Expandable drainage type filling device for middle ear and mastoid process operation cavity

Abstract

The invention discloses an expandable drainage type filling device for a middle ear and mastoid process cavity, and relates to the technical field of medical instruments, the expandable drainage type filling device comprises a plunger body and a drainage tube, the plunger body sleeves the periphery of the drainage tube, two ends of the drainage tube respectively extend to two ends of the plunger body, two ends of the drainage tube are both open, and the plunger body sleeves the periphery of the drainage tube. A plurality of through holes are formed in the side wall of the drainage tube, the plunger body can expand and support graft / stuffing in the ear canal or mastoid process cavity of a patient after encountering secretions, redundant secretions can permeate into the drainage tube through the through holes, and the interior of the ear canal of the patient can be communicated with the outside through the drainage tube. And the drainage tube is used for draining secretions out of the auditory meatus or the mastoid process cavity of the patient, ventilating and supplying oxygen into the auditory meatus or the mastoid process cavity of the patient and dosing into the auditory meatus or the mastoid process cavity of the patient. According to the invention, a stable supporting effect can be provided for the auditory meatus / mastoid process, and drainage oxygen supply and in-situ targeted drug delivery can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an expandable drainage packing device for middle ear and mastoid surgery cavities. Background Art

[0002] Currently, surgical cavity packing is usually required after middle ear and mastoid surgery. The packing supports the newly constructed tympanic membrane, graft (such as fascia), and artificial ossicles, thereby preventing them from shifting, collapsing, or deforming, and can help maintain the shape and volume of the newly formed surgical cavity. At the same time, the packing occupies space, which can significantly reduce dead space and effusion, reduce the risk of infection, and while playing a role in compression and hemostasis, it can also inhibit the proliferation of granulation / scar tissue.

[0003] In the existing technology, the surgical cavity packing after middle ear and mastoid surgery mainly relies on the following two types of materials: (1) expandable polymer sponges (such as gelatin sponges and polyurethane expandable sponges), which expand when exposed to blood after implantation and provide basic pressure. They are often used in nasal surgery and have been tried in ear surgery in recent years; (2) traditional gauze packings (such as iodoform gauze and vaseline gauze), which achieve static compression through physical packing and are still the mainstream packing method after ear surgery.

[0004] However, there are significant problems in clinical application of the above materials:

[0005] (1) Insufficient compression function: mainly involves gauze. Gauze packing provides static compression, which reduces tissue swelling after surgery and makes the graft easy to shift;

[0006] (2) Drainage and ventilation disorders: mainly related to polymer sponges. After swelling and absorbing water, secretions are retained deep in the packing body. Long-term packing easily increases the chance of infection, and the deep part of the surgical cavity suffers from long-term hypoxia, which delays the epithelialization process (healing period ≥ 4 weeks);

[0007] (3) The drug administration operation is highly traumatic: the packing material must be removed before local medication can be administered. Repeated operations can easily damage the new tissue and cause graft displacement. In addition, the drug cannot accurately reach the deep part of the surgical cavity, and its bioavailability is low. Summary of the Invention

[0008] The purpose of the present invention is to provide an inflatable drainage packing device for the middle ear and mastoid surgery cavity to solve the problems existing in the above-mentioned prior art, which can provide stable support for the ear canal / mastoid, and can achieve drainage, oxygen supply and in situ targeted drug delivery.

[0009] To achieve the above object, the present invention provides the following solutions:

[0010] The present invention provides an expandable drainage packing device for the middle ear and mastoid surgery cavity, comprising a plunger body and a drainage tube, wherein the plunger body is sleeved on the outer circumference of the drainage tube, and the two ends of the drainage tube extend to the two ends of the plunger body respectively, and both ends of the drainage tube are open, and a plurality of through holes are provided on the side wall of the drainage tube. The plunger body can expand and be supported in the patient's ear canal or mastoid cavity after encountering secretions, and excess secretions can penetrate into the drainage tube through the through holes. The drainage tube can connect the inside of the patient's ear canal with the outside world, and the drainage tube is used to drain secretions to the outside of the patient's ear canal or mastoid cavity, ventilate and oxygenate the patient's ear canal or mastoid cavity, and administer medicine to the patient's ear canal or mastoid cavity.

[0011] Preferably, the plunger body is in the shape of an elongated strip.

[0012] Preferably, the two ends of the plunger body are a large end and a small end respectively, and the outer diameter of the plunger body gradually decreases from the large end to the small end, and the small end is used to extend into the patient's ear canal or mastoid cavity.

[0013] Preferably, scale lines are provided along the length direction of the plunger body.

[0014] Preferably, the plunger body before expansion has a length of 4 cm, a width of 0.5 cm to 1 cm, and a thickness of 0.2 cm to 0.3 cm.

[0015] Preferably, the plunger body is made of hydroxypropyl methylcellulose.

[0016] Preferably, the diameter of the through hole is 0.3 mm to 0.8 mm.

[0017] Preferably, the drainage tube is made of silicone material.

[0018] Compared with the prior art, the present invention has achieved the following technical effects:

[0019] The inflatable drainage packing device for the middle ear and mastoid surgery cavity provided by the present invention comprises a plunger body and a drainage tube. The plunger body is sleeved on the outer circumference of the drainage tube, and the two ends of the drainage tube extend to the two ends of the plunger body respectively, ensuring that the plunger body will not cause blockage to the two ends of the drainage tube. Both ends of the drainage tube are open, and a plurality of through holes are provided on the side wall of the drainage tube, so that secretions or exudates can penetrate into the inner cavity of the drainage tube through the through holes or the drainage tube at the end for extending into the patient's ear canal or mastoid cavity, so as to drain the secretions or exudates in the patient's ear canal or mastoid cavity to the outside of the body through the drainage tube. On the other hand, the drainage tube can also be used as a ventilation and drug administration channel. As time passes after the operation, the secretions in the surgical cavity decrease. The amount of exudate or exudate gradually decreases, and air can enter the surgical cavity to provide oxygen for tissue growth. At the same time, antibiotic ear drops can be dripped into the drainage tube, so that the drug can penetrate into the plunger body located outside the drainage tube through the through hole, and penetrate into the surrounding grafts or surgical cavity through the plunger body to effectively exert the efficacy. After encountering the ear drops, the plunger body can continue to expand and support in the patient's ear canal or mastoid cavity to provide stable and moderate pressure, ensuring that there is no dead space (space for blood or fluid accumulation) between the flap / graft and the wound, promoting close adhesion between the two, and facilitating blood vessel growth and healing, thereby solving the problems of deep oxygen supply and in situ targeted drug delivery, and avoiding damage caused by repeated removal of the plunger body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a cross-sectional view of an expandable drainage packing device for middle ear and mastoid surgery cavity according to the present invention;

[0022] In the figure: 1- plunger body, 2- drainage tube, 3- through hole. DETAILED DESCRIPTION

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The purpose of the present invention is to provide an inflatable drainage packing device for the middle ear and mastoid surgery cavity to solve the problems existing in the prior art, which can provide stable support for the ear canal / mastoid, and can achieve drainage, oxygen supply and in situ targeted drug delivery.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 As shown, the present embodiment provides an expandable drainage packing device for the middle ear and mastoid surgery cavity, which is mainly used for postoperative surgery cavity packing in otolaryngology middle ear surgery (such as external ear canal plasty, tympanoplasty and mastoidectomy), comprising a plunger body 1 and a drainage tube 2. The plunger body 1 is sleeved on the outer periphery of the drainage tube 2, and the two ends of the drainage tube 2 extend to the two ends of the plunger body 1 respectively, to ensure that the plunger body 1 does not cause blockage to the two ends of the drainage tube 2. Both ends of the drainage tube 2 are open, and a plurality of through holes 3 are provided on the side wall of the drainage tube 2, so that secretions or exudates can penetrate into the inner cavity of the drainage tube 2 through the through holes 3 or the end of the drainage tube 2 that is used to extend into the patient's ear canal or mastoid cavity, so as to drain the secretions or exudates in the patient's ear canal or mastoid cavity to the outside of the body through the drainage tube 2. On the other hand, the drainage tube 2 can also serve as a ventilation and drug delivery channel. As time passes after the operation, the secretions or exudates in the surgical cavity gradually decrease, and air can enter the surgical cavity to provide oxygen for tissue growth. At the same time, antibiotic ear drops can be dripped into the drainage tube 2, so that the medicine can penetrate into the plunger body 1 located outside the drainage tube 2 through the through hole 3, and penetrate into the surrounding grafts or surgical cavity through the plunger body 1 to effectively exert the efficacy of the medicine. After encountering the ear drops, the plunger body 1 can continue to expand and support the patient's ear canal or mastoid cavity to provide stable and moderate pressure, ensuring that there is no dead space (space for blood or fluid accumulation) between the flap / graft and the wound surface, promoting close adhesion between the two, and facilitating blood vessel growth and healing, thereby solving the problems of deep oxygen supply and in situ targeted drug delivery, and avoiding damage caused by repeated removal of the plunger body 1.

[0027] Specifically, the plunger body 1 is in the shape of an elongated strip, and thus can adapt to the shape of the patient's ear canal or mastoid cavity to provide good support and compression effects.

[0028] The two ends of the plunger body 1 are respectively a large end and a small end, and the outer diameter of the plunger body 1 gradually decreases from the large end to the small end. The small end is used to extend into the patient's ear canal or mastoid cavity to adapt to the shape of the patient's ear canal and mastoid cavity.

[0029] Scale lines are provided along the length direction of the plunger body 1, which are used to indicate the length of the plunger body 1 and help to judge the insertion depth of the plunger body 1. In addition, during clinical use, medical staff can cut the length and width directions of the plunger body 1 according to actual needs to provide appropriate support force.

[0030] As a preferred solution in this embodiment, the length of the plunger body 1 before expansion is 4 cm, the width is 0.5 cm to 1 cm, and the thickness is 0.2 cm to 0.3 cm. Those skilled in the art can also make adaptive adjustments to the above dimensions according to actual needs as long as they can meet the needs of use.

[0031] As a preferred solution in this embodiment, the plunger body 1 is made of hydroxypropyl methylcellulose material. Those skilled in the art can also use other materials with high expansion rates (expansion ≥150% when exposed to liquid), similar to biocompatible polymer materials, to achieve the effect of dynamic expansion and compression, and then continuously and adaptively apply pressure to ensure that the graft adheres to the wall.

[0032] As a preferred solution in this embodiment, the diameter of the through hole 3 is 0.3 mm to 0.8 mm. Those skilled in the art can also make adaptive adjustments to the above dimensions according to actual needs, as long as the use requirements can be met.

[0033] The drainage tube 2 is made of silicone material, and those skilled in the art can also choose other materials according to actual needs.

[0034] Since secretions will continue to seep out of the ear canal or mastoid cavity after external ear canal plasty, tympanoplasty and radical mastoidectomy, when the inflatable drainage packing device for the middle ear and mastoid cavity in this embodiment is used, the secretions will enter the plunger body 1, and then enter the drainage tube 2 through the through hole 3 on the side wall of the drainage tube 2, and then be discharged from the body; at the same time, air can enter the deep surgical cavity through the drainage tube 2, solving the problems of secretion drainage and deep hypoxia; and when medication is needed, antibiotic ear drops, growth factors, etc. are directly infused through the outer end of the drainage tube 2 to achieve in situ targeted drug delivery, thereby avoiding damage caused by repeated removal of the plunger body 1. The drug penetrates into the outer plunger body 1 through the through hole 3, and then penetrates into the surrounding grafts or surgical cavity to exert its efficacy. Through the above-mentioned design of the plunger body 1 and the drainage tube 2, this embodiment can simultaneously achieve deep drainage (microporous infiltration) + deep oxygen supply (silicone tube ventilation) + non-invasive drug delivery (luminal perfusion), and can be used for filling treatment of surgical cavities after otology surgeries such as tympanoplasty and radical mastoidectomy, and is easy to promote and use.

[0035] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An expandable drainage packing device for middle ear and mastoid surgery, characterized by: It includes a plunger body and a drainage tube, the plunger body is sleeved on the outer circumference of the drainage tube, and the two ends of the drainage tube extend to the two ends of the plunger body respectively, both ends of the drainage tube are open, and a plurality of through holes are opened on the side wall of the drainage tube. The plunger body can expand and support the graft / filling in the patient's ear canal or mastoid cavity after encountering secretions, and excess secretions can penetrate into the drainage tube through the through holes. The drainage tube can connect the inside of the patient's ear canal with the outside world, and the drainage tube is used to drain secretions to the outside of the patient's ear canal or mastoid cavity, ventilate and oxygenate the patient's ear canal or mastoid cavity, and administer medicine to the patient's ear canal or mastoid cavity.

2. The expandable drainage packing device for middle ear and mastoid surgery according to claim 1, characterized in that: The plunger body is in the shape of an elongated strip.

3. The expandable drainage packing device for middle ear and mastoid surgery according to claim 2, characterized in that: The two ends of the plunger body are respectively a large end and a small end, and the outer diameter of the plunger body gradually decreases from the large end to the small end, and the small end is used to extend into the patient's ear canal or mastoid cavity.

4. The expandable drainage packing device for middle ear and mastoid surgery according to claim 1, characterized in that: Scale lines are provided in the length direction of the plunger body.

5. The expandable drainage packing device for middle ear and mastoid surgery according to claim 1, characterized in that: The plunger body has a length of 4 cm, a width of 0.5 cm to 1 cm, and a thickness of 0.2 cm to 0.3 cm before expansion.

6. The expandable drainage packing device for middle ear and mastoid surgery according to claim 1, characterized in that: The plunger body is made of hydroxypropyl methylcellulose material.

7. The expandable drainage packing device for middle ear and mastoid surgery according to claim 1, characterized in that: The diameter of the through hole is 0.3 mm to 0.8 mm.

8. The expandable drainage packing device for middle ear and mastoid surgery according to claim 1, characterized in that: The drainage tube is made of silicone material.

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