CN114081720A

CN114081720A - Ear surgical device

Info

Publication number: CN114081720A
Application number: CN202010783724.3A
Authority: CN
Inventors: 宋保组; 逄永刚; 张晓芳; 曹金象; 冯福玲
Original assignee: Hefei Haoqi Medical Technology Co ltd
Current assignee: Hefei Haoqi Medical Technology Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2022-02-25
Anticipated expiration: 2040-08-06
Also published as: CN114081720B

Abstract

The invention provides an ear surgery device, which comprises a holding part, an insertion part and a ventilation device, wherein the holding part and the insertion part are sequentially arranged, and the ventilation device is movably arranged on the insertion part. In the insertion part, at least one part of the suction tube and at least one part of the pushing tube are contained in the outer sleeve, the pushing tube and the tubular main body are sequentially sleeved on different parts of the outer side wall of the suction tube along the extending direction of the outer sleeve, the suction tube is communicated with the inside of the tubular main body to form a suction channel, and after the cutting piece acts on target tissues, and the ventilating device is placed in front of an incision, the tympanometry liquid which flows out can be discharged through the suction tube through the suction channel, so that the tympanometry liquid which flows out is prevented from blocking the ventilating device, and the ventilating device has good use safety.

Description

Ear surgical device

Technical Field

The invention relates to the technical field of medical instruments, in particular to an ear surgery device.

Background

Many otic disorders, such as eustachian tube occlusion, catarrhal otitis media, secretory otitis media, barotropic otitis media and aerotitis can cause tympanoptic fluid that needs to be drained in a timely manner and treated specifically.

Chinese patent publication No. CN203898546U discloses a tympanostomy suction knife, which needs to withdraw the ear after cutting the tympanostomy, and then uses a tube placing tool to place a vent tube at the tympanostomy to communicate the inside and outside of the tympanostomy, thereby achieving the purpose of liquid removal and ventilation. However, the sequential use of the myringotomy suction knife and the tube placement tool prolongs the operation time and increases the pain of the patient.

Chinese patent publication No. CN206809388U discloses a tympanostomy tube holder, which can directly place an airway at the tympanostomy site without replacing the tube holding tool after forming an incision on the tympanostomy membrane. However, if the tympanostomy tube placing device forms an incision and the effusion in the tympanostomy tube is discharged at the same time, the vent tube is easy to be blocked, the subsequent discharging effect of the effusion in the tympanostomy tube is influenced, and the use safety is low.

Accordingly, there is a need for a new ear surgery device that avoids the above-mentioned problems of the prior art.

Disclosure of Invention

The invention aims to provide an ear surgery device, which can place a breather pipe without replacing a pipe placing tool after tympanostomy, can discharge effusion of a tympanic cavity which flows out in time while forming an incision so as to avoid blockage of the breather pipe and has good use safety.

In order to achieve the purpose, the ear surgery device comprises a holding part and an inserting part which are sequentially arranged, and an air breather which is movably arranged on the inserting part, wherein the holding part comprises an adjusting piece, the inserting part comprises an outer sleeve, a suction tube and a push tube, the air breather comprises a tubular main body, and the suction tube and the outer sleeve are coaxially arranged; the proximal end of the outer sleeve is provided with a cutting piece to act on target tissue and form an incision, and the proximal end is defined as one end close to the target tissue; at least one part of the suction tube and at least one part of the pushing tube are accommodated in the outer sleeve, the pushing tube and the tubular main body are sequentially sleeved on different parts of the outer side wall of the suction tube along the extension direction of the outer sleeve, and the suction tube is communicated with the inside of the tubular main body to form a suction channel; the adjusting piece is connected with the pushing pipe to drive the pushing pipe to move along the extending direction of the inserting portion and act on the tubular main body, so that the ventilating device is placed in the incision.

The ear surgery device of the invention has the beneficial effects that: in the insertion part, at least one part of the suction tube and at least one part of the push tube are contained in the outer sleeve, the push tube and the tubular main body are sequentially sleeved on different parts of the outer side wall of the suction tube along the extension direction of the outer sleeve, the suction tube is communicated with the inside of the tubular main body to form a suction channel, and after the cutting piece acts on target tissues, and the ventilating device is arranged in front of an incision, the effusion of the tympanic cavity which flows out can be discharged through the suction tube through the suction channel, so that the effusion of the tympanic cavity which flows out is prevented from blocking the ventilating device, and the ventilating device has good use safety.

Preferably, the proximal end of the suction tube is accommodated in the tubular main body, and the axial length of the proximal end of the suction tube from the proximal end of the outer sleeve is fixed and is not more than 7 mm. The beneficial effects are that: ensure that the suction tube has good suction effect and can not damage eardrum.

Preferably, at least part of the outer wall of the tubular body is attached to the inner wall of the outer sleeve, and part of the inner wall of the tubular body is attached to the outer wall of the suction tube, so that the tubular body is elastically deformed, and the suction channel has good sealing performance.

Further preferably, the surface roughness of the inner wall of the outer sleeve is not more than 0.4, the surface roughness of the outer wall of the suction pipe is not more than 0.2, and the surface roughness of the inner wall surface and the surface roughness of the outer wall of the push pipe are not more than 0.2. The beneficial effects are that: the pushing tube can smoothly act on the tubular body to place the vent device at the incision.

It is further preferred that part of the outer side wall and part of the inner side wall of the outer sleeve from the proximal end is coated with a lubricating layer to further reduce the surface roughness, the lubricating layer having an axial length in the extension direction of the outer sleeve of 25-35 mm.

Further preferably, the suction tube is made of one of polyamide, polypropylene and polyethylene, the outer sleeve is made of metal, and the tubular main body is made of an elastic material.

Preferably, the ventilation device further comprises a limiting part, the limiting part is arranged on the outer side wall of the tubular main body, the ventilation device is placed behind the incision, the limiting part is located on the outer side of the target tissue, the outer surface of the tubular main body comprises a medicine carrying region, and the medicine carrying region is located between the limiting part and the proximal end of the tubular main body. The beneficial effects are that: is beneficial to playing the role of bacteriostasis and anti-inflammation to the incision and the environment at the inner side of the target tissue through the medicine.

Further preferably, the medicine carrying area comprises a plurality of groove structures, and the concave surfaces of the groove structures are loaded with the medicine coating to avoid the falling off of the medicine coating due to the contact with the inner wall of the outer sleeve.

Further preferably, the drug coating is a drug controlled release coating to quantitatively release the drug.

Further preferably, the proximal end of the tubular main body is provided with a bevel connection structure, the bevel connection structure is inclined to the axis of the tubular main body, the outer diameter of the bevel connection structure is larger than the outer diameter of the tubular main body, and the drug carrying region is also located on at least part of the front end face and at least part of the side face of the bevel connection structure.

Preferably, the tubular main body and the bevel connection structure are made of an elastic degradable material, and the bevel connection structure is accommodated in the outer sleeve before the pushing pipe acts on the tubular main body.

Further preferably, the near-end of tubulose main part is provided with the arc structure, the arc structure perpendicular to tubulose main part, the arc structure includes arc concave surface and arc convex surface, the medicine carrying area still is located at least partly of arc concave surface, the arc concave surface with the arc convex surface is relative, and does the near-end of arc structure.

Preferably, the tubular main body and the arc-shaped structure are made of elastic non-degradable materials, the pushing pipe is accommodated in the outer sleeve before acting on the tubular main body, and a part of the arc-shaped convex surface is attached to the inner wall of the outer sleeve.

Preferably, the outer side wall of the outer sleeve close to the proximal end is provided with a developing structure, and the developing structure comprises a luminous scale mark line so as to assist in determining the cutting depth and assisting in confirming the depth of the effusion while attracting the effusion.

Drawings

FIG. 1 is a schematic view of the construction of the ear surgical device of the present invention;

FIG. 2 is a schematic structural view of the outer sleeve shown in FIG. 1;

FIG. 3 is a schematic structural view of a push tube of the present invention;

FIG. 4 is a schematic view of the structure of the suction tube of the present invention;

FIG. 5 is a schematic view of the internal structure of the ear surgical device shown in FIG. 1;

fig. 6 is an internal structural view of a portion a1 of fig. 1;

FIG. 7 is a schematic view of the assembled structure of the outer cannula and the vent shown in FIG. 6;

FIG. 8 is a schematic view of an embodiment of an aerator apparatus of the present invention;

FIG. 9 is a schematic view of the vent apparatus shown in FIG. 8 taken along direction B;

FIG. 10 is a schematic structural view of another alternative venting device of the present invention;

figure 11 is a schematic view of the vent shown in figure 10 after being flipped 180 degrees around the arcuate configuration.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

In view of the problems of the prior art, an embodiment of the present invention provides an ear surgery device, which includes a holding portion, an insertion portion, and a ventilation device movably disposed on the insertion portion. The insertion portion includes an outer cannula, a suction tube, and a push tube.

In an embodiment of the present invention, the proximal ends of the components are defined as the ends of the ear surgical device closest to the target tissue during application to the ear surgery.

The surface roughness of the embodiment of the invention is expressed by the profile arithmetic mean deviation Ra, and the Ra is specifically: and within the sampling length L, averaging the absolute values of the distances from each point on the measured actual contour to the contour centerline.

FIG. 1 is a schematic structural view of an ear surgical device according to some embodiments of the present invention.

Referring to fig. 1, the ear surgery device 1 includes a holding portion 11 and an outer sleeve 12 sequentially arranged, the holding portion 11 includes an adjusting member 111, and a distal end of the holding portion 11 is connected with a suction port 13 to connect with a suction device and discharge effusion.

In some embodiments of the present invention, the adjusting element 111 is a push rod, and the push rod can move along the extending direction of the holding portion 11 relative to the holding portion 11 to drive the pushing tube accommodated in the outer sleeve 12 to move.

Fig. 2 is a schematic structural view of the outer sleeve shown in fig. 1. FIG. 3 is a schematic diagram of a push tube according to some embodiments of the invention. Fig. 4 is a schematic structural view of a suction tube according to some embodiments of the present invention.

Referring to fig. 1 to 4, the outer sleeve 12 has a hollow structure. At least a part of the pushing tube 31 and at least a part of the suction tube 41 are housed in the outer tube 12.

In some embodiments of the present invention, portions of the outer sidewall and portions of the inner sidewall of the outer sleeve 12 from the proximal end are coated with a lubricious layer to further reduce surface roughness.

Specifically, the axial length of the lubrication layer (not shown) from the proximal end of the outer sleeve 12 along the extending direction of the outer sleeve 12, i.e., the direction a2 shown in fig. 2, is 25-35 mm.

The lubricious layer on a portion of the outer sidewall of the outer cannula 12 is in direct contact with the target tissue while the otic surgical device 1 is making the incision and placing the vent in the incision, which reduces the pain to the patient from the process of piercing the tympanic membrane.

The lubricating layer on the partial inner side wall of the outer sleeve 12 can effectively reduce the surface roughness between the outer sleeve and the air vent device, so that the air vent device can be more easily placed in the incision.

FIG. 5 is a schematic view of the internal structure of the ear surgical device shown in FIG. 1.

Referring to fig. 5, the grip 11 includes a guide 51 and a fixing member 52. The adjusting member 111 is disposed between the guide member 51 and the fixing member 52. The distal end of the outer sleeve 12 is fixedly connected to the proximal opening of the grip portion 11 to communicate with the interior of the grip portion 11.

Referring to fig. 4 and 5, a portion of the suction tube 41 is accommodated in the outer tube 12, and the other portion is accommodated in the grip portion 11 and fixedly connected to the fixing member 52.

Specifically, the suction tube 41 includes a suction front section 411 and a suction rear section 412 which are connected in sequence, a part of the suction front section 411 is accommodated in the outer sleeve 12 and is fixedly connected to the fixing member 52, the suction rear section 412 is accommodated in the holding portion 11, and the distal end is connected to the suction port 13 and is communicated with the inside of the suction port 13, so that the effusion in the tympanic cavity is discharged out of the ear surgery device 1 through the suction front section 411 and the suction rear section 412 in sequence via the proximal end of the suction front section 411.

In some embodiments of the present invention, the front suction section 411 and the rear suction section 412 are made of the same material.

Referring to fig. 5, a portion of the pushing tube 31 is accommodated in the outer sleeve 12, and another portion thereof is accommodated in the holding portion 11 and movably connected to the guide 51.

Specifically, the distal end of the pushing tube 31 penetrates the distal end of the outer sleeve 12 to enter the interior of the holding portion 11, and the guide 51 is movably connected to the pushing tube 31. The adjusting piece 111 is fixedly connected with the pushing tube 31, the fixing piece 52 is fixedly connected with the suction tube 41, when the pushing tube 31 is driven to move synchronously in the process that the adjusting piece 111 moves along the extending direction of the holding part 11, the guide piece 51 can limit the moving direction of the pushing tube 31, so that the ventilating device can be pushed to move away from the outer sleeve 12 along the extending direction of the outer sleeve 12 smoothly.

In some embodiments of the present invention, one end of the guiding element 51 is sleeved on the pushing tube 31 and is in clearance fit with the pushing tube 31, and the other end is fixedly connected to the inner wall of the holding portion 11.

In some embodiments of the invention, the proximal end of the outer sleeve 12 is provided with a cutting element.

In some embodiments of the invention, the aspiration tube 41 is disposed coaxially with the outer cannula 12.

Fig. 6 is an internal structure diagram of a portion a1 of fig. 1.

Referring to fig. 6, a vent 62 is movably disposed within outer cannula 12, and a cutting member 61 is disposed at a proximal end of outer cannula 12 for engaging a target tissue and forming an incision. A part of the suction tube 41 is housed in the outer tube 12.

In some embodiments of the present invention, the cutting member 61 is a cutting edge.

Specifically, the proximal end of the suction tube 41 is accommodated in the outer cannula 12, and the axial length D of the proximal end of the suction tube 41 from the proximal end of the outer cannula 12 is a fixed value.

In some embodiments of the invention, D is no more than 7 mm.

In some embodiments of the present invention, D is 5.5-6.5 mm, so as to ensure that the suction tube 41 has good suction effect and does not damage the eardrum.

On one hand, if the value D is too large, the suction efficiency of the suction tube 41 is affected, so that excessive tympanometric effusion remains between the proximal end of the outer sleeve 12 and the proximal end of the suction tube 41, which is not beneficial to the smooth discharge of the subsequent tympanometric effusion; if the value of D is too small, at least a portion of the distal end of the suction tube 41 will extend beyond the proximal end of the outer cannula 12. since the cutting element is further disposed at the proximal end of the outer cannula 12, the extending suction tube 41 may interfere with the operation of the cutting element and may even cause unnecessary damage to the eardrum.

On the other hand, the outer sleeve 12 is internally provided with the suction tube 41, and the opening of the suction tube 41 is opposite to the opening of the outer sleeve 12, so that the disposable absorption of the tympanomenculus effusion is more in volume, the discharge efficiency of the tympanomenculus effusion is improved, and the pain of a patient can be quickly and effectively relieved.

Referring to fig. 6, a portion of the push tube 31 is housed within the outer sleeve 12. The pushing tube 31 and the ventilating device 62 are sequentially sleeved on different parts of the outer side wall of the suction tube 41 along the extending direction of the outer sleeve 12, so that the suction tube 41 is communicated with the inside of the ventilating device 62 to form a suction channel, the disposable absorption of the effusion in the tympanic cavity is facilitated, and the discharge efficiency of the effusion in the tympanic cavity is improved.

Specifically, referring to fig. 5 and 6, the pushing tube 31 is movably sleeved on the outer side wall of the suction tube 41 to move along the extending direction of the outer cannula 12 under the driving of the adjusting member 111 and act on the venting device 62, so that the venting device 62 can move away from the outer cannula 12 to be placed on the incision.

More specifically, the pushing tube 31 acts on the ventilating device 62 until the ventilating device 62 is placed in the incision, and the ventilating device 62 does not separate from the outer sleeve 12, which means that even if tympanometric effusion is discharged while the incision is formed, the tympanometric effusion can be immediately discharged through the suction channel established between the ventilating device 62 and the suction tube 41, so that the tympanometric effusion which flows out can be effectively prevented from blocking the ventilating device 62, and the use safety is good. When the ventilation device 62 is arranged in the incision, and the effusion in the tympanum flowing out after the incision is formed is discharged, the outer sleeve 12 is slowly kept away from the incision to be separated from the ventilation device 62, the implantation of the ventilation device 62 is completed, and the effusion in the tympanum generated in the subsequent ear is timely led out of the ear canal through the ventilation device 62.

Fig. 7 is a schematic view of the assembled structure of the outer sleeve and the venting device shown in fig. 6.

Referring to fig. 7, the outer side wall of the outer sleeve 12 is provided with a channel 73 communicated with the cutting edge face 74, and the air breather 62 is arranged in the outer sleeve 12 through the channel 73.

Specifically, referring to fig. 6 and 7, the ventilation device 62 includes a stopper 71 and a tubular body 72, and the tubular body 72 receives the proximal end of the suction tube 41. The limiting member 71 is disposed on an outer sidewall of the tubular body 72, and the air vent device 62 can be mounted on the outer sleeve 12 in a proper position by adjusting the limiting member 71. When the vent 62 is placed in the incision, the stop 71 is located outside the target tissue, i.e., the stop 71 does not pass through the incision.

In some embodiments of the present invention, at least a portion of the outer wall of the tubular body 72 is attached to the inner wall of the outer sleeve 12, and a portion of the inner wall of the tubular body 72 is attached to the outer wall of the suction tube 41, so that the tubular body 72 is elastically deformed, and the suction channel has good sealing performance.

Specifically, referring to fig. 6 and 7, a portion of the outer wall of the venting device 62 near the proximal end is closely attached to the inner wall of the outer sleeve 12, and the remaining outer wall is spaced from the inner wall of the outer sleeve 12 to facilitate the venting device 62 to move toward the incision under the action of the pushing tube 31.

In some embodiments of the present invention, the gap between the remaining outer wall of the vent 62 and the inner wall of the outer sleeve 12 is 0.2-0.4 mm.

In some embodiments of the present invention, the tubular body 72 is made of an elastic material, so that at least a portion of the outer wall of the tubular body 72 is closely attached to the inner wall of the outer sleeve 12 and a portion of the inner wall of the tubular body 72 is attached to the outer wall of the suction tube 41, thereby generating the elastic deformation.

In some embodiments of the present invention, the surface roughness of the inner wall of the outer cannula 12 is not greater than 0.4, the surface roughness of the outer wall of the suction tube 41 is not greater than 0.2, and the surface roughness of the inner wall surface and the outer wall surface of the pushing tube 31 is not greater than 0.2, so that the pushing tube 31 can smoothly act on the tubular body 72 to place the ventilator 62 at the incision.

In some embodiments of the present invention, the surface roughness of the inner wall of the outer casing 12 is not less than 0.1, the surface roughness of the outer wall of the suction tube 41 is not less than 0.1, and the surface roughness of the inner wall and the outer wall of the pushing tube 31 is not less than 0.1.

In some embodiments of the present invention, the inner wall and the outer wall of the outer sheath 12 have the same surface roughness, the inner wall and the outer wall of the suction tube 41 have the same surface roughness, and the inner wall and the outer wall of the push tube 31 have the same surface roughness.

In some embodiments of the present invention, the material of the suction tube 41 is one of polyamide, polypropylene and polyethylene, so as to facilitate outflow of the tympanometric effusion and facilitate movement of the push tube 31 relative to the suction tube 41; the outer sleeve 12 is made of metal, so that a good supporting effect can be achieved, and the relative movement direction of the pushing tube 31 and the suction tube 41 can be effectively restricted.

Fig. 8 is a schematic structural view of an airway device according to some embodiments of the present invention. Fig. 9 is a schematic view of the vent apparatus shown in fig. 8, taken along direction B.

In the ventilation device shown in fig. 8, the retaining member 71 is disposed in the middle of the outer wall of the tubular main body 72, and the bevel structure 81 is disposed at the proximal end of the tubular main body 72, and the bevel structure 81 is inclined to the axis of the tubular main body 72.

Specifically, referring to fig. 8 and 9, the bezel structure 81 is a hollow cylinder surrounded by a front end surface 811 and a rear end surface 814, and a side surface 813 and a side plane 812 between the front end surface 811 and the rear end surface 814.

Specifically, the limiting member 71 is cylindrical and is disposed perpendicular to the axis of the tubular body 72, and the opening of the bevel structure 81 is communicated with the inside of the tubular body 72. The outer diameter of the bevel structure 81 is larger than the outer diameter of the tubular body 72, so that after the bevel structure 81 penetrates through the incision, the incision is always located between the stopper 71 and the bevel structure 81 in the process of operating the outer sleeve 12 to slowly move away from the incision to separate from the vent device shown in fig. 8, and the vent device shown in fig. 8 is ensured not to slip off from the incision.

In some embodiments of the present invention, the material of the tubular body 72 and the bevel structure 81 is an elastic degradable material, and the bevel structure 81 is accommodated in the outer sleeve 12 before the pushing tube 31 acts on the tubular body 72.

Specifically, referring to fig. 6 and 8, the degree of elastic deformation of the bevel structure 81 in the outer sleeve 12 is greater than the degree of elastic deformation of the tubular column 72 in the outer sleeve 12, so as to ensure the sealing performance of the suction channel. The side plane 812 is provided and the bevel structure 81 is inclined to the axis of the tubular column 72, so as to reduce the elastic deformation of the bevel structure 81 as much as possible, so that the bevel structure 81 can be quickly restored after being detached from the outer sleeve 12.

In some embodiments of the present invention, referring to fig. 6, 8 and 9, when the ventilation device shown in fig. 8 is accommodated in the outer sleeve 12, the bevel structure 81 is elastically deformed, so that the rear end surface 814 is tightly attached to the inner wall of the outer sleeve 12, a gap exists between the outer sidewall of the tubular column 72 and the inner sidewall of the outer sleeve 12, and a part of the inner sidewall of the tubular column 72 is attached to the suction tube 41, so as to realize good sealing performance while being elastically deformed.

In some embodiments of the present invention, the tubular body 72 and the bezel structure 81 are composed of the same or different elastically degradable materials.

In some embodiments of the present invention, the ventilation device shown in fig. 8 is made of the elastic degradable material, and is suitable for patients with light ear diseases and requiring less than 3 months of insertion time, and the elastic degradable material can be slowly decomposed into water and carbon dioxide in a period of time, and can be discharged through the eustachian tube or the upper hole of the tympanic membrane, so that the pain of taking out the tube after the patient is cured can be reduced.

Specifically, the elastic degradable material is at least one of polylactic acid (PLA), L-polylactic acid (PLLA), polyglycolic acid/polylactic acid copolymer (PGLA), Polycaprolactone (PCL), polyhydroxybutyrate valerate (PHBV), polyglutamic acid (PAGA), Polyorthoesters (POE), and polyethylene oxide/polybutylene copolymer (PEO/PBTP), polydioxanone (poly-p-dioxanone, PPDO), polybutylene succinate (PBS), polysachlorohydrin (polysachyl alcohol), polysachlorohydrin (polyvinyl acetate), and polyvinyl alcohol (PVA).

In some embodiments of the present invention, referring to fig. 8 and 9, the outer surface of the tubular body 72 includes a drug loading region 82, the drug loading region 82 being located between the stop 71 and the proximal end of the tubular body 72. The drug carrying region 82 comprises a plurality of groove structures (not shown), and concave surfaces of the groove structures (not shown) are loaded with drug coatings, so that the drug coatings are prevented from falling off due to contact with the inner wall of the outer sleeve 12. The drug-loaded area 82 is beneficial to playing a role in inhibiting bacteria and diminishing inflammation on the incision and the environment inside the target tissue through drugs.

Specifically, a removing process is performed on a portion of the outer surface of the tubular body 72 to form the groove structure.

More specifically, the groove structure is a hemispherical groove.

In some embodiments of the present invention, the drug loading area 82 further comprises the front end surface 811 and the side surface 813. In other embodiments of the present invention, the drug loading area 82 further comprises at least a portion of the front end surface 811 and at least a portion of the side surface 813.

In some embodiments of the present invention, the side plane 812 and the rear end surface 814 do not have the drug-carrying region 82, so as to avoid the risk of drug falling off due to the fact that the vent device shown in fig. 8 is accommodated in the outer sleeve 12, so that the drug-carrying region 82 contacts the inner wall of the outer sleeve 12.

In some embodiments of the present invention, the drug coating is a controlled drug release coating to quantitatively release the drug.

In some embodiments of the invention, the drug control coating is comprised of a drug and a controlled release component.

Specifically, the drug is a steroid anti-inflammatory drug or a derivative of the alcohol anti-inflammatory drug.

More specifically, the steroidal anti-inflammatory drugs include 21-acetoxypregnenolone, alclometasone, algestrol, amcinonide, beclomethasone, betamethasone, budesonide, prednisolone, clobetasol, clobetasone, clocortolone, prednolone, corticosterone, cortisone, codevazole, deflazacort, desonide, desoximetasone, dexamethasone, diflorasone, diflucortolone, difluoropregnane butyl ester, glycyrrhetinic acid, fluzacort, fluocinolone acetonide, flumethasone, foronide, fluocinonide, fluocortolide, fluocinolone acetonide, fluoromethalone, fluocinolone acetate, fluprednide, flurbiprofen, fluocinolone acetonide, fluticasone propionate, alder, halcinonide, halobetasol propionate, haloprednide, hydrocortisone, escolone, etasone, lotione, and loteprinonol acetate, At least one of methylprednisolone, medrysone, methylprednisolone, mometasone furoate, paramethasone, prednisolone, 25-diethylamino prednisolone acetate, prednisolone sodium phosphate, prednisone, prednisolone valerate, prednisolone, rimexolone, tixocortol, triamcinolone acetonide, and triamcinolone hexacetonide.

In some embodiments of the invention, the controlled release component comprises a hydrophilic degradable carrier and a hydrophobic carrier. The hydrophilic carrier, the hydrophobic carrier and the drug are mixed in proportion and then loaded on the drug loading area 82. When the vent shown in fig. 8 is placed in the incision, the hydrophilic vehicle slowly breaks down and releases the drug first, and then the hydrophobic vehicle slowly breaks down and releases the drug.

In some embodiments of the present invention, the hydrophobic carrier is composed of a degradable material, and the hydrophobic carrier slowly releases the drug while degrading with the ventilation device shown in fig. 8.

Fig. 10 is a schematic structural view of another venting device in accordance with some embodiments of the present invention. Figure 11 is a schematic view of the vent shown in figure 10 after being flipped 180 degrees around the arcuate configuration.

Referring to fig. 10 and 11, in the ventilation device shown in fig. 10, the proximal end of the tubular body 72 is provided with an arc-shaped structure 101, and the outer wall near the distal end of the tubular body 72 is provided with the stopper 71. The arcuate structure 101 is perpendicular to the tubular body 72 and has opposing arcuate concave 102 and arcuate convex 103 surfaces, the arcuate concave surface 102 being a proximal end of the arcuate structure 101.

In some embodiments of the present invention, in the airway device shown in fig. 10, the tubular body 72 and the arc-shaped structure 101 are made of an elastic non-degradable material, and before the pushing tube 31 acts on the tubular body 72, the two ends of the arc-shaped structure 101 converge towards the axis of the tubular body 72 along the directions C1 and C2 shown in fig. 11, respectively, so as to be accommodated in the outer sleeve 12, and a portion of the arc-shaped convex surface 103 is attached to the inner wall of the outer sleeve 12.

In some embodiments of the present invention, the tubular body 72 and the bezel structure 81 are made of the same or different elastic non-degradable materials.

In some embodiments of the present invention, the airway device shown in fig. 10 is made of the elastic non-degradable material, and is suitable for patients with severe ear diseases and requiring insertion for more than 3 months, and the arc-shaped structure 101 is arranged in such a way that the airway device shown in fig. 10 can be more stably placed in the incision without slipping.

In some embodiments of the invention, the elastic non-degradable material is medical silicone rubber.

In some embodiments of the present invention, the outer surface between the retaining member 71 and the proximal end of the tubular body 72, and the arc-shaped concave surface 102 of the arc-shaped structure 101 have the drug-loading region (not shown).

In some embodiments of the present invention, the drug-loading region does not exist on the arc-shaped convex surface 103, so as to avoid the risk of drug falling off due to the fact that the venting device shown in fig. 10 is accommodated in the outer sleeve 12, so that the drug-loading region contacts the inner wall of the outer sleeve 12.

In some embodiments of the present invention, the outer wall of the outer sleeve 12 near the proximal end is provided with a visualization structure, which includes a luminous scale mark to assist in determining the depth of the cut and to assist in confirming the depth of the effusion while simultaneously attracting the effusion.

Specifically, the luminous scale marks are a plurality of circumferential scale marks formed around the outer wall of the outer sleeve 12. The plurality of circumferential scale marks are coated with a luminescent coating.

Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the following claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims

1. An ear surgery device, comprising a grip portion and an insertion portion arranged in sequence, and a ventilation device movably arranged on the insertion portion, wherein the grip portion comprises an adjusting member, and the insertion portion It comprises an outer sleeve, a suction tube and a push tube, the ventilation device includes a tubular body, and the suction tube and the outer sleeve are coaxially arranged;

The proximal end of the outer sleeve is provided with a cutting member to act on the target tissue and form an incision, and the proximal end is defined as the end close to the target tissue;

At least a part of the suction tube and at least a part of the push tube are accommodated in the outer sleeve, and the push tube and the tubular body are sequentially sleeved on the outer side wall of the suction tube along the extension direction of the outer sleeve The different parts of the suction tube communicate with the interior of the tubular body to form a suction channel;

The adjusting member is connected with the push tube, so as to drive the push tube to move along the extending direction of the insertion portion and act on the tubular body, so that the ventilation device is placed in the cutout.

2 . The ear surgery device according to claim 1 , wherein the proximal end of the suction tube is accommodated in the tubular body, and the proximal end of the suction tube is axially distanced from the proximal end of the outer sleeve. 3 . The length is fixed and does not exceed 7 mm.

3 . The ear surgery device according to claim 1 , wherein at least a part of the outer wall of the tubular body is fitted with the inner wall of the outer sleeve, and a part of the inner wall of the tubular body is in contact with the inner wall of the suction tube. 4 . The outer walls are in contact with each other, so that the tubular body can be elastically deformed, and the suction channel has good sealing performance.

4 . The ear surgery device according to claim 3 , wherein the surface roughness of the inner wall of the outer sleeve is not more than 0.4, the surface roughness of the outer wall of the suction tube is not more than 0.2, and the surface roughness of the inner wall of the pushing tube is not more than 0.2. 5 . And the surface roughness of the outer wall surface is not more than 0.2.

5. The ear surgical device of claim 4, wherein a portion of the outer sidewall and a portion of the inner sidewall of the outer sleeve from the proximal end are coated with a lubricating layer to further reduce surface roughness, the The axial length of the lubricating layer along the extending direction of the outer sleeve is 25-35 mm.

6 . The ear surgery device according to claim 4 , wherein the suction tube is made of one of polyamide, polypropylene and polyethylene, the outer sleeve is made of metal, and the The constituent material of the tubular body is an elastic material.

7 . The ear surgery device according to claim 1 , wherein the ventilation device further comprises a limiting member, the limiting member is disposed on the outer side wall of the tubular body, and the ventilation device is placed on the After the incision is made, the limiting member is located outside the target tissue, the outer surface of the tubular body includes a drug-loading area, and the drug-loading area is located between the limiting member and the proximal end of the tubular body.

8 . The ear surgical device according to claim 7 , wherein the drug-carrying area comprises a plurality of groove structures, and the concave surfaces of the groove structures are loaded with a drug coating, so as to avoid the drug coating due to damage caused by the drug coating. It comes into contact with the inner wall of the outer sleeve and falls off.

9 . The ear surgery device according to claim 8 , wherein the drug coating is a drug controlled release coating to release drugs quantitatively. 10 .

10 . The ear surgery device according to claim 7 , wherein the proximal end of the tubular body is provided with an oblique opening structure, and the oblique opening structure is inclined to the axis of the tubular body and has an outer diameter greater than that of the tubular body. 11 . the outer diameter of the tubular body, and the drug-carrying area is also located on at least part of the front end face and at least part of the side surface of the bevel structure.

11 . The ear surgery device according to claim 10 , characterized in that, the constituent material of the tubular body and the oblique opening structure is elastic and degradable material, and before the push tube acts on the tubular body, the The oblique opening structure is accommodated in the outer sleeve.

12 . The ear surgical device according to claim 7 , wherein the proximal end of the tubular body is provided with an arc-shaped structure, the arc-shaped structure is perpendicular to the tubular body, and the arc-shaped structure comprises an arc-shaped structure. 13 . The drug-carrying area is also located at at least a part of the arc-shaped concave surface, and the arc-shaped concave surface is opposite to the arc-shaped convex surface and is the proximal end of the arc-shaped structure.

13 . The ear surgery device according to claim 12 , wherein the constituent material of the tubular body and the arc-shaped structure is an elastic non-degradable material, and the pushing tube acts on the tubular body before the The arc-shaped structure is accommodated in the outer sleeve, and a part of the arc-shaped convex surface is fitted with the inner wall of the outer sleeve.

14. The ear surgical device according to claim 1, wherein the outer wall near the proximal end of the outer sleeve is provided with a developing structure, and the developing structure includes a luminous scale mark to assist in determining the cutting depth and at Aspirate the effusion while assisting in confirming the depth of the effusion.