surface of rounding, its cross section is flat oval, and with needle file fixed connection, the radian of the more laminating eyeball wall of setting up of 1 shape of this syringe needle reduces its resistance of marcing between fascia and sclera, is favorable to advancing the smoothness of needle, has avoided puncturing the eyeball and has caused the injury to the patient. Needle file 2 fix on needle tubing 3, the inside of needle tubing 3 is provided with push rod 4 and piston 5, the front end and the piston 5 of push rod 4 meet, and both insides are hollow structure, and its inner core 6 passes therefrom, the shape of inner core 6 front end is from syringe needle 1 and the link of needle file 2 to syringe needle 1 gradually flat for the blade type of passivation, and the transversal flat ellipse that personally submits, should set up the effect that can play abundant blunt nature separation sclera upper gap, and after the inner core withdrawed from, injection syringe needle 1 is hollow state, conveniently injects the medicine for the patient. The design can effectively avoid the swelling and edema of the bulbar conjunctiva and the fascia at the front part of the eyeball caused by the reflux of the anesthetic generated by injecting the medicine when insufficient separation is realized while reserving an enough medicine injection channel, thereby improving the success rate of the anesthesia under the fascia of the eyeball and the safety after the operation. The rear end of the inner core 6 is fixedly connected with the inner core cap 7, the inner core cap 7 is flat cylindrical or circular, an operator can adjust the length of the inner core in the syringe by grasping the inner core cap 7, the inner core 6 has certain resistance when being pushed and pulled in the syringe, the inner core cannot move under the action of no external force, and the safety in use is ensured. The side surface of the inner core cap 7 is also provided with anti-skid threads. The anti-skidding thread can increase the friction force between an operator and the inner core cap, and prevent the anesthetic device from slipping in the operation process and causing injury to eyes of a patient. In this embodiment, preferably, the needle head and the needle seat are both made of stainless steel materials with certain hardness and plasticity (stainless steel materials same as other ophthalmic microscopic instruments), and the front end of the needle head is an arc-shaped curved surface with a curvature radius of 12.5mm and an arc length of 12 mm. In this embodiment, the surface of the needle tube is preferably provided with a graduation line A8. The device can clearly observe the amount of the medicine needed to be injected by the patient, and avoids the waste of the medicine. In this embodiment, the inner core 6 is preferably made of an elastically bendable steel wire. The material can be GGr15(GCr15 refers to high-carbon chromium bearing steel with less alloy content, and the high-carbon chromium bearing steel has higher hardness, uniform structure, good wear resistance and high contact fatigue performance after quenching and low-temperature tempering). In this embodiment, the piston 4 is preferably sized to match the diameter of the inside of the barrel 3.

EXAMPLE 2 canula type submuscule anesthesia apparatus (II)

Fig. 6 is a schematic view of the needle of the cannula sub-tenon's capsule anesthetic device of the present invention shown in fig. 6.

The structure of the cannula sub-tenon's capsule anesthesia apparatus in this embodiment is substantially the same as that in the above embodiment, except that: the needle head of the cannula type sub-tenon's capsule anesthesia apparatus is also provided with a scale mark B9, and the scale mark B9 represents different needle insertion depths, so that the position of the needle head reaching the eyeball wall can be better sensed, and the success rate of sub-tenon's capsule anesthesia and the postoperative safety can be improved.

The utility model discloses a use method: in ophthalmic internal eye surgery, a surface anesthetic is first dropped into eyes, and a sub-fascial anesthetic is prepared in the waiting process: the inner core cap 7 is grasped to lead the inner core 6 to retreat to the piston part 5, a proper amount of anesthetic is extracted, and then the inner core 6 is pushed into the needle head 1 until the front end of the inner core 6 slightly protrudes out of the front end of the needle head 1. The bulbar conjunctiva is cut at a position 7-8 mm behind the corneal limbus between 1-2 points, the needle is inserted from the position, the inner core 6 is retracted to the piston part 5 after reaching the equator of the eyeball, the push rod is pushed to slowly inject anesthetic, and then the needle head is withdrawn from the eye to complete related anesthetic operation.

It should be noted that: the utility model discloses simple structure, low cost. The cannula type sub-tenon's capsule is complete in shape and size and is mainly suitable for ophthalmic internal eye related operations. The front end of the needle head of the cannula type sub-tenon's capsule anesthetic is curved in an arc shape, the cross section of the needle head is in a flat ellipse shape, the radian of the needle head is more fit with the human eyeball wall, and the resistance of the needle head in advancing between the fascia and the sclera can be reduced due to the shape design; the head of the injection needle is round and blunt, no cutting effect exists, blood vessels around eyes are not damaged, and the eyeballs are not punctured. The shape of inner core front end is flat for the blade type of passivation gradually from the link of syringe needle and needle file to the syringe needle, and the transversal flat ellipse of personally submitting, should set up and can play the effect in sufficient blunt nature separation sclera upper gap, and in addition after the inner core withdraws from, the injection syringe needle is the cavity state, conveniently injects the medicine for the patient. The design can effectively avoid the swelling and edema of the bulbar conjunctiva and the fascia at the front part of the eyeball caused by the reflux of the anesthetic generated by injecting the medicine when insufficient separation is realized while reserving an enough medicine injection channel, thereby improving the success rate of the anesthesia under the fascia of the eyeball and the safety after the operation. The inner core rear end of this anesthesia ware under tenon's capsule is equipped with inner core cap structure, through grabbing the inner core cap, can adjust the length of inner core in the syringe, and the inner core has certain resistance when pushing and pulling in the syringe, and the inner core can not produce the removal under no exogenic action, guarantees the safety of patient when using.

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 (6)

1. The utility model provides a bushing type anesthesia ware under tenon's capsule, a serial communication port, the anesthesia ware constitute by syringe needle, needle file, needle tubing, push rod, piston, inner core and inner core cap, the anesthesia ware total length is 10-12cm, syringe needle head be the smooth curved surface of round blunt, its cross section is flat oval, and with needle file fixed connection, the needle file fix on the needle tubing, the inside of needle tubing is provided with push rod and piston, the front end and the piston of push rod meet, and both inside hollow structure that is, its inner core therefrom passes, the shape of inner core front end is gradually flattened to the cutting edge type of passivation, and transversal flat oval of personally submitting, the rear end and the inner core cap fixed connection of inner core, the shape of inner core cap be oblate cylindrical, still be provided with anti-skidding screw thread in the side of inner core cap.

2. The cannula sub-tenon anesthesia apparatus of claim 1, wherein the needle head and the needle seat are made of stainless steel, the front end of the needle head is an arc-shaped curved surface, the radius of curvature is 11-14mm, and the arc length is 10-15 mm.

3. The cannula-type sub-tenon's capsule anesthetic device according to claim 1, wherein a scale line a is provided on a surface of the needle tube.

4. The cannula sub-tenon's capsule anesthetic device of claim 1, wherein the inner core is made of an elastically bendable steel wire.

5. The telescopic sub-tenon's capsule anesthetic device of claim 1, wherein said plunger is sized to match a diameter of an inside of the needle cannula.

6. The cannula sub-tenon anesthesia of any one of claims 1-5, wherein said needle is further provided with a graduation mark B.

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