Tympanic membrane puncture device

Abstract

The utility model relates to the technical field of medical apparatus and instruments provides tympanic membrane puncture device, tympanic membrane puncture device, including the syringe with opening, plunger rod, needle body, and air bag, the syringe is formed with the liquid suction cavity that communicates with the opening, the plunger rod is constituted to move in the syringe to make the plunger rod inward stroke to cause liquid to suck into the cylinder from the opening, needle body is used to supply tympanic membrane puncture, needle body and syringe detachably connect, needle body forms and flows through the passageway, and the passageway communicates with the liquid suction cavity, air bag is adjacent needle head of needle body arrangement, needle body sets up the clamping slot, and the at least partial area of air bag is connected with the clamping slot, and air bag inflates and expands through the inflation device, and the air bag after inflation protrudes on the outer wall of needle body. The utility model provides the buffer to needle body around through air bag expansion, solves because the syringe light weight and easily causes the puncture needle swing because of hand shaking, reduces the risk of damage to the inner wall of ear canal, to improve the operation safety.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, specifically to a tympanic membrane puncture device. Background Technology

[0002] Secretory otitis media is an inflammatory disease of the middle ear characterized by tympanic cavity effusion and hearing loss. The main cause is Eustachian tube obstruction, preventing the drainage of secretions from the middle ear to the pharynx, leading to tympanic cavity effusion. The effusion is usually a mixture of transudate, exudate, and secretions. Clearing the tympanic cavity effusion is key to treating secretory otitis media. Tympanocentesis to aspirate the effusion is the most common and simple treatment method for otitis media.

[0003] Currently, tympanic membrane puncture requires doctors to perform the procedure through the patient's external auditory canal, which is the passage from the outside of the ear to the tympanic membrane. However, because the syringe itself is too light, hand tremors during the procedure can easily cause the puncture needle to swing, and the needle tip can easily scratch the ear canal, causing damage to the inner wall of the ear canal and thus increasing the risk of tissue damage. Therefore, improvements and developments are needed to address these issues. Utility Model Content

[0004] This utility model provides a tympanic membrane puncture device to solve the problem that the puncture needle is easily wobbled due to hand tremors because of the light weight of the syringe, thereby reducing the risk of ear canal damage and improving operation safety. The specific implementation method is as follows: A tympanic membrane puncture device includes an syringe with an opening and a plunger rod. The syringe forms a suction chamber communicating with the opening, and the plunger rod is configured to move within the syringe to cause the plunger rod to travel inward and draw liquid from the opening into the syringe. The needle body is used for tympanic membrane puncture. The needle body is detachably connected to the syringe. The needle body forms a flow channel, which communicates with the aspiration chamber. An air bladder is arranged near the needle tip of the needle body. The needle body has a slot, and at least a portion of the air bladder is connected to the slot. The air bladder is inflated by an inflation device, and the inflated air bladder protrudes from the outer wall of the needle body.

[0005] As a further embodiment of this utility model, at least two airbags are provided, and the two airbags are disposed opposite each other on the outer wall of the needle.

[0006] As a further embodiment of this utility model, a slot is recessed on the needle body, and at least a portion of the airbag is embedded in the slot.

[0007] As a further embodiment of this utility model, the needle body is formed with an inflation air passage, the inlet of which is connected to the airbag, and the outlet of which is connected to the inflation device.

[0008] As a further embodiment of this utility model, the needle body is provided with a connecting seat corresponding to the air outlet of the inflation passage, and the inflation device is provided with a connector corresponding to the connecting seat, and the connector and the connecting seat are sealed together.

[0009] As a further embodiment of this utility model, the connector and the connecting seat are detachably connected, and a sealing structure is provided at the connection between the connector and the connecting seat to seal the gap between the connector and the connecting seat.

[0010] As a further embodiment of this utility model, the inflation device also includes an air supply pipe and an inflation bladder. The air supply pipe is connected to a connector, and the air in the inflation bladder is supplied with gas through the air supply pipe to inflate the bladder.

[0011] As a further embodiment of this utility model, the inflatable bladder has an air inlet, and a check valve is provided near the air inlet of the inflatable bladder. The check valve is used to allow gas to be delivered unidirectionally into the inflatable bladder.

[0012] As a further embodiment of this utility model, the syringe is provided with at least one elastic buckle, which corresponds to the arrangement of the gas delivery tube. The gas delivery tube is connected to the syringe through the elastic buckle to limit the position of the gas delivery tube.

[0013] As a further embodiment of this utility model, the elastic buckle is an annular structure with an open slit, the diameter of which is smaller than the diameter of the gas supply pipe, and the gas supply pipe is elastically engaged in the elastic buckle through the open slit.

[0014] Due to the adoption of the above technical solutions, the beneficial technical effects of this utility model are: 1. This utility model provides cushioning around the needle body by expanding the air bladder, which solves the problem of the puncture needle swinging easily due to hand tremors because the syringe is light, reduces the risk of damage to the inner wall of the ear canal, and thus improves the safety of operation. 2. The gas delivery tube of this utility model is fixed to the syringe by an elastic buckle, which can stably connect the gas delivery tube to the syringe, help to limit the position of the gas delivery tube, avoid the gas delivery tube from obstructing the surgical operation, and thus improve the stability and accuracy of the operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the tympanic membrane puncture device in a specific embodiment of the present invention; Figure 2 This is a cross-sectional view of the tympanic membrane puncture device in a specific embodiment of the present invention; Figure 3 This is an enlarged view of part A in the figure of this utility model; Figure 4 This is a schematic diagram of the structure of the airbag in the inflated state in a specific embodiment of this utility model; Figure 5This is a partial structural cross-sectional view of the tympanic membrane puncture device in a specific embodiment of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Syringe, 11. Aspiration chamber, 12. Limiting ring, 13. Aspiration tube, 14. Flange, 15. Scale line, 2. Plunger rod, 21. Rod body, 22. Plunger, 3. Needle body, 31. Needle seat, 32. Inflation air path, 33. Flow channel, 34. Needle tip, 35. Slot, 36. Connecting seat, 4. One-way valve, 5. Inflation device, 51. Connector, 52. Gas supply tube, 53. Inflation bladder, 531. Air outlet, 532. Air inlet, 54. Check valve, 55. Sealing ring, 6. Protective sleeve, 7. Spring, 8. Air bladder, 9. Elastic buckle. Detailed Implementation

[0017] The specific embodiments of this utility model are described below with reference to the accompanying drawings and examples: It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0018] Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0019] Example 1, combined with Figures 1 to 5 As shown, this embodiment provides a tympanic membrane puncture device, including an injection cylinder 1 with an opening and a plunger rod 2. The injection cylinder 1 forms a suction chamber 11 communicating with the opening. The plunger rod 2 is configured to move within the injection cylinder 1, causing the plunger rod 2 to travel inward and draw liquid from the opening into the cylinder. The injection cylinder 1 is a hollow cylindrical tube, and the plunger rod 2 is slidably disposed within the injection cylinder 1. The plunger rod 2 includes a rod body 21 and a plunger 22. The plunger 22 is dynamically sealed to the wall of the injection cylinder 1. The bottom of the rod body 21 is connected to the plunger 22 to drive the plunger 22 to move. The top of the rod body 21 extends outward from the opening of the injection cylinder 1 to allow medical personnel to press the rod body 21 for operation. The injection cylinder 1 is a transparent disposable medical device, and the outer wall of the injection cylinder 1 is provided with graduation lines 15 for easy observation of the liquid aspiration inside the injection cylinder 1.

[0020] The needle body 3 is located at the bottom of the syringe 1 for tympanic membrane puncture. The needle body 3 is detachably connected to the syringe 1. The needle body 3 forms a flow channel 33, which communicates with the suction chamber 11. The needle body 3 has a needle seat 31, which can be snapped to the syringe 1 (not shown in the figure), so that the flow channel 33 communicates with the suction chamber 11, thereby enabling the needle body 3 to complete the tympanic membrane puncture operation and the operation of aspirating the accumulated fluid into the suction chamber 11.

[0021] An air bladder 8 is positioned adjacent to the needle tip 34 of the needle body 3. The needle body 3 has a slot 35, and at least a portion of the air bladder 8 is connected to the slot 35. The air bladder 8 is inflated by an inflation device 5, and the inflated air bladder 8 protrudes from the wall of the needle body 3. The slot 35 is recessed into the needle body 3, and at least a portion of the air bladder 8 is embedded in the slot 35. The slot 35 has a circular structure, and the air bladder 8 is embedded in the slot 35. The wall of the air bladder 8 is bonded to the wall of the slot 35, thereby fixing the air bladder 8 to the needle body 3. When the inflation device 5 operates, the air bladder 8 inflates, and the inflated air bladder 8 bulges out from the slot 35, causing the air bladder to protrude from the outer wall of the needle body 3, thus separating the needle body 3 from the ear canal and providing cushioning around the needle tip 34, reducing potential damage to the tissue.

[0022] In this embodiment, the syringe 1 is also provided with a suction tube 13, which is connected to the suction chamber 11. A one-way valve 4 is installed on the suction tube 13. The syringe 1 is connected to an external pipeline through the one-way valve 6 to discharge the accumulated liquid in the suction chamber 11 in one direction. The syringe 1 is also provided with a limiting ring 12. A spring 7 is provided between the limiting ring 12 and the plunger 22. The spring 7 is used to drive the plunger rod 2 to return to its original position.

[0023] In practical application, the balloon 8 is inflated, and the medical staff pushes the plunger rod 2 into the opening of the syringe 1 with their fingers, inserting the syringe 1 and the needle body 3 into the patient's ear canal. The inflated balloon 8 acts as a buffer for the needle body 3, and the tympanic membrane is punctured through the needle tip 34. The medical staff releases their fingers, and the spring 7 causes the plunger rod 2 to rebound, gradually forming a negative pressure in the suction chamber 11. The effusion in the patient's tympanic cavity is drawn into the suction chamber 11 by the negative pressure through the flow channel 33, thereby realizing the operation of tympanic membrane puncture and aspiration of effusion.

[0024] In a preferred embodiment, at least two air bladders 8 are provided, with the two air bladders 8 positioned opposite each other on the outer wall of the needle body 3. The two opposing air bladders 8 provide a more uniform buffer layer around the needle body 3, helping to protect the tympanic membrane and middle ear structures from damage. By positioning two air bladders 8 opposite each other on the outer wall of the needle body 3, the air bladders 8 can provide more stable support during puncture. When the needle body 3 swings due to the medical staff's hand tremors, the outer wall of the air bladder 8 contacts the inner wall of the ear canal, thus providing a certain buffering effect on the needle body 3 and preventing the needle tip 34 from directly contacting the inner wall of the ear canal and causing damage. In this embodiment, the number of air bladders 8 can be selected according to the actual situation.

[0025] In this embodiment, the needle body 3 forms an inflation passage 32. The inlet of the inflation passage 32 is connected to the airbag 8, and the outlet of the inflation passage 32 is connected to the inflation device 5. The inflation passage 32 is arranged along the length of the needle body 3 and includes two branches. The inlets of the two branches are inserted into the airbag 8 and sealed to the airbag 8. The outlets of the two branches are merged into one and pass through the needle seat 31 to connect with the inflation device 5, thereby realizing the purpose of the inflation device 5 to deliver gas to the airbag 8.

[0026] In this embodiment, the needle body 3 is provided with a connecting seat 36 corresponding to the outlet of the inflation air passage 32, and the inflation device 5 is provided with a connector 51 corresponding to the connecting seat 36. The connector 51 and the connecting seat 36 are sealed together. The connecting seat 36 protrudes from the outer wall of the needle seat 31 and is used to connect the connector 51, thereby providing a connection interface for the connector 51, and thus achieving the purpose of connecting the needle body 3 and the inflation device 5.

[0027] In this embodiment, the connector 51 and the connecting seat 36 are detachably connected. To prevent gas leakage when the inflation device 5 is inflated, a sealing structure is provided at the connection between the connector 51 and the connecting seat 36 to seal the gap between them. The sealing structure is a sealing ring 55, which effectively prevents gas from leaking from the gap between the connector 51 and the connecting seat 36 when the inflation device 5 is inflated, ensuring inflation efficiency and maintaining the required pressure for the airbag 8.

[0028] In this embodiment, the inflation device 5 further includes an air supply pipe 52 and an inflation bladder 53. The air supply pipe 52 is connected to the connector 51. The inflation bladder 53 draws in gas and delivers it to the air bladder 8 through the air supply pipe 52, causing the air bladder 8 to inflate. During inflation, the gas inside the inflation bladder 53 enters the inflation air passage 32 through the air supply pipe 52, and then enters the air bladder 8 through the inflation air passage 32, causing the air bladder 8 to inflate and perform its function.

[0029] In one specific embodiment, the inflatable bladder 53 has an air inlet 532, and a check valve 54 is provided adjacent to the air inlet 532. The check valve 54 is used to allow gas to be delivered unidirectionally into the inflatable bladder 53. The air inlet 532 is the gas entrance of the inflatable bladder 53. The check valve 54 is installed at the gas entrance, allowing gas to enter the inflatable bladder 53 from the outside and preventing gas from flowing out in the opposite direction. It can be a rubber valve, ball valve, or spring-loaded one-way valve, etc. The inflatable bladder 53 also has an air outlet 531, which is used to connect to the gas delivery pipe 52, thereby realizing the gas delivery function.

[0030] In one specific embodiment, the syringe 1 is provided with at least one elastic clip 9, which is arranged corresponding to the gas delivery tube 52. The gas delivery tube 52 is connected to the syringe 1 through the elastic clip 9 to limit the position of the gas delivery tube 52. Multiple elastic clips 9 can be provided according to the length of the gas delivery tube 52. By adjusting the number and position of the elastic clips 9, different tube length fixing requirements can be met, thereby increasing the stability of the gas delivery tube 52.

[0031] In this embodiment, the elastic buckle 9 is a ring-shaped structure with an open slit. The diameter of the open slit is smaller than the diameter of the gas delivery tube 52. The gas delivery tube 52 is elastically engaged in the elastic buckle 9 through the open slit. When the gas delivery tube 52 is inserted, the elastic expansion of the open slit engages the gas delivery tube 52, and the elastic buckle 9 clamps the gas delivery tube 52, thus securing it firmly to the syringe 1. This prevents the movement of the gas delivery tube 52 during operation from affecting the precision of the surgery.

[0032] In one specific embodiment, to prevent the syringe 1 from slipping out of the medical staff's hand, the top of the syringe 1 is provided with a flange 14, which protrudes outward along the radial direction of the syringe 1.

[0033] The working principle of this utility model is as follows: First, the air bladder 8 is inflated. The medical staff pushes the plunger rod 2 towards the needle body 3 with their fingers. Then, the syringe 1 is inserted into the patient's ear canal. At the same time, the inflated air bladder 8 acts as a buffer for the needle body 3. During the operation, the tympanic membrane is punctured through the needle tip 34. When the medical staff releases their fingers, the spring 7 causes the plunger rod 2 to rebound, and a negative pressure is gradually formed in the suction chamber 11. The effusion in the patient's tympanic cavity is sucked into the suction chamber 11 by the negative pressure through the flow channel 33, thereby realizing the operation of tympanic membrane puncture and effusion aspiration. If the effusion in the patient's tympanic cavity is not completely cleared, the suction tube 13 can also be connected to an external negative pressure device to aspirate the suction chamber 11 and the effusion in the patient's tympanic cavity to the outside, thereby achieving the purpose of emptying the effusion in the tympanic cavity and making the effusion aspiration more thorough.

[0034] Many other changes and modifications can be made without departing from the concept and scope of this utility model. It should be understood that this utility model is not limited to the specific embodiments, and the scope of this utility model is defined by the appended claims.

Claims

1. A tympanic membrane puncture device, characterized in that, The syringe (1) includes an open syringe and a plunger rod (2). The syringe (1) has a suction chamber (11) communicating with the opening. The plunger rod (2) is configured to move within the syringe (1) to cause the plunger rod (2) to travel inward and draw liquid from the opening into the syringe. The needle body (3) is used for tympanic membrane puncture. The needle body (3) is detachably connected to the syringe (1). The needle body (3) forms a flow channel (33), which is connected to the suction chamber (11). An air bladder (8) is arranged near the needle tip (34) of the needle body (3). The needle body (3) has a slot (35). At least a portion of the air bladder (8) is connected to the slot (35). The air bladder (8) is inflated by an inflation device (5). The inflated air bladder (8) protrudes from the outer wall of the needle body (3).

2. The tympanic membrane puncture device according to claim 1, characterized in that, At least two airbags (8) are provided, and the two airbags (8) are disposed opposite each other on the outer wall of the needle body (3).

3. The tympanic membrane puncture device according to claim 1, characterized in that, The slot (35) is recessed on the needle body (3), and at least a portion of the airbag (8) is embedded in the slot (35).

4. The tympanic membrane puncture device according to claim 1, characterized in that, The needle body (3) forms an inflation passage (32), the inlet of the inflation passage (32) is connected to the air bag (8), and the outlet of the inflation passage (32) is connected to the inflation device (5).

5. The tympanic membrane puncture device according to claim 3, characterized in that, The needle body (3) is provided with a connecting seat (36) at the outlet of the inflation air passage (32), and the inflation device (5) is provided with a connector (51) at the connecting seat (36). The connector (51) and the connecting seat (36) are sealed together.

6. The tympanic membrane puncture device according to claim 5, characterized in that, The connector (51) is detachably connected to the connecting seat (36), and a sealing structure is provided at the connection between the connector (51) and the connecting seat (36) to seal the gap between the connector (51) and the connecting seat (36).

7. The tympanic membrane puncture device according to claim 5, characterized in that, The inflation device (5) also includes an air supply pipe (52) and an inflation bag (53). The air supply pipe (52) is connected to a connector (51). The inflation bag (53) draws in gas and delivers it to the air bag (8) through the air supply pipe (52) so that the air bag (8) inflates.

8. The tympanic membrane puncture device according to claim 7, characterized in that, The inflatable bladder (53) has an air inlet (532), and the inflatable bladder (53) is provided with a check valve (54) adjacent to the air inlet (532). The check valve (54) is used to allow gas to be delivered to the inflatable bladder (53) in one direction.

9. The tympanic membrane puncture device according to claim 1, characterized in that, The syringe (1) has at least one elastic buckle (9), which is arranged corresponding to the gas delivery tube (52). The gas delivery tube (52) is connected to the syringe (1) through the elastic buckle (9) to limit the position of the gas delivery tube (52).

10. The tympanic membrane puncture device according to claim 9, characterized in that, The elastic buckle (9) is an annular structure with an open slit. The diameter of the open slit is smaller than the diameter of the gas pipe (52). The gas pipe (52) is elastically engaged in the elastic buckle (9) through the open slit.

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