Instrument applied to lacrimal passage probing

Abstract

The utility model discloses an instrument applied to lacrimal passage probing, relates to the technical field of medical auxiliary appliances, and solves the problems that the diameter of an existing lacrimal passage probe is fixed, when the lacrimal passage dredging radius of a patient needs to be changed after the lacrimal passage probe is inserted, the lacrimal passage probe needs to be pulled out and inserted again, the operation efficiency is low, the operation time is increased due to multiple probing operations, and the operation difficulty is high. Psychological stress is caused to the patient; and repeated expansion easily causes lacrimal passage mucosa injury and aggravates postoperative inflammatory response. The utility model provides an instrument applied to lacrimal passage probing, which comprises an outer tube and an inner core, the outer tube is sleeved on the inner core, the inner core comprises a guide wire and a dilation cone which are integrally connected, and the outer tube is in threaded connection with the dilation cone; the guide wire is sleeved with an air bag, the air bag is arranged between the guide wire and the outer tube, and one end of the air bag is connected with the dilation cone. The outer diameter of the lacrimal passage can be expanded in the probing process, so that the lacrimal passage is expanded; and meanwhile, certain stability is achieved, and displacement cannot occur in the operation process.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical auxiliary appliance technical field, concretely relates to a kind of instruments applied to tear duct sounding. BACKGROUND

[0002] Tear duct obstruction is a common and frequently-occurring disease in ophthalmology, which is a disease that occurs in the junction of lacrimal point, lacrimal canaliculus, lacrimal sac and nasolacrimal duct, and the lower opening of nasolacrimal duct, with overflow as the main symptom. If not treated completely, there is a risk of latent intraocular and external infection. The treatment principle is to control lacrimal sac inflammation and restore or establish the drainage channel from lacrimal sac to nasal cavity.

[0003] The specific operation method is to pass through the blocked part of the tear duct directly with a tear duct probe under local anesthesia, thereby unblocking the tear duct. However, after inserting the probe through the narrow lacrimal point, how to expand the gradually increasing tear duct behind it has always been the biggest difficulty that seriously affects the surgical effect of tear duct sounding. The existing tear duct probe has a fixed diameter, and different diameter tear duct probes need to be prepared during actual surgery. When it is found that the tear duct needs to be changed after the tear duct probe is inserted, the tear duct probe needs to be pulled out and reinserted, which is low in surgical efficiency, and the repeated sounding operation on one hand increases the operation time and causes psychological pressure to the patient; on the other hand, repeated expansion can easily cause damage to the tear duct mucosa and aggravate postoperative inflammation.

[0004] After searching, the patent with publication number CN217040492U proposes a sounding needle, which includes an outer tube and an inner core. The outer tube includes a straight section and a tapered section integrally arranged with the straight section. The inner core includes a guide wire arranged through the outer tube. The guide wire extends out of the front end of the outer tube and is provided with a guide cone. The rear end of the guide wire is provided with an operating handle. An expansion sac is sleeved at the connection between the guide wire and the guide cone. The guide cone has the same taper as the tapered section, and the large end of the guide cone has the same diameter as the small end of the tapered section. The utility model has the same taper of the guide cone and the tapered section, which can have a certain expansion effect on the tear duct during sounding, facilitating passage, and at the same time, when a narrow part is found, the outer tube can be retracted, the expansion sac can be ejected, the tear duct wall can be squeezed, and high-strength expansion can be formed on the tear duct, thereby achieving the purpose of unblocking the tear duct.

[0005] Although the above-mentioned device can expand during sounding to avoid multiple operations, the outer tube and the inner core are sleeved without fixed structure, which has the risk of separation during movement in the tear duct, and the tail structure located outside needs to be gripped. In addition, the expansion diameter caused by the ejection of the expansion sac is uniform, and the diameter of the sounding needle cannot be gradually expanded according to actual needs. SUMMARY

[0006] The utility model aims at providing a kind of instrument applied to tear duct sounding, can enlarge its outer diameter in sounding process, realize the expansion of tear duct;It has certain stability simultaneously, and will not shift in the operation process.

[0007] The main idea of the technical scheme adopted by the utility model is: by designing the outer tube and the inner core connected by threads, the two can be tightly connected without expansion, which is convenient for operation;A gasbag is arranged on the inner core, and the gasbag is located between the outer tube and the inner core;When expansion is needed, the outer tube and the inner core are separated, the outer tube retreats to expose the gasbag at the front end, and the gasbag inflates to make the outer diameter larger than that of the outer tube, realizing the expansion of the tear duct;A plurality of limiting grooves are evenly arranged on the inner wall of the outer tube, and when the gasbag inflates, part of the gasbag enters the limiting groove to limit the position of the outer tube, avoiding displacement of the outer tube during the inflation process of the gasbag.

[0008] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0009] A kind of instrument applied to tear duct sounding, comprising an outer tube and an inner core, the outer tube is sleeved on the inner core, the inner core includes a guide wire and an expansion cone connected integrally, and the outer tube is connected with the expansion cone by threads;A gasbag is sleeved on the guide wire, and the gasbag is arranged between the guide wire and the outer tube, and one end of the gasbag is connected with the expansion cone.

[0010] Through the above technical scheme, further: a limiting groove is formed on the inner wall of the outer tube.

[0011] Through the above technical scheme, further: the tail of the guide wire is connected with an operating sheet.

[0012] Through the above technical scheme, further: a syringe is connected with the operating sheet by threads.

[0013] Through the above technical scheme, further: the other end of the gasbag is connected with the tail of the guide wire.

[0014] Through the above technical scheme, further: the gasbag is communicated with the syringe through a connecting pipe.

[0015] The utility model has the beneficial effects that:

[0016] 1. By designing the outer tube and the inner core connected by threads, the two can be tightly connected without expansion, which is convenient for operation;

[0017] 2. A gasbag is arranged on the inner core, and the gasbag is located between the outer tube and the inner core;When expansion is needed, the outer tube and the inner core are separated, the outer tube retreats to expose the gasbag at the front end, and the gasbag inflates to make the outer diameter larger than that of the outer tube, realizing the expansion of the tear duct;

[0018] 3. A plurality of limiting grooves are evenly arranged on the inner wall of the outer tube, when the air bag is inflated, part of the air bag enters the limiting groove, and the position of the outer tube is limited, avoiding displacement of the outer tube during the inflation process of the air bag. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is a three-dimensional structure schematic diagram of the utility model inner core and air bag, operating piece;

[0021] Figure 3 It is a side view schematic diagram of the utility model;

[0022] Figure 4 It is Figure 3 It is a cross-sectional view along A-A;

[0023] Figure 5 It is Figure 4 It is a partial structure enlarged schematic diagram;

[0024] Wherein: 1, outer tube; 2, inner core; 201, guide wire; 202, expansion cone; 3, air bag; 4, operating piece; 5, syringe; 6, limiting groove; 7, connecting pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] The inventor found that the existing lacrimal passage probe has a fixed diameter, and in the actual operation process, lacrimal passage probes with different diameters need to be prepared. When it is found that the radius of the lacrimal passage of the patient needs to be changed after the lacrimal passage probe is inserted, the lacrimal passage probe needs to be pulled out and re-inserted, which is low in operation efficiency, and the repeated exploration operation on the one hand increases the operation time and causes psychological pressure to the patient; on the other hand, repeated expansion can easily cause damage to the lacrimal passage mucosa and aggravate postoperative inflammatory reaction.

[0027] Based on the above findings, the application proposes an instrument applied to lacrimal passage probing, by designing the threaded connection of outer tube 1 and inner core 2, so that they can be tightly connected without the need for expansion, facilitating operation; the inner core 2 is provided with an air bag 3, which is located between the outer tube 1 and the inner core 2, when expansion is needed, the outer tube 1 and the inner core 2 are separated, the outer tube 1 retreats to expose the air bag 3 at the front end, the air bag 3 inflates to make the outer diameter greater than that of the outer tube 1, realizing the expansion of the lacrimal passage; a plurality of limiting grooves 6 are uniformly arranged on the inner wall of the outer tube 1, when the air bag 3 inflates and expands, part of the air bag 3 enters the limiting groove 6 to limit the position of the outer tube 1, avoiding displacement of the outer tube 1 during the inflation process of the air bag 3. Embodiment one

[0028] Reference Figure 1 - Figure 5 The application discloses an instrument applied to lacrimal passage probing, which comprises an outer tube 1, the outer tube 1 is of a tubular structure, has a cavity inside, and is provided with external threads at the front end. An inner core 2 is slidably connected in the cavity of the outer tube 1, the inner core 2 comprises a guide wire 201 and an expansion cone 202 which are integrally connected, the expansion cone 202 is of a conical structure, and the guide wire 201 and the expansion cone 202 are coaxially arranged. A groove is formed in the end of the expansion cone 202 connected with the guide wire 201, internal threads are arranged on the inner wall of the groove, and the expansion cone 202 is threadedly connected with the outer tube 1.

[0029] An air bag 3 is arranged outside the guide wire 201, the air bag 3 is sleeved on the guide wire 201, one end of the air bag 3 is connected with the expansion cone 202, and the other end is fixedly connected with the tail portion of the guide wire 201. The air bag 3 is made of elastic materials such as rubber and latex, and can be deformed when gas is injected.

[0030] The tail portion of the guide wire 201 is fixedly connected with an operating piece 4, the outer tube 1 and the inner core 2 are slidably connected by pushing and pulling the operating piece 4. The operating piece 4 is provided with a connecting groove, a connecting pipe 7 is arranged in the guide wire 201, one end of the connecting pipe 7 is in communication with the air bag 3, and the other end is in communication with the connecting groove.

[0031] Internal threads are arranged on the inner wall of the connecting groove, the nipple portion of a syringe 5 is of a threaded structure, and the connecting groove is threadedly connected with the syringe 5. The gas in the air bag 3 can be inflated and exhausted by pushing and pulling the syringe 5, facilitating the expansion of the lacrimal passage. The syringe 5 is of a transparent structure, and the capacity marks are engraved on the outer wall, facilitating the observation of the gas capacity injected into the air bag 3.

[0032] In use, the taper structure of the expansion cone 202 is used to extrude and expand the lacrimal passage wall, when a narrow part is found, if it cannot be passed through, the operation piece 4 is rotated to separate the outer tube 1 from the inner core 2, and the outer tube 1 is moved backward to expose the air bag 3, the air bag 3 is inflated by pushing the syringe 5, and the inflation process is slow to avoid the air bag 3 expanding too fast and too large to cause damage to the lacrimal passage wall.

[0033] The air bag 3 extrudes the lacrimal passage wall, which can expand the lacrimal passage, thereby dredging the lacrimal passage, so that the inner core 2 and the outer tube 1 can pass through smoothly, after the expansion is completed, the syringe 5 is rotated to separate it from the operation piece 4, and the gas in the air bag 3 is discharged. Embodiment two

[0034] In order to improve the stability of the outer tube 1 during the expansion of the air bag 3, a plurality of limiting grooves 6 are arranged on the inner wall of the outer tube 1, when the air bag 3 is inflated, part of the air bag 3 enters the limiting groove 6 to limit the position of the outer tube 1, avoiding displacement of the outer tube 1 during the inflation of the air bag 3.

[0035] And the device is a reusable structure, each component can be disassembled, and can meet the sterile requirements by cleaning, disinfecting and sterilizing.

[0036] The use process of the utility model is:

[0037] In use, the taper structure of the expansion cone 202 is used to extrude and expand the lacrimal passage wall, when a narrow part is found, if it cannot be passed through, the operation piece 4 is rotated to separate the outer tube 1 from the inner core 2, and the outer tube 1 is moved backward to expose the air bag 3, the air bag 3 is inflated by pushing the syringe 5, and the inflation process is slow to avoid the air bag 3 expanding too fast and too large to cause damage to the lacrimal passage wall.

[0038] When the air bag 3 is inflated, part of the air bag 3 enters the limiting groove 6 to limit the position of the outer tube 1, avoiding displacement of the outer tube 1 during the inflation of the air bag 3.

[0039] The inflation is divided into multiple stages, each stage corresponds to a different gas capacity, after completing the inflation of a stage, the operation piece 4 is tried to be moved to determine whether the dredging is completed, if not, the next stage of inflation is continued.

[0040] The tear duct is dilated by extruding the tear duct wall by the air bag 3, so as to dredge the tear duct, and the inner core 2 and the outer tube 1 can pass through smoothly; after the dilation is completed, the syringe 5 is separated from the operating piece 4, the gas in the air bag 3 is discharged, then the outer tube 1 is pushed forward until the outer tube 1 contacts with the dilation cone 202, the operating piece 4 is rotated, the inner core 2 is screwed with the outer tube 1, and then the whole is pushed forward to explore, the dilation is repeated, and finally the exploration is completed.

[0041] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by the skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. An instrument for use in punctum lacrimalis probing, characterized in that, The utility model relates to a kind of balloon catheter, including outer tube (1) and inner core (2), the outer tube (1) is sleeved on inner core (2), the inner core (2) includes integrally connected guide wire (201) and expansion cone (202), the outer tube (1) is threadedly connected with expansion cone (202);Balloon (3) is sleeved on the guide wire (201), the balloon (3) is arranged between guide wire (201) and outer tube (1), one end of the balloon (3) is connected with expansion cone (202).

2. An instrument for puncturing lacrimal passages according to claim 1, characterized in that: Limiting slot (6) is opened on the inner wall of the outer tube (1).

3. An instrument for puncturing lacrimal passages according to claim 2, characterized in that: The tail of the guide wire (201) is connected with operating sheet (4).

4. An instrument for puncturing lacrimal passages according to claim 3, characterized in that: Syringe (5) is threadedly connected on the operating sheet (4).

5. An instrument for puncturing lacrimal passages according to claim 4, characterized in that: The other end of the balloon (3) is connected with the tail of the guide wire (201).

6. An instrument for puncturing lacrimal passages according to claim 5, characterized in that: The balloon (3) is communicated with syringe (5) by connecting pipe (7).

Images