Ophthalmic perfusion head with light guide functionTechnical Field
The invention relates to the field of medical instruments, in particular to an ophthalmic perfusion head with a light guide function.
Background
In ophthalmic surgery, vitreoretinal surgery is a method of treating vitreous and retinal diseases under a surgical microscope by means of a vitrectomy cutter. With the continued improvement of surgical instruments and the accumulation of experience, surgical indications continue to expand, allowing the treatment of a number of eye diseases that were previously thought to be incurable. Three-way closed vitrectomy is commonly used in vitreoretinal surgery, where three scleral puncture ports in the eye wall are required to be respectively inserted into the irrigation head for continuously infusing fluid into the vitreous cavity to maintain intraocular pressure and avoid eye collapse, and optical fibers are used for intraocular illumination to allow intraocular operation to be performed in a clear visual field, and intraocular surgical instruments such as vitrectomy heads, intraocular scissors, intraocular forceps, membrane hooks, etc. are used to clear turbid vitreous and proliferation membranes in front of and behind the retina, and in order to achieve these functions, higher demands are placed on the ophthalmic irrigation head.
However, in the current operation, the structure and the function of the clinically used perfusion head are single, the illumination effect is poor, the operation effect is affected, and certain special requirements cannot be met, so that how to manufacture a novel perfusion head with personalized functions has important clinical significance.
In the past, the method for directly inserting the very thin optical fiber (small in light guiding quantity) into the perfusion tube has no three-fork structure, and the optical fiber directly occupies part of the inner diameter of the perfusion tube, so that the illumination effect is poor, and meanwhile, the perfusion flow is reduced, so that the method is not popularized and applied.
Disclosure of Invention
In order to solve the technical problems, an ophthalmic perfusion head with a light guide function is provided, the perfusion function and the light guide illumination function are integrated on the perfusion head, the overall diameter of the eye is reduced during surgical insertion, the surgical wound is small, a smaller cavity gap can be formed, the pain of a patient is reduced, and the eye perfusion head is light and convenient to use.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
an ophthalmic perfusion head with a light guide function comprises a transparent light guide outer sleeve, a liquid injection pipe, an outer reflecting layer and an expanded rear connecting end; the front end of the rear connecting end is connected with the rear end of the transparent light guide outer sleeve, and the rear end of the rear connecting end is connected with the light guide optical fiber group; the foremost end of the transparent light guide outer sleeve is pointed, and the rear end of the transparent light guide outer sleeve is connected with the rear connecting end; the side surfaces of the transparent light guide outer sleeve and the rear connecting end are obliquely connected with the front end of the liquid injection pipe, and the inside of the liquid injection pipe is communicated with the inside of the transparent light guide outer sleeve; the outer reflecting layer is laid on the outer surface layer of the side surface of the transparent light guide outer sleeve, and the front end and the rear end of the transparent light guide outer sleeve are reserved; when the perfusion head works, the rear connecting end irradiates illumination light from the light guide optical fiber group into the body along the transparent light guide outer sleeve and transparent liquid in the tube, and the outer reflecting layer isolates the outer wall of the tube of the transparent light guide outer sleeve from outside light so as to avoid the decrease and interference of illumination light intensity; when the light guide optical fiber group is contained in the optional control handle, the illumination range and the perfusion direction can be adjusted by the control handle.
Preferably, the transparent light guide outer sleeve is made of transparent acrylic, PVC and PMMA materials with certain strength and toughness, and can be properly bent under the action of external force, and simultaneously, the functions of light guide illumination and perfusion liquid conduction are met.
Preferably, the head of the light guide optical fiber group is further provided with a light guide optical fiber group plug, the longitudinal section of the light guide optical fiber group plug is T-shaped, the thin cylindrical part at the front end of the light guide optical fiber group plug is inserted into the rear end of the transparent light guide outer sleeve until the thin cylindrical part is not more than the joint of the rear connecting end and the liquid injection pipe, the outer circular ring part at the rear end part of the light guide optical fiber group plug is matched with the rear end of the transparent light guide outer sleeve, the tail interface at the rear end of the transparent light guide outer sleeve is connected with the tail of the light guide optical fiber group, and the head of the light guide optical fiber group is made of transparent materials with certain strength and then is connected with the light guide optical fiber bundle so as to facilitate manufacturing and strength increase.
Preferably, the included angle between the liquid injection pipe and the rear connecting end is designed to be smaller than 90 degrees.
Preferably, the outer reflecting layer is a silver plating layer.
Preferably, the tail end of the rear connecting end is further provided with a tail connecting end, and the tail connecting end is connected with the control handle through internal threads.
Preferably, when the light guide optical fiber set is contained in the optional control handle, the illumination range and the perfusion water flow direction can be adjusted by the control handle.
According to the technical scheme, the front end of the transparent light guide outer sleeve of the perfusion head is designed to be pointed, and the rear end of the transparent light guide outer sleeve is connected with the rear connecting end; the side surfaces of the transparent light guide outer sleeve and the rear connecting end are obliquely connected with the front end of the liquid injection pipe, and the inside of the liquid injection pipe is communicated with the inside of the transparent light guide outer sleeve; the outer reflecting layer is laid on the outer surface layer of the side surface of the transparent light guide outer sleeve, and the front end and the rear end of the transparent light guide outer sleeve are reserved; when the perfusion head works, the rear connecting end irradiates illumination light from the light guide optical fiber group into the body along the transparent light guide outer sleeve and transparent liquid in the tube, and the outer reflecting layer isolates the outer wall of the tube of the transparent light guide outer sleeve from outside light so as to avoid the decrease of illumination light intensity and the interference of imaging; when the light guide optical fiber group is contained in the optional control handle, the illumination range and the perfusion direction can be adjusted by the control handle. The infusion function and the light guide illumination function are integrated on the infusion head, the overall diameter during operation insertion is reduced, the operation wound is small, smaller cavities can be formed, pain of a patient is reduced, the infusion head is light and convenient to use, compared with the original infusion head, the infusion head is added with the function, the illumination effect is excellent, the overall volume is reduced, the infusion head is convenient to enter the smaller cavities, the wound of the patient can be reduced, the pain is relieved, the doctor is convenient to operate, and therefore the purposes of novel design, reasonable structure and good application effect are achieved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of an ophthalmic irrigation head with light guiding function according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view showing an ophthalmic perfusion head with light guiding function according to an embodiment of the present invention in use when a contact pin is inserted;
fig. 3 is a sectional view showing a practical state of an ophthalmic perfusion head with a light guiding function when a light guiding optical fiber set plug and an external infusion tube are connected according to an embodiment of the present invention.
Corresponding part names are indicated by numerals and letters in the drawings:
1. the transparent light guide outer sleeve 2, the liquid injection pipe 3, the outer reflecting layer 4, the rear connecting end 5, the light guide optical fiber set 6, the tail connecting end 7, the light guide optical fiber set plug 8, the control handle 9, the contact pin 10 and the external infusion pipe
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The present invention will be described in further detail with reference to examples and embodiments.
Examples
As shown in fig. 1-3, an ophthalmic perfusion head with a light guide function comprises a transparent light guide outer sleeve 1, a liquid injection tube 2, an outer reflecting layer 3 and an expanded rear connecting end 4; the front end of the rear connecting end 4 is connected with the rear end of the transparent light guide outer sleeve 1, and the rear end of the rear connecting end is connected with the light guide optical fiber group 5; the foremost end of the transparent light guide outer sleeve 1 is pointed, and the rear end of the transparent light guide outer sleeve is connected with the rear connecting end; the side surfaces of the transparent light guide outer sleeve 1 and the rear connecting end 4 are obliquely connected with the front end of the liquid injection pipe 2, and the inside of the liquid injection pipe 2 is communicated with the inside of the transparent light guide outer sleeve 1; the outer reflecting layer 3 is laid on the outer surface layer of the side surface of the transparent light guide outer sleeve 1, and the front end and the rear end of the transparent light guide outer sleeve 1 are reserved; when the perfusion head works, the rear connecting end 4 irradiates illumination light from the light guide optical fiber group 5 into the body along the transparent light guide outer sleeve 1 and the transparent liquid in the tube, and the outer reflecting layer 3 isolates the outer wall of the tube of the transparent light guide outer sleeve 1 from outside light so as to avoid the decrease and interference of illumination light intensity; when the light guide optical fiber set 5 is contained in the optional control handle 6, the illumination range and the pouring direction can be adjusted by the control handle.
In order to further optimize the technical scheme, the transparent light guide outer sleeve 1 is made of transparent acrylic, PVC and PMMA materials with certain strength and toughness, and can be bent properly under the action of external force during operation, and simultaneously, the dual functions of light guide illumination and perfusion liquid conduction are met.
Meanwhile, in order to facilitate the insertion of the front end of the transparent light guide outer sleeve 1 and the connection of the liquid injection pipe 2 with the outside, the included angle between the liquid injection pipe 2 and the rear connecting end 4 is designed to be smaller than 90 degrees.
In order to better improve the light reflecting effect, the outer light reflecting layer 3 is a silver plating layer. The head of the light guide optical fiber group is also provided with a light guide optical fiber group plug, the longitudinal section of the light guide optical fiber group plug 7 is T-shaped, the thin cylindrical part at the front end of the light guide optical fiber group plug is inserted into the rear end of the transparent light guide outer sleeve 1 until the rear end of the light guide optical fiber group plug is not more than the joint of the rear connecting end 4 and the liquid injection pipe 2, the outer annular part of the rear end part of the light guide optical fiber group plug 7 is matched with the rear end of the transparent light guide outer sleeve 1, the tail interface of the rear end of the transparent light guide outer sleeve 1 is connected with the tail of the light guide optical fiber group 5, and the head of the light guide optical fiber group 5 is made of transparent materials with certain strength and then is connected with the light guide optical fiber bundle so as to facilitate manufacturing and increase strength. The tail end of the rear connecting end 4 is also provided with a tail connecting end 6, and the tail connecting end 6 is connected with a control handle 8 through an internal thread 7. When the light guide optical fiber set 5 is contained in the optional control handle 8, the illumination range and the perfusion water flow direction can be adjusted by the control handle 8.
In this example, in practical use, the front end of the transparent light-guiding outer sleeve 1 of the perfusion head is designed to be pointed, and the rear end thereof is connected with the rear connecting end 4, as shown in fig. 2, so that during operation, a doctor inserts the contact pin 9 into the central core of the transparent light-guiding outer sleeve 1, the tip of the contact pin is exposed from the front end of the transparent light-guiding outer sleeve 1, the contact pin 9 is pulled out and the transparent light-guiding outer sleeve 1 is left in the eye. As shown in fig. 3, a light-guiding optical fiber group plug 7 is inserted into the rear end of the transparent light-guiding outer sleeve 1, and a control handle 8 is screwed onto the tail of the transparent light-guiding outer sleeve 1, wherein the light-guiding optical fiber group 5 is arranged in the control handle 8, and the light-guiding optical fiber group plug 7 is made of transparent materials, so that the illumination in eyes can be realized, and meanwhile, the infusion function and the light-guiding illumination function are integrated on the infusion head by connecting the outer end pipe orifice of the infusion pipe 2 with the external infusion pipe 10, so that the overall diameter during operation insertion is reduced, the operation wound is small, smaller cavity gaps can be formed, the pain of a patient is reduced, the operation is light, compared with the original infusion head, the function is increased, the illumination effect is excellent, the overall volume is reduced, the operation is convenient, the wound of the patient is reduced, the pain is relieved, and the doctor operation is convenient, thereby achieving the purposes of novel design, reasonable structure and good application effect.
The above description is merely of a preferred embodiment of the ophthalmic perfusion head with light guiding function according to the present invention, and it should be noted that it is possible for a person skilled in the art to make several variations and modifications without departing from the inventive concept of the present invention.