Double-channel tympanic membrane puncture needle

Abstract

The utility model relates to the technical field of medical equipment, in particular to a double-channel tympanic membrane puncture needle. When in use, all the components of the device are assembled firstly, the limiting bead is adjusted to be located in the second groove, the second connecting channel is kept to be located below the first connecting channel, puncture is conducted, after the needle head punctures the tympanic membrane, the piston of the first needle cylinder is moved backwards, a low-pressure area is created, middle ear pus is sucked, and after suction is completed, the first needle cylinder and the second needle cylinder are separated from each other. The second needle cylinder is pushed, the limiting bead located in the second groove moves into the first groove under the pushing force of the liquid medicine, the second connecting channel is opened, the liquid medicine is injected into the middle ear, needle cylinder replacement or secondary puncture is not needed in the whole process, operation is simplified, the tympanic membrane trauma possibility is reduced, and meanwhile the operation efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and particularly relates to a double-channel tympanocentesis needle. Background Art

[0002] At present, the tympanocentesis needles used at home and abroad are usually single-headed designs and can only be connected to one syringe. In the case of simultaneously aspirating middle ear pus and injecting medicine into the middle ear, doctors usually need to perform complex operations: fixing the needle handle with one hand and replacing the syringe with the other hand, or performing a second puncture. This operation method has some obvious disadvantages and challenges.

[0003] Firstly, manually replacing the syringe or performing a second puncture easily causes additional damage to the eardrum because each operation may increase the chance of contacting and puncturing the eardrum. The eardrum is a very fragile tissue, and excessive punctures may cause trauma and even long-term complications such as an increased risk of hearing loss or infection. Secondly, this operation method is not only cumbersome but also time-consuming, which may increase the discomfort and anxiety during the operation, especially for young or anxious patients, the discomfort or anxiety will be intensified.

[0004] In summary, there is an urgent need for a double-channel tympanocentesis needle that can simplify the operation, reduce the possibility of eardrum trauma, and improve the efficiency and safety of the operation. Summary of the Utility Model

[0005] In view of the above problems, the utility model provides a double-channel tympanocentesis needle, which can simplify the operation, reduce the possibility of eardrum trauma, and improve the efficiency and safety of the operation.

[0006] The technical solution of the utility model is: a double-channel tympanocentesis needle, including a syringe and a needle head. The needle head includes a first connection channel and a second connection channel. The syringe includes a first syringe and a second syringe. The first syringe is detachably connected to the needle head through the first connection channel for aspirating middle ear pus, and the second syringe is detachably connected to the needle head through the second connection channel for injecting medicine; a limiting mechanism is further provided at the intersection of the first connection channel and the second connection channel, and the limiting mechanism makes the first connection channel and the second connection channel independent of each other.

[0007] Preferably, the limiting mechanism includes a first groove, a second groove and a limiting bead. The first groove is arranged on the inner wall of the first connection channel, the second groove is arranged on the inner wall of the second connection channel, and the limiting bead is respectively adapted to the first groove and the second groove.

[0008] Preferably, when the limiting bead is located in the second groove, the first connection channel can pass middle ear pus.

[0009] Preferably, when the second connection channel is injecting the liquid medicine, the limiting bead is located in the first groove

[0010] Preferably, the angle between the first connection channel and the second connection channel is 20° to 40°.

[0011] Preferably, the volume of the first syringe is 1 ml to 2 ml.

[0012] Preferably, the volume of the first syringe is 1 ml to 2 ml.

[0013] Preferably, both the first syringe and the second syringe are structural parts made of polypropylene material.

[0014] The beneficial effects of the present utility model are as follows:

[0015] In this application, the needle head is provided with a first connection channel and a second connection channel. The inner wall of the first connection channel is provided with a first groove, and the inner wall of the second connection channel is provided with a second groove. The limiting beads are respectively in the first groove or the second groove. The first syringe and the second syringe are respectively detachably connected to the first connection channel and the second connection channel. When in use, first assemble the various components of this application, adjust the limiting beads to be located in the second groove, keep the second connection channel below the first connection channel, and perform puncture. After the needle head punctures the eardrum, move the piston of the first syringe backward to create a low-pressure area, aspirate the middle ear pus. After the aspiration is completed, push the second syringe. The limiting beads in the second groove are displaced into the first groove under the thrust of the liquid medicine, and the second connection channel is opened to inject the liquid medicine into the middle ear. The whole process does not require replacing the syringe or secondary puncture, simplifies the operation, reduces the possibility of eardrum trauma, and improves the efficiency and safety of the operation at the same time. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic diagram of the needle head when aspirating pus of the present utility model;

[0018] Figure 3 is a schematic diagram of the needle head when injecting liquid medicine of the present utility model.

[0019] Description of the Reference Numerals:

[0020] 1 - syringe, 11 - first syringe, 12 - second syringe, 2 - needle head, 21 - first connection channel, 22 - second connection channel, 3 - limiting mechanism, 31 - first groove, 32 - second groove, 33 - limiting bead. Detailed Embodiments

[0021] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0022] Embodiment 1:

[0023] A double-channel tympanocentesis needle, comprising a syringe barrel 1 and a needle tip 2. The needle tip 2 includes a first connection channel 21 and a second connection channel 22. The syringe barrel 1 includes a first syringe barrel 11 and a second syringe barrel 12. The first syringe barrel 11 is detachably connected to the needle tip 2 through the first connection channel 21 for aspirating middle ear pus, and the second syringe barrel 12 is detachably connected to the needle tip 2 through the second connection channel 22 for injecting liquid medicine; a limiting mechanism 3 is further provided at the intersection of the first connection channel 21 and the second connection channel 22, and the limiting mechanism 3 makes the first connection channel 21 and the second connection channel 22 independent of each other. The needle tip 2 is provided with a needle tip portion, and a bevel is provided at the end of the needle tip. When in use, the needle tip bevel faces upward, and the needle tip is communicated with the first connection channel 21 and the second connection channel 22.

[0024] Specifically, the limiting mechanism 3 includes a first groove 31, a second groove 32 and a limiting bead 33. The first groove 31 is arranged on the inner wall of the first connection channel 21, the second groove 32 is arranged on the inner wall of the second connection channel 22, and the limiting bead 33 is respectively adapted to the first groove 31 and the second groove 32. After adjusting the injection position, when the limiting bead 33 is located in the second groove 32 under the action of gravity, the first connection channel 21 can pass middle ear pus. When injecting liquid medicine through the second connection channel 22, the limiting bead 33 moves upward under the action of fluid pressure, so that the limiting bead 33 is located in the first groove 31, and the second connection channel 22 is communicated, and then liquid medicine can pass through.

[0025] When the present application is in use, first adjust the limiting bead 33 into the second groove 32. After sucking the liquid medicine to be injected by the second syringe barrel 12, connect the first syringe barrel 11 and the second syringe barrel 12 to the first connection channel 21 and the second connection channel 22 respectively. After assembly, keep the needle tip bevel facing upward, with the second connection channel 22 below and the first connection channel 21 above. Preferably, the plane formed by the first connection channel 21 and the second connection channel 22 can be kept perpendicular to the ground. At this time, the limiting bead 33 is located in the second groove 32, blocking the second connection channel 22. Use the needle tip portion of the needle tip 2 to puncture the eardrum, and then move the piston of the first syringe barrel 11 backward to create a low-pressure area in the tube. Middle ear pus will flow into the first syringe barrel 11 through the first connection channel 21, thereby aspirating the middle ear pus. As Figure 2As shown, after the aspiration is completed, when the second syringe 12 is pushed and the liquid medicine flows through the second connection channel 22, under the thrust of the liquid medicine, the limit bead 33 is displaced to the first groove 31. At this time, the first connection channel 21 is blocked, and the liquid medicine is injected into the middle ear through the second connection channel 22, as Figure 3 shown. During the whole process, the first connection channel 21 and the second connection channel 22 work independently of each other, without the need to replace the syringe or perform secondary puncture, which simplifies the operation, reduces the possibility of tympanic membrane trauma, and improves the efficiency and safety of the operation. Further, the connection channel part of the needle 2 can be set as a split structure to facilitate adjusting the position of the limit bead 33.

[0026] Specifically, the angle between the first connection channel 21 and the second connection channel 22 is 20° to 40°. The angle between the first connection channel 21 and the second connection channel 22 can preferably be 30° for easy operation. Among them, when the first connection channel 21 and the second connection channel 22 are connected to the syringe 1, it is a detachable connection. For the specific connection method, refer to the connection method between the needle and the syringe in the prior art.

[0027] Specifically, the volume of the first syringe 11 is 1 ml to 2 ml. The volume of the second syringe 12 is 1 ml to 2 ml. The volume of the first syringe 11 and the second syringe 12 can preferably be 2 mL. The specific specifications can also be adjusted according to the actual situation for the purpose of facilitating operation. Further, the first connection channel 21 and the second connection channel 22 can be set to different transparent colors, such as transparent colorless and translucent blue respectively, so as to distinguish the pus aspiration channel and the liquid medicine injection channel during use.

[0028] Further, the needle 2 can be selected as a 0.5*35TW LB type puncture needle. Further, the tip part of the needle 2 adopts a bevel design and the bevel is upward.

[0029] Specifically, both the first syringe 11 and the second syringe 12 are structural parts made of polypropylene material.

[0030] The above embodiments only represent the specific implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A dual-channel tympanic membrane puncture needle, comprising a syringe (1) and a needle (2), characterized in that: The needle (2) comprises a first connecting channel (21) and a second connecting channel (22); the syringe (1) comprises a first syringe (11) and a second syringe (12); the first syringe (11) is detachably connected to the needle (2) via the first connecting channel (21) and is used for aspirating middle ear pus; the second syringe (12) is detachably connected to the needle (2) via the second connecting channel (22) and is used for injecting liquid medicine; a limiting mechanism (3) is also provided at the intersection of the first connecting channel (21) and the second connecting channel (22); the limiting mechanism (3) makes the first connecting channel (21) and the second connecting channel (22) independent of each other.

2. A dual-channel tympanic membrane puncture needle according to claim 1, characterized in that: The limiting mechanism (3) comprises a first groove (31), a second groove (32) and a limiting bead (33); the first groove (31) is arranged on the inner wall of the first connecting channel (21); the second groove (32) is arranged on the inner wall of the second connecting channel (22); and the limiting bead (33) is respectively adapted to the first groove (31) and the second groove (32).

3. A dual-channel tympanic membrane puncture needle according to claim 2, characterized in that: When the limiting bead (33) is located in the second groove (32), the first connecting channel (21) can pass middle ear pus.

4. A dual-channel tympanic membrane puncture needle according to claim 3, characterized in that: When the second connecting channel (22) passes through the injection liquid, the limiting bead (33) is located in the first groove (31).

5. A dual-channel tympanic membrane puncture needle according to claim 4, characterized in that: The angle between the first connecting channel (21) and the second connecting channel (22) is 20° to 40°.

6. A dual-channel tympanic membrane puncture needle according to claim 5, characterized in that: The volume of the first syringe (11) is 1 ml to 2 ml.

7. A dual-channel tympanic membrane puncture needle according to claim 6, characterized in that: The volume of the second syringe (12) is 1 ml to 2 ml.

8. A dual-channel tympanic membrane puncture needle according to claim 7, characterized in that: The first syringe (11) and the second syringe (12) are both structural parts made of polypropylene material.

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