Minimally invasive couple touching quantitative laser tracing multi-purpose puncture injection system

Abstract

The invention discloses a minimally invasive couple touching quantitative laser tracing multi-purpose puncture injection system which comprises a needle assembly, a positioning needle handle, a connecting tube and a medicine injector; a steel needle is integrally formed by a steel solid needle tip and a steel hollow needle tube; the outer surface of the steel hollow needle tube is provided with length scale marks; the side, close to the steel solid needle tip, of the steel hollow needle tube a lateral opening; the upper side and the lower side of the side opening form inclined planes respectively; the positioning needle handle is formed by a positioning needle handle connector portion, a positioning needle handle body portion, a positioning needle handle salient portion and a positioning needle handle tail portion; the connecting pipe comprises a hollow catheter, a positive pressure infusion connector and an injector interface; the medicine injector comprises an injector barrel and aninjector push body arranged in the injector barrel; and the injector barrel is integrally formed by an injector connector portion, an injector barrel portion and an injector protrusion portion. The minimally invasive couple touching quantitative laser tracing multi-purpose puncture injection system has the characteristics of simpleness and convenience in operation, high safety, couple structure, touching quantitation, laser tracing, multi-purpose puncture injection and the like.

Description

technical field [0001] The invention relates to the field of medical devices, and in particular provides a minimally invasive two-body tactile quantitative laser tracer multipurpose puncture injection system, which can be used for intravitreal and retrobulbar injections. Background technique [0002] A retrobulbar injection is an invasive procedure in which drugs are injected into specific areas behind the eyeball to achieve targeted therapeutic or anesthesia effects. This operation can be used alone for local treatment of various ophthalmic diseases, and can also be used for intraoperative anesthesia or therapeutic purposes, such as injection of anti-VEGF drugs, hormones, local anesthetics, etc. The current retrobulbar injection equipment, due to its structural problems, can increase the risk of various adverse events during operation. Common retrobulbar injection complications include: retrobulbar hemorrhage, ocular perforation, subarachnoid or intradural injection, diplo...

AI Technical Summary

Problems solved by technology

[0005] 1. The needles provided by the current commonly used injection equipment cannot provide the operator with good feedback on the position of the needle tip in the eye, so there is a potential risk of intraocular damage and inconvenience in operation. In the traditional intravitreal injection operation, after the subject’s pupil is dilated, the length of the needle is observed through the transparent lens. If the lens density increases or becomes cloudy, the direction and length of the needle cannot be observed, such as the needle is too deep. It is easy to cause retinal puncture injury, too shallow needle insertion will also cause problems such as the failure of the drug to reach the lesion area or low concentration, and if the needle insertion direction deviates, there will also be problems such as stabbing other tissues in the eye or deviation of drug concentration dispersion ;When determining the position of the needle inlet, the traditional method uses ophthalmic compasses or rulers or even ultrasound for positioning, which requires an additional device and repeated disinfection before use, resulting in an increase in cost;

[0006] 2. At present, traditionally designed front-opening hollow needles (or special anesthesia block needles) are mostly used for retrobulbar and intraballoon injections. The needlepoints of existing syringes are mostly designed with head openings or parallel side openings, and are designed with long inclined surfaces. During the process, there will be sharp damage to the local tissue of the needle tract, such as cutting, and sometimes a more obvious scar will be formed. At the same time, in order to achieve a sufficient depth of administration, the tip of the needle tip with a long bevel design can often increase the risk of tissue damage near the target administration site;

[0007] 3. The surface material of the steel needle of the syringe in the prior art is a smooth metal surface. During the operation, the surface of the side wall of the needle often reflects the color of the local tissue, resulting in insufficient contrast between the needle and the local tissue, resulting in difficulty in positioning the needle, such as walking in half It is more difficult to locate the needle tip in transparent tissue;

[0008] 4. Most of the needlepoints of existing syringes and syringes are designed symmetrically, and the beginning of the needlepoint means that the direction of injection is sideways and forward, which is often not conducive to the realization of some fine operation functions. For example, when injecting medicine at multiple points perpendicular to the direction of the needle track, only Can take repeated needle-out and needle-in operations, but cannot rotate the needle to rotate the medicine-out direction, because the operation effect is poor for the existing design and the secondary damage caused by the cutting effect of the needle increases significantly;

[0009] 5. In traditional operations, such as injecting fluid into the subretina, conventional 1ml, 2ml, and 5ml syringes are usually used for operation. The existing design of the needle and the injection part of the syringe are mostly connected by a rigid structure, which may easily cause the needle tip to occur during the injection operation. Displacement, causing local tissue bleeding or even irreversible damage. In order to ensure that the fluid can be injected into the retina in sufficient amount, the needle must be kept still while pressing the syringe. If the operation is improper, it will easily cause unnecessary needle movement, which will cause damage to the retina and even the optic nerve. Irreversible damage; if the existing technology requires quantitative or semi-quantitative injection, it is necessary to move the field of vision away from the infusion to the side wall of the syringe, and then switch back after injection. It is impossible to observe the injection process in the infusion and the scale of the syringe at the same time. , Even for experienced operators, during the drug injection process, it is impossible to obtain quantitative or semi-quantitative local dosage and information on the remaining drug amount in the syringe according to the tactile feedback of the syringe;

[0010] 6. The surface of the hand-held part of the current syringe is so smooth that the operator is often unable to fine-tune the position of the needle tip due to insufficient friction of the hand-held part (especially this requirement is especially important when injecting inside the ball), which affects the fineness of the operation and increases risk of secondary injury;

[0011] 7. The current conventional syringe does not provide parts connected to the external support, that is, it cannot be connected to the external fixation support during the operation, and no additional fixation benefits can be obtained

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