Subfascial anesthesia scissors and injection scissors

Abstract

The subfascial anesthesia cutting and injection integrated scissors relate to the technical field of medical devices for ophthalmic surgery, including microscissors with two blades; one side of one of the blades is fixedly connected to an anesthesia injection tube, which extends upward in parallel with the length direction of the blade, with its lower end close to the tip of the blade, and the upper end extends to the end of the blade and then separates from the blade, and hangs outside the blade; the upper end of the anesthesia injection tube is connected to the syringe of the syringe through a connecting tube. During the operation, subfascial anesthesia can achieve the one-time completion of cutting the bulbar conjunctiva, separating the fascia, and injecting anesthetics. There is no need to withdraw the scissors and then use a needle to find the opening of the fascial sac, which avoids the problem of fascial tissue accumulation covering the injection incision after withdrawing the head of the scissors, resulting in difficulty in injecting anesthetics, making the operation simple and reducing complications of anesthesia operations.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments for ophthalmic surgery, in particular to a subfascial anesthesia cutting and injection integrated scissors. Background Art

[0002] Good anesthesia is essential in ophthalmic surgery. There are three types of anesthesia: topical anesthesia, general anesthesia, and local anesthesia. The most widely used is local anesthesia, which is well performed without any intravenous administration, can reduce the risk of systemic medication and has a fast postoperative recovery. Traditional local anesthesia includes retrobulbar block anesthesia and peribulbar anesthesia. Both methods have the following complications: 1. Retrobulbar and peribulbar bleeding, resulting in cancellation or delay of surgery, which will eventually lead to patient frustration, loss of confidence in doctors, or medical disputes; 2. Cause perforation of the eyeball, especially in patients with high myopia.

[0003] Subfascial anesthesia also has a good effect of relieving eye pain. The advantage is that it does not require injection into the retrobulbar or orbital cavity, which makes the doctor feel calm. It will not puncture nerves, blood vessels, or eyeball walls, causing optic nerve damage, retrobulbar or peribulbar bleeding, or eyeball perforation. It is especially safer for patients with high myopia who have large eyeballs and thin scleral walls. In case of intraoperative pain or incomplete anesthesia, additional anesthetics are safe and convenient, and will not cause intraoperative amaurosis. Eye tissues and vision recover quickly, and there is no obvious postoperative eye pain.

[0004] The mechanism of subbulbar anesthesia is to infiltrate and permeate the anesthetic through the subbulbar fascia, anesthetize the extraocular muscles and the nerves they control, produce analgesia, and brake the eyeball, and achieve the ideal anesthetic effect. The method of anesthesia is: routine intraocular surgery preoperative preparation, after preparing the anesthetic drugs, first use ophthalmic microscissors to cut the conjunctiva about 3mm in the temporal or inferotemporal near the dome, separate the fascia to the sclera surface with scissors, and then use a syringe with anesthetics drawn to connect the curved needle, and inject about 1-2ml of anesthetic between the fascia and the sclera toward the equator of the eyeball. At this time, the fascia is full of liquid, and there is no need to pressurize the eyeball.

[0005] However, the difficulty of this operation lies in that after cutting the bulbar conjunctiva, separating the fascia tissue and withdrawing the scissors, the fascia tissue tends to accumulate on the incision surface due to its tissue characteristics, making it difficult to identify the separation opening from the fascia to the sclera, making it difficult for the curved needle for injecting anesthetics to quickly and accurately enter the space between the fascial capsule and the sclera, and sometimes the anesthetic may mistakenly enter the fascial capsule, causing local swelling and bulge that affect the surgical operation; moreover, the curved needle used is sometimes sharp at the tip, which may scratch the ocular surface tissue. Utility Model Content

[0006] In view of the problems and shortcomings in the prior art, the utility model provides a subfascial anesthesia cutting and injection integrated scissors.

[0007] The technical solution of this utility model is as follows:

[0008] Subfascial anesthesia cutting and injection integrated scissors, including microsurgery scissors, with two scissor heads;

[0009] One side of the blade of one of the scissor heads is fixedly connected to an anesthetic injection tube, which extends upward in parallel with the length direction of the blade, with its lower end close to the tip of the scissor head, and its upper end extends to the end of the scissor head and then separates from the scissor head, and hangs outside the scissor head, and is connected to the syringe barrel of the syringe through a connecting tube.

[0010] Working principle: During the preoperative anesthesia operation in ophthalmology, the blade of the microscissors is used to separate the fascial tissue and enter between the fascial sac and the sclera. After that, the scissor head does not need to be removed but remains in the incision. Then, the assistant or your other hand injects the anesthetic with a syringe. This solves the problem that the fascial tissue accumulates on the surface of the incision after the scissors leave the incision, making it difficult to find the entrance of the fascia and sclera. During the operation, subfascial anesthesia can be completed in one go, including cutting the bulbar conjunctiva, separating the fascia, and injecting the anesthetic. There is no need to withdraw the scissors and then use a needle to find the opening of the fascial sac. This avoids the problem that the fascial tissue accumulates and covers the injection incision after the scissors head is withdrawn, making the injection of anesthetic difficult. This simplifies the operation and reduces the complications of the anesthesia operation.

[0011] According to a specific embodiment, the length of the overhanging portion at the upper end of the anesthesia injection tube is not less than 5 mm, so that the anesthesia injection tube is connected to the syringe through the connecting tube. More preferably, the overhanging portion at the upper end of the anesthesia injection tube is bent toward the outside of the fine scissors.

[0012] Specifically, the length of the upper end of the anesthesia injection tube bent outward is not less than 4mm. It is convenient to connect with the connecting tube. The preferred embodiment is that the length of the upper end of the anesthesia injection tube is 4-5mm, which is convenient for connection and will not be damaged by collision with other instruments when placed due to being too long.

[0013] In order to meet the requirements of preoperative anesthesia in ophthalmology without damaging the periocular tissue, the outer diameter of the anesthesia injection tube is 0.8-1.2 mm, and preferably 1 mm in this embodiment.

[0014] In order to facilitate the anesthetic to enter the tissue incision through the tube opening at the lower end of the anesthesia injection tube, a preferred embodiment is that the distance between the lower end of the anesthesia injection tube and the tip of the scissors head is: 0.5-1mm.

[0015] Specifically, the anesthesia injection tube is a thin flat tube made of metal material, fixed on the blade of the scissors head and leaving a gap with the cutting edge of the blade. In a specific implementation, the anesthesia injection tube can be made of stainless steel or titanium alloy material, and fixedly connected to the scissors head of the microscissors by welding, and leaving a gap with the cutting edge of the blade of the scissors head to prevent the anesthesia injection tube from affecting the cutting function of the blade.

[0016] The connecting pipe adopts a non-metallic hose, one end of which is connected to the upper end of the anesthesia injection pipe through a sleeve. Specifically, the connecting pipe can be made of transparent rubber or silicone hose.

[0017] The beneficial effects of the utility model are:

[0018] When using this subfascial anesthesia cutting and injection scissors, the fascia tissue is separated by the blades of the microscissors, and then the anesthetic is directly injected into the tissue incision through the anesthetic injection tube fixed thereon, so that subfascial anesthesia can be completed in one go during the operation by cutting the bulbar conjunctiva, separating the fascia, and injecting anesthetics. There is no need to withdraw the scissors and then use a needle to find the opening of the fascial sac, which avoids the problem of fascial tissue accumulation covering the injection incision after the scissors head is withdrawn, making the injection of anesthetics difficult. This simplifies the operation and reduces complications of the anesthesia operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment;

[0020] 1. Microscissors; 11. Scissor head; 2. Anesthesia infusion tube; 3. Connecting tube; 4. Syringe. DETAILED DESCRIPTION

[0021] The following will further describe the technical means adopted to achieve the predetermined inventive purpose of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0022] See also Figure 1 As shown, the subfascial anesthesia cutting and injection integrated scissors include a microscissors 1 having two scissor heads 11;

[0023] One side of the blade of one of the scissor heads 11 is fixedly connected to an anesthesia injection tube 2, and the anesthesia injection tube 2 extends upward in parallel with the length direction of the blade, with its lower end close to the tip of the scissor head 11, and its upper end extends to the end of the scissor head 11 and then separates from the scissor head 11, and hangs outside the scissor head 11, and is connected to the syringe of the syringe 4 through the connecting tube 3.

[0024] Working principle: During the anesthesia operation before ophthalmology, the blade of the microscissors 1 is used to separate the fascia tissue and enter between the fascial capsule and the sclera. After that, the scissor head 11 of the scissors does not need to be removed but remains in the incision, and then the assistant or the other hand of the user injects the anesthetic with the syringe 4. This solves the problem that the fascia tissue accumulates on the surface of the incision after the scissors leave the incision, making it difficult to find the entrance of the fascia and sclera. During the operation, the subfascial anesthesia can be completed at one time by cutting the bulbar conjunctiva, separating the fascia, and injecting the anesthetic. There is no need to withdraw the scissors and then use the needle to find the opening of the fascial capsule, which avoids the problem that the fascia tissue accumulates and covers the injection incision after the scissor head 11 is withdrawn, making the injection of anesthetic difficult. The operation is simple and the complications of the anesthesia operation are reduced.

[0025] According to a specific embodiment, the length of the overhanging portion at the upper end of the anesthesia injection tube 2 is not less than 5 mm, so that the anesthesia injection tube 2 is connected to the syringe 4 through the connecting tube 3. More preferably, the overhanging portion at the upper end of the anesthesia injection tube 2 is bent toward the outside of the fine scissors.

[0026] Specifically, the length of the upper end of the anesthesia injection tube 2 bent outward is not less than 4 mm. It is convenient to connect with the connecting tube 3. In a preferred embodiment, the length of the upper end of the anesthesia injection tube 2 is 4-5 mm, which is convenient for connection and will not be damaged by collision with other instruments when placed due to being too long.

[0027] In order to meet the requirements of ophthalmic preoperative anesthesia without damaging the periocular tissue, the outer diameter of the anesthesia injection tube 2 is 0.8-1.2 mm, and preferably 1 mm in this embodiment.

[0028] In order to facilitate the anesthetic to enter the tissue incision through the tube opening at the lower end of the anesthesia injection tube 2, a preferred embodiment is that the distance between the lower end of the anesthesia injection tube 2 and the tip of the scissors head 11 is: 0.5-1mm.

[0029] Specifically, the anesthesia injection tube 2 is a thin flat tube made of metal material, fixed on the blade of the scissors head 11 and leaving a gap with the cutting edge of the blade. In a specific implementation, the anesthesia injection tube 2 can be made of stainless steel or titanium alloy material, and fixedly connected to the scissors head 11 of the microscissors 1 by welding, and leaving a gap with the cutting edge of the blade of the scissors head 11 to prevent the anesthesia injection tube 2 from affecting the cutting function of the blade.

[0030] The connecting pipe 3 is a non-metallic hose, one end of which is connected to the upper end of the anesthesia injection tube 2 through a sleeve. Specifically, the connecting pipe 3 can be made of a transparent rubber or silicone hose.

[0031] The above is a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments and examples. Various changes, equivalent substitutions, improvements, etc. made within the knowledge scope of those skilled in the art without departing from the concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A subfascial anesthesia cutting and injection integrated scissors, comprising a microscissor (1) having two scissor heads (11), characterized in that: One side of the blade of one of the scissor heads (11) is fixedly connected to an anesthesia injection tube (2), the anesthesia injection tube (2) is parallel to the length direction of the blade and extends upward, the lower end of the anesthesia injection tube (2) is close to the tip of the scissor head (11), the upper end extends to the end of the scissor head (11) and then separates from the scissor head and hangs outside the scissor head, and is connected to the syringe of the syringe (4) through a connecting tube (3).

2. The integrated scissors according to claim 1, characterized in that: The length of the hanging part at the upper end of the anesthesia infusion tube (2) is not less than 5 mm.

3. The integrated scissors according to claim 1, characterized in that: The hanging portion at the upper end of the anesthesia infusion tube (2) is bent toward the outside of the scissor head (11).

4. The integrated scissors according to claim 3, characterized in that: The length of the outwardly bent portion of the upper end of the anesthesia infusion tube (2) is not less than 4 mm.

5. The integrated scissors according to claim 4, characterized in that: The length of the curved portion at the upper end of the anesthesia infusion tube (2) is 4-5 mm.

6. The integrated scissors according to any one of claims 1 to 5, characterized in that: The outer diameter of the anesthesia injection tube (2) is 0.8-1.2 mm.

7. The integrated scissors according to claim 6, characterized in that: The distance between the lower end of the anesthesia injection tube (2) and the tip of the scissors head (11) is 0.5-1 mm.

8. The integrated scissors according to claim 7, characterized in that: The anesthesia infusion tube (2) is a thin flat tube made of metal material, fixed on the blade of the scissors head and leaving a gap with the shearing edge of the blade.

9. The integrated scissors according to claim 8, characterized in that: The connecting pipe (3) is a non-metallic hose, one end of which is connected to the upper end of the anesthesia injection tube (2) through a sleeve.

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