CN211750422U

CN211750422U - Nasolacrimal duct sacculus expansion pipe

Info

Publication number: CN211750422U
Application number: CN201920290441.8U
Authority: CN
Inventors: 周叶; 钱永巍; 张炳昱
Original assignee: Suzhou Nanos Medical Devices Co ltd
Current assignee: Suzhou Nanos Medical Devices Co ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2020-10-27
Anticipated expiration: 2029-03-08

Abstract

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a nasolacrimal duct sacculus expansion pipe, including the sacculus that can withstand voltage, the one end horizontal welding of the sacculus that can withstand voltage has soft push rod, the inside of soft push rod is the setting of cavity form, the one end outside that the sacculus that can withstand voltage was kept away from to soft push rod bonds and has annotate the pressure handle, just soft push rod extends to annotate inside the pressure handle, annotate and press handle, soft push rod and can withstand voltage inside intercommunication each other between the sacculus inside soft push rod is inside to be equipped with puncture mechanism. The utility model discloses operation easy operation, the wound is little, and this product has very little diameter of passing through, can follow the light dacryocyst that gets into of lacrimal canaliculus and block up the region, and the sacculus that can withstand voltage simultaneously can pressurize expansion nasolacrimal duct pathological change position, compares in current artifical lacrimal duct implantation art, can carry out the expansion of bigger degree to nasolacrimal duct, guarantees the patency of nasolacrimal duct, avoids blocking once more.

Description

Nasolacrimal duct sacculus expansion pipe

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a nasolacrimal duct sacculus expansion pipe.

Background

Nasolacrimal duct obstruction is a common disease in ophthalmology, is often caused by inflammation or trauma, is often accompanied by uncomfortable symptoms such as lacrimation, purulence, pain and the like, and brings great inconvenience and pain to life and work of patients. The obstruction of the nasolacrimal duct can cause tears and bacteria to be retained in the lacrimal passage, causing serious complications such as suppurative infection, corneal ulcer, endophthalmitis, and the like. In addition, the neonatal dacryocystitis is a very common congenital eye disease of infants, and is also a common and frequently encountered disease of ophthalmology of infants. Conventional treatment modalities for nasolacrimal duct obstruction surgery are: lacrimal duct probing, artificial lacrimal duct implantation, lacrimal duct laser operation, dacryocystorhinostomy. The lacrimal duct probing has definite short-term curative effect but easy relapse. The lacrimal passage laser operation can cut and gasify abnormal tissues blocking the lacrimal passage in the lacrimal passage lumen, recover the tubular structure of the lacrimal passage and obtain better curative effect on the aspect of treating the lacrimal passage blockage, but because a new wound surface is formed after laser photocoagulation, fibroblasts under mucosa proliferate and scar tissues are formed, the lumen is blocked again, and the recurrence rate after pure laser operation is high. The artificial lacrimal duct implantation needs a secondary operation for taking out, the obstruction is caused by blood clots and secretion in the early stage, and the granulation tissue which is a fibrous connective tissue formation substance is proliferated due to the stimulation of the unabsorbable nasolacrimal duct stent in the lacrimal sac in the later stage, so the nasolacrimal duct stent is blocked from opening, and the artificial lacrimal duct implantation is difficult to take out. The nasal cavity dacryocyst anastomosis can effectively cure blocked nasolacrimal passages, but has higher operation difficulty and larger wound to patients, is not favorable for postoperative recovery, easily causes the injury of eyes and noses, destroys the original lacrimal passage structure, leaves scars on the faces and other defects, and is not easy to accept by more patients.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems that the injury of eyes and nose parts is easily caused and the original lacrimal passage structure is damaged in the prior art, and providing a nasolacrimal duct sacculus dilating catheter.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a nasolacrimal duct sacculus expansion pipe, is including the sacculus that can withstand voltage, the one end horizontal welding of the sacculus that can withstand voltage has soft push rod, the inside of soft push rod is the setting of cavity form, the one end outside that the sacculus that can withstand voltage was kept away from to soft push rod bonds and has annotate the pressure handle, just soft push rod extends to annotate inside the pressure handle, annotate and press handle, soft push rod and can withstand voltage inside intercommunication each other between the sacculus inside soft push rod is equipped with puncture mechanism.

Preferably, puncture mechanism includes that the cartridge is at the inside solid propelling movement inner core of soft propelling movement pole, leave the clearance between solid propelling movement inner core and the soft propelling movement pole inner wall, just the one end that can withstand voltage sacculus is kept away from to solid propelling movement inner core bonds on annotating the pressure handle inner wall, but solid propelling movement inner core other end runs through withstand voltage sacculus and extends to the outside, just can withstand voltage sacculus keep away from and weld between the one end of soft propelling movement pole and the solid propelling movement inner core.

Preferably, the solid pushing inner core is made of 304 or 316L stainless steel or nickel titanium material.

Preferably, both ends of the pressure-resistant balloon are arranged in a conical shape.

Preferably, the pressure-resistant balloon and the soft push rod are both made of nylon or other high polymer materials.

Preferably, the injection handle is made of PC material, and the whole length from the front end of the solid pushing inner core to the tail end of the injection handle is 10-15 cm.

Preferably, puncture mechanism includes that the cartridge is at the inside solid propelling movement inner core of soft propelling movement pole, leave the clearance between solid propelling movement inner core and the soft propelling movement pole inner wall, just the one end that can withstand voltage sacculus is kept away from to solid propelling movement inner core bonds on annotating pressing handle inner wall, the welding of solid propelling movement inner core other end is on the inner wall that can withstand voltage sacculus keeps away from annotating pressing handle one end, just solid propelling movement inner core is close to the tip level set up threaded hole of annotating pressing handle one end, screw hole and outside intercommunication, the inside threaded connection of screw hole has the screw thread post, the one end that the screw hole was kept away from to the screw thread post is connected.

Preferably, the outer diameter of the pressure-resistant balloon after being folded is not more than 0.80 mm.

Preferably, the conical needle and the threaded column are of an integrally formed structure, and the conical needle and the solid pushing inner core are made of the same material.

The utility model provides a pair of nasolacrimal duct sacculus expansion pipe, beneficial effect lies in: through setting up puncture mechanism to can reach the pathological change position directly, can improve the intensity of propelling movement. The utility model discloses, operation easy operation, the wound is little, and this product has very little diameter of passing through, can follow the light dacryocyst that gets into of lacrimal canaliculus and block up the region, and the sacculus that can withstand voltage simultaneously can pressurize expansion nasolacrimal duct pathological change position, compares in current artifical lacrimal duct implantation art, can carry out the expansion of bigger degree to nasolacrimal duct, guarantees the patency of nasolacrimal duct, avoids blocking once more.

Drawings

Fig. 1 is a schematic structural view of a nasolacrimal duct balloon dilatation catheter provided by the present invention;

fig. 2 is a schematic structural view of a second puncture mechanism of a nasolacrimal duct balloon dilatation catheter provided by the utility model;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure: the device comprises a solid pushing inner core 1, a pressure-resistant balloon 2, a soft pushing rod 3, an injection pressure handle 4, a conical needle 5, a threaded hole 6 and a threaded column 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1, a nasolacrimal duct balloon dilatation catheter comprises a pressure-resistant balloon 2, wherein two ends of the pressure-resistant balloon 2 are arranged in a conical shape, one end of the pressure-resistant balloon 2 is horizontally welded with a soft push rod 3, the pressure-resistant balloon 2 and the soft push rod 3 are both made of nylon or other high polymer materials, the soft push rod 3 is arranged in a hollow shape, an injection-pressure handle 4 is bonded on the outer side of one end of the soft push rod 3 away from the pressure-resistant balloon 2, the soft push rod 3 extends into the injection-pressure handle 4, the soft push rod 3 and the interior of the pressure-resistant balloon 2 are communicated with each other, a puncture mechanism is arranged in the soft push rod 3, the puncture mechanism comprises a solid push inner core 1 inserted in the soft push rod 3, the solid push inner core 1 is made of 304 or 316L stainless steel or nickel-titanium material, a gap is left between the solid push inner core 1 and the inner wall of the, and the end of the solid pushing inner core 1, which is far away from the pressure-resistant balloon 2, is bonded on the inner wall of the injection handle 4, the other end of the solid pushing inner core 1 penetrates through the pressure-resistant balloon 2 and extends to the outside, and the end of the pressure-resistant balloon 2, which is far away from the soft pushing rod 3, is welded with the solid pushing inner core 1.

Through solid propelling movement inner core 1, thereby can need not to use the pjncture needle earlier to get into the mediation, direct pathological change position, can improve the intensity of propelling movement, the efficiency of operation has been improved, can connect standard luer joint through annotating pressure handle 4, thereby be convenient for outside full filling ware to annotate pressure handle 4 inside and carry out the pressurization work, annotate simultaneously and press handle 4, soft push rod 3 and can withstand voltage sacculus 2 inside time phase interconnect on-state, thereby form a airtight return circuit, at the in-process of inflating, liquid can be through soft push rod 3 input can withstand voltage sacculus 2 inside, make can withstand voltage sacculus 2 to the specified pressure after, keep the certain time, can expand nasolacrimal duct, can withstand voltage sacculus 2 can be folded back to initial condition after the pressure release, withdraw this product from nasolacrimal duct, can withdraw from the lacrimal duct.

The injection handle 4 is made of PC material, and the whole length from the front end of the solid pushing inner core 1 to the tail end of the injection handle 4 is 10-15 cm; the length of 10-15cm is a size suitable for the doctor to perform the operation, so that the doctor can conveniently perform the operation.

The outer diameter of the pressure-resistant balloon 2 after being folded is less than or equal to 0.80 mm; can easily enter the pathological change part from the lacrimal canaliculus, reduces the operation difficulty of medical personnel, and simultaneously improves the comfort level of patients.

In the actual operation process, the solid pushing inner core 1 enters the lacrimal canaliculus along the lacrimal punctum and is inserted into the nasolacrimal duct until reaching the blockage part of the lacrimal sac lesion, the product is pushed forwards with little force, the solid pushing inner core 1 penetrates the lacrimal sac sclerosis lesion, the pressure-resistant sacculus 2 is positioned in the middle of the lesion, meanwhile, the external filling device is filled with liquid, the filling handle 4 is connected with the filling device through the luer connector, the filling device is used for pressurizing, the pressure-resistant sacculus 2 is kept to the specified pressure for a certain time, the nasolacrimal duct is expanded, the pressure-resistant sacculus 2 can be folded back to the initial state after pressure relief, the product is withdrawn from the nasolacrimal duct, and the product can be withdrawn from the lacrimal canaliculus.

Referring to fig. 2-3, as another preferred embodiment of the present invention, the only difference from the previous embodiment is that the puncturing mechanism includes a solid pushing core 1 inserted inside a soft pushing rod 3, a gap is left between the solid pushing core 1 and the inner wall of the soft pushing rod 3, one end of the solid pushing inner core 1 far away from the pressure-resistant balloon 2 is bonded on the inner wall of the injection handle 4, the other end of the solid pushing inner core 1 is welded on the inner wall of one end of the pressure-resistant balloon 2 far away from the injection handle 4, a threaded hole 6 is horizontally formed in the end part, close to one end of the injection-compression handle 4, of the solid pushing inner core 1, the threaded hole 6 is communicated with the outside, a threaded column 7 is connected to the inside of the threaded hole 6 in a threaded manner, a conical needle 5 is connected to one end, far away from the threaded hole 6, of the threaded column 7, the conical needle 5 and the threaded column 7 are of an integrally-formed structure, and the conical needle 5 and the solid pushing inner core 1 are made of the same material; through solid propelling movement inner core 1 to can support soft push rod 3 and sacculus 2 that can withstand voltage, the stability of effectual improvement medical personnel operation through setting up threaded column 7 and screw hole 6, thereby the convenience is changed conical needle 5 and is washd, through conical needle 5, thereby to puncture dacryocyst pathological change blocking position can.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a nasolacrimal duct sacculus expansion pipe, includes can withstand voltage sacculus (2), its characterized in that, the one end horizontal welding of the sacculus (2) that can withstand voltage has soft push rod (3), the inside of soft push rod (3) is the setting of cavity form, the one end outside that can withstand voltage sacculus (2) were kept away from in soft push rod (3) bonds and has notes pressure handle (4), just soft push rod (3) extend to annotate inside pressure handle (4), annotate and press handle (4), soft push rod (3) and can withstand voltage sacculus (2) inside between communicate each other soft push rod (3) inside is equipped with puncture mechanism.

2. The nasolacrimal duct balloon dilatation catheter according to claim 1, wherein the puncture mechanism comprises a solid pushing inner core (1) inserted inside the soft pushing rod (3), a gap is left between the solid pushing inner core (1) and the inner wall of the soft pushing rod (3), one end of the solid pushing inner core (1) far away from the pressure-resistant balloon (2) is bonded on the inner wall of the injection pressure handle (4), the other end of the solid pushing inner core (1) penetrates through the pressure-resistant balloon (2) to extend to the outside, and one end of the pressure-resistant balloon (2) far away from the soft pushing rod (3) is welded with the solid pushing inner core (1).

3. The nasolacrimal duct balloon dilation catheter according to claim 2, wherein the solid push inner core (1) is constructed of 304 or 316L stainless steel or nickel titanium material.

4. The nasolacrimal duct balloon dilatation catheter according to claim 1, wherein both ends of the pressure-resistant balloon (2) are conically arranged.

5. The nasolacrimal duct balloon dilatation catheter according to claim 1, wherein the pressure-resistant balloon (2) and the soft push rod (3) are made of nylon or other high polymer materials.

6. The nasolacrimal duct balloon dilatation catheter of claim 2, wherein the injection handle (4) is made of PC material, and the overall length from the front end of the solid push core (1) to the tail end of the injection handle (4) is 10-15 cm.

7. The nasolacrimal duct balloon dilatation catheter of claim 1, wherein the puncture mechanism comprises a solid push inner core (1) inserted inside a soft push rod (3), a gap is reserved between the solid pushing inner core (1) and the inner wall of the soft pushing rod (3), and one end of the solid pushing inner core (1) far away from the pressure-resistant sacculus (2) is adhered to the inner wall of the injection-compression handle (4), the other end of the solid pushing inner core (1) is welded on the inner wall of one end of the pressure-resistant sacculus (2) far away from the injection-pressure handle (4), and a threaded hole (6) is horizontally arranged at the end part of the solid pushing inner core (1) close to one end of the injection pressing handle (4), the threaded hole (6) is communicated with the outside, a threaded column (7) is connected with the internal thread of the threaded hole (6) in a threaded manner, one end of the threaded column (7) far away from the threaded hole (6) is connected with a conical needle (5).

8. The nasolacrimal duct balloon dilatation catheter according to claim 1, wherein an outer diameter of the collapsible balloon (2) after folding is 0.80mm or less.

9. The nasolacrimal duct balloon dilatation catheter according to claim 7, wherein the conical needle (5) is of an integral structure with the threaded post (7), and the conical needle (5) is made of the same material as the solid pushing core (1).