Nasal introducer and surgical instrument

Abstract

The embodiment of the application provides a nasal introducer and surgical instrument, relates to the technical field of implanting instrument, and solves the problem that the front end of the eustachian balloon is easy to scratch the human body tissue in the pushing process in the prior art. The nasal introducer comprises a fixing device, a pushing tube and an elastic piece, the fixing device comprises a sliding part and an inner sleeve, the inner sleeve is provided with a containing chamber, the pushing tube is in plug-in cooperation with the fixing device, a groove is formed in the wall of the pushing tube, the sliding part is used for sliding in the groove, the elastic piece is arranged in the groove, one end of the elastic piece is connected with the bottom wall of the groove, and the other end of the elastic piece is connected with the top end of the sliding part. When the front end of the eustachian balloon in the embodiment of the application touches the human body tissue, the front end of the eustachian balloon will rebound, and the human body tissue will not be directly scratched, so that when the pre-detection is inaccurate, the human body tissue is directly scratched, the eustachian tube tissue is protected, and the risk of the operation is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of implantation device technology, and more specifically, to a nasal guide and surgical instrument. Background Technology

[0002] Eustachian tube dysfunction is a syndrome characterized by symptoms and signs related to eustachian tube dysfunction. Patients with eustachian tube dysfunction primarily present with symptoms related to pressure imbalance in the affected ear, such as a feeling of fullness in the ear, hearing loss, tinnitus, ear pain, or discomfort. In severe cases, it can also lead to otitis media, such as the currently common secretory otitis media, chronic suppurative otitis media, adhesive otitis media, postoperative recurrence of otitis media, and secretory otitis media after radiotherapy for nasopharyngeal carcinoma.

[0003] Eustachian tube balloon dilation is a newly emerging surgical method for treating eustachian tube dysfunction in recent years. It mainly dilates the cartilaginous part of the eustachian tube and has the characteristics of simple operation, safety, high efficiency and no serious complications, making it the latest choice for the treatment of eustachian tube dysfunction.

[0004] Current eustachian tube balloon dilation procedures primarily involve inserting a eustachian tube balloon catheter into the eustachian tube via a nasal guide. Specifically, the eustachian tube balloon catheter is inserted into the nasal guide through its rear end and then pushed into the eustachian tube via the guide's push tube. However, in existing techniques, the eustachian tube balloon catheter is directly inserted into the nasal guide, and the catheter moves with the push tube. If the pre-detection is inaccurate, the tip of the eustachian tube balloon can easily puncture human tissue during the push process, increasing the surgical risk.

[0005] Therefore, there is an urgent need to provide a nasal guide and surgical instrument to solve the above problems. Summary of the Invention

[0006] One object of the present invention is to provide a new technical solution for a nasal guide and surgical instruments.

[0007] According to a first aspect of the present invention, a nasal guide is provided, wherein the nasal guide comprises:

[0008] A fastener, the fastener comprising a sliding part and an inner sleeve, the inner sleeve being provided with a receiving chamber;

[0009] A push tube is inserted into the fixture, and a groove is provided on the wall of the push tube, and the sliding part is used to slide in the groove;

[0010] An elastic element is disposed within the groove, with one end of the elastic element connected to the bottom wall of the groove and the other end of the elastic element connected to the top of the sliding part.

[0011] Optionally, friction blocks are provided on the sidewall of the sliding part.

[0012] Optionally, at least two sliding parts are provided, and the two sliding parts are symmetrically arranged along the inner sleeve.

[0013] Optionally, the elastic element is a tension spring.

[0014] Optionally, the groove of the push tube is a through groove, which extends radially along the push tube.

[0015] Optionally, it also includes a seat sleeve, which is fitted onto the push tube and slides back and forth along the inner wall of the seat sleeve.

[0016] Optionally, a seat sleeve finger ring is provided on the outer wall surface of the seat sleeve tube, and a push finger ring is provided on the outer wall surface of the push tube.

[0017] Optionally, a damping groove is provided on the contact surface between the push tube and the seat tube, or a damping groove is provided on the contact surface between the seat tube and the push tube, and a damping ring is provided in the damping groove.

[0018] Optionally, a reset structure is provided on the outer wall of the seat sleeve. The reset structure includes a guide groove and a reset member. The reset member is disposed in the guide groove. A push rod limiting part is provided on the outer wall of the push tube. The push rod limiting part is disposed in the guide groove. One end of the reset member is connected to the rear bottom wall of the guide groove, and the other end of the reset member is connected to the push rod limiting part.

[0019] Optionally, the seat sleeve includes a rear end cap, and the guide groove extends into the rear end cap.

[0020] Optionally, a locking structure is provided on the outer wall of the seat sleeve tube, the locking structure passing through the seat sleeve tube and abutting against the push tube.

[0021] According to a second aspect of the invention, a surgical instrument is provided, comprising a eustachian tube balloon dilation catheter, a balloon dilation pressure pump, and a nasal guide as described in any one of the first aspects.

[0022] According to one embodiment of the present invention, a fixator, a push tube, and an elastic element are provided on the nasal guide. The fixator includes a sliding part and an inner sleeve, the inner sleeve having a receiving chamber. The push tube is inserted into the fixator, and a groove is provided on the wall of the push tube. The sliding part slides in the groove, and the elastic element is disposed in the groove. One end of the elastic element is connected to the bottom wall of the groove, and the other end of the elastic element is connected to the top end of the sliding part. This allows the rear end of the Eustachian tube balloon dilation catheter to be placed in the fixator. Then, through the initial tension provided by the elastic element disposed between the fixator and the push tube, the front end of the Eustachian tube balloon will rebound when it touches human tissue during the operation, without directly piercing the human tissue. This achieves protection of human tissue, effectively preventing direct piercing of human tissue when the pre-detection is inaccurate, protecting the tissue inside the Eustachian tube, and effectively reducing the risk of surgery.

[0023] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0025] Figure 1 This is a schematic diagram of the assembly of the fixer and the push tube in one embodiment of the present invention.

[0026] Figure 2 This is a schematic diagram of the fixture and push tube in one embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram showing the position of the friction block in one embodiment of the present invention.

[0028] Figure 4 This is a cross-sectional view of the fixator and the push tube in one embodiment of the present invention.

[0029] Figure 5 This is a schematic diagram of the fixture in one embodiment of the present invention.

[0030] Figure 6 This is a schematic diagram of the structure of a nasal guide device according to one embodiment of the present invention.

[0031] Figure 7 This is a cross-sectional view of the push rod limiting part of the nasal guide in one embodiment of the present invention.

[0032] Figure 8 This is a cross-sectional view of another state of the push rod limiting part of the nasal guide in one embodiment of the present invention.

[0033] Figure 9This is a cross-sectional view of a nasal guide device according to one embodiment of the present invention.

[0034] Figure 10 This is a schematic diagram of the structure of a surgical instrument in one embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Fixator; 11. Sliding part; 12. Friction block; 13. Inner sleeve; 14. Receptive chamber; 15. Balloon insertion end; 2. Push tube; 21. Push ring; 22. Push rod limiting part; 3. Tension spring; 4. Seat sleeve; 41. Rear end cap; 42. Locking structure; 43. Reset structure; 431. Guide groove; 432. Reset spring; 44. Seat sleeve ring; 45. Front end cap; 46. Damping groove; 5. Guide tube; 51. Guide channel; 6. Damping ring; 7. Tissue; 81. Rear end of balloon; 82. Balloon. Detailed Implementation

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0038] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0039] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0040] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0042] The technical solutions disclosed in the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0043] Firstly, referring to Figures 1 to 5This application provides a nasal guide device, including a fixator 1, a push tube 2, and an elastic element. The fixator 1 includes a sliding part 11 and an inner sleeve 13. The inner sleeve 13 is provided with a receiving chamber 14 for accommodating the rear end of the Eustachian tube balloon dilation catheter. The push tube 2 is inserted into the fixator 1, and a groove is provided on the wall of the push tube 2. The sliding part 11 is used to slide in the groove. The elastic element is disposed in the groove, with one end connected to the bottom wall of the groove and the other end connected to the top end of the sliding part 11. The fixator 1, the push tube 2, and the elastic element constitute a rebound mechanism.

[0044] In this embodiment, the push tube 2 of the nasal guide is inserted into the fixator 1, which facilitates assembly and reuse. Furthermore, it allows for easy replacement if either component is damaged, reducing operating costs. The rebound mechanism allows the rear end of the Eustachian tube balloon dilation catheter to be placed in the receiving chamber 14 of the inner sheath 13. The initial tension provided by the elastic element between the fixator 1 and the push tube 2 ensures that during surgery, when the tip of the Eustachian tube balloon touches the tissue, it rebounds without directly piercing it, thus protecting the tissue and effectively preventing direct injury in case of inaccurate pre-detection, thereby significantly reducing surgical risks.

[0045] It should be noted that, in this technical solution, the front end refers to the part where a component first enters the patient, and the rear end refers to the part of a component relative to the front end.

[0046] Optionally, such as Figure 2 or Figure 3 As shown, a friction block 12 is provided on the side wall of the sliding part 11. The friction block 12 contacts the side wall surface of the groove to prevent the fixator 1 from falling off due to force on the rear end, thus ensuring the stability of the nasal guide.

[0047] Optionally, such as Figure 4 or Figure 5 As shown, at least two sliding parts 11 are provided, and the two sliding parts 11 are symmetrically arranged along the inner sleeve, so that the rebound of the fixator 1 is more uniform and stable, thereby improving the stability of the nasal guide.

[0048] The sliding part 11 can also be set to three or four, as long as it can make the rebound of the fixer 1 more uniform. This application does not make any specific restrictions here.

[0049] Optionally, such as Figure 1 , Figure 2 or Figure 4As shown, the elastic element is a tension spring 3, which can facilitate the rebound of the eustachian tube balloon dilation catheter in the fixator 1 and improve the performance of the nasal guide.

[0050] Optionally, such as Figure 2 As shown, the groove of the push tube 2 is a through groove, which runs radially through the push tube 2. At this time, the side wall of the sliding part 11 cooperates with the side wall of the through groove to realize the rebound of the Eustachian tube balloon dilation catheter in the fixator 1. Since the through groove is easy to process and has high processing efficiency, it can effectively improve the production efficiency of the nasal guide and reduce the production cost of the nasal guide.

[0051] Optionally, such as Figure 6 As shown in the embodiment of this application, a nasal guide also includes a seat tube 4, which is sleeved on the push tube 2. The seat tube 4 includes a rear end cap 41, and the seat tube 4 is sleeved and connected to the push tube 2 through the rear end cap 41, so that a part of the push tube 2 is located inside the seat tube 4, thereby allowing the push tube 2 to slide back and forth along the inner wall of the seat tube 4.

[0052] Optionally, such as Figure 6 or Figure 9 As shown, a seat sleeve ring 44 is provided on the outer wall surface of the seat sleeve tube 4, and a push ring 21 is provided on the outer wall surface of the push tube 2.

[0053] Optionally, a damping groove is provided on the contact surface between the push tube 2 and the seat sleeve tube 4, or as follows: Figure 7 As shown, a damping groove 46 is provided on the contact surface between the seat tube 4 and the push tube 2, and a damping ring 6 is provided in the damping groove, so that the quantitative advancement of the nasal guide can be controlled. That is, when the Eustachian tube balloon dilation catheter in the fixator 1 is advanced to the front end, the friction between the push tube 2 and the seat tube 4 can be effectively increased, thereby braking the rebound stroke and preventing the push tube 2 from being pushed too fast and puncturing the tissue 7 in the Eustachian tube, further reducing the risk of surgery.

[0054] Optionally, such as Figure 6 , Figure 7 or Figure 8As shown, a reset structure 43 is provided on the outer wall of the seat sleeve tube 4. The reset structure 43 includes a guide groove 431 and a reset member. The reset member is disposed within the guide groove 431. A push rod limiting part 22 is provided on the outer wall of the push tube 2, and the push rod limiting part 22 is disposed within the guide groove 431. One end of the reset member is connected to the rear bottom wall of the guide groove 431, and the other end of the reset member is connected to the push rod limiting part 22. The push rod limiting part 22 is located within the guide groove 431. By setting the dimensions of the guide groove 431, the pushing stroke of the push tube 2 can be controlled. The pushing direction of the push tube 2 is C.

[0055] The reset element is a reset spring 432, which allows for more precise control of the quantitative advancement of the nasal guide when the balloon dilation catheter in the eustachian tube of the fixator 1 is advanced towards the front end. This prevents the push tube 2 from being pushed too quickly and puncturing the tissue inside the eustachian tube, further reducing the risk of surgery. At the same time, compared with the traditional locking nut structure, the nasal guide in this embodiment no longer requires one hand to operate the push tube 2 during surgery. The other hand locks the push tube 2 through the locking nut structure, thereby enabling one-handed operation during surgery, making the nasal guide in this embodiment more convenient to operate and use.

[0056] Optionally, this application can make the pushing speed of the push tube 2 more linear during the operation by working together with the damping ring 6, the reset spring 432 and the above-mentioned rebound mechanism, so as to make the stability and reliability of the operation higher, further improve the safety and accuracy of the operation, and improve the efficiency of the operation.

[0057] Optionally, such as Figure 6 , Figure 7 or Figure 8 As shown, the guide groove 431 extends into the rear end cap 41, so that the return spring 432 located in the guide groove 431 can be limited by the rear end cap 41, which improves the stability of the return spring 432 and eliminates the need for an additional fixing structure for the return spring 432, making the overall structure simpler.

[0058] Optionally, such as Figure 9 As shown, a locking structure 42 is provided on the outer wall of the seat sleeve tube 4. The locking structure 42 passes through the seat sleeve tube 4 and abuts against the push tube 2 to lock the position of the push tube 2.

[0059] Optionally, such as Figure 9As shown in the illustration, the nasal guide provided in this application embodiment further includes a guide tube 5, which has a guide channel 51 for accommodating the tip of the Eustachian tube balloon dilation catheter. The seat tube 4 also includes a front cap 45, through which the guide tube 5 is connected to the seat tube 4, allowing the direction of the tip of the guide tube 5 to be adjusted via the front cap 45.

[0060] Secondly, in one embodiment, a surgical instrument is provided, comprising a Eustachian tube balloon dilation catheter, a balloon dilation pressure pump, and a nasal guide as mentioned in the first aspect. Figure 10 As shown, the Eustachian tube balloon dilation catheter includes a balloon rear end 81 and a balloon 82. The fixator 1 also includes a balloon insertion end 15. The balloon rear end 81 is inserted into the balloon insertion end 15. The balloon dilation pressure pump (not shown in the figure) is inserted into the balloon rear end 81. The balloon 82 protrudes from the guide tube 5 under the push of the push tube 2.

[0061] Specifically, during the surgery, the front end of the guide tube 5 of the nasal guide is first inserted into the opening of the Eustachian tube. Then, the balloon 82 is placed into the Eustachian tube through the push tube 2. Water is then injected into the balloon 82 to pressurize it. When the balloon 82 reaches a certain pressure, the pressure is maintained for two minutes. Then, the pressure is released, the Eustachian tube balloon dilation catheter is removed, and the surgery is completed.

[0062] Therefore, by setting up the aforementioned rebound mechanism, this application allows the rear end of the Eustachian tube balloon dilation catheter to be placed in the fixator 1. Then, through the initial tension provided by the elastic element set between the fixator 1 and the push tube 2, the front end of the Eustachian tube balloon will rebound when it touches human tissue during the operation, without directly piercing the human tissue. This achieves the protection of human tissue, effectively preventing direct piercing of human tissue when the pre-detection is inaccurate, protecting the tissue 7 inside the Eustachian tube, and effectively reducing the risk of surgery.

[0063] It should be noted that the rebound direction of the eustachian tube balloon dilation catheter is A, and the advancement direction of the tip of the eustachian tube balloon dilation catheter is B.

[0064] The above embodiments mainly describe the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. For the sake of brevity, they will not be elaborated here.

[0065] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A nasal guide device, characterized in that, include: Fixture (1), the fixture (1) includes a sliding part (11) and an inner sleeve (13), a friction block (12) is provided on the side wall of the sliding part (11), and a receiving chamber (14) is provided in the inner sleeve (13); at least two sliding parts (11) are provided, and the two sliding parts (11) are symmetrically arranged along the inner sleeve (13); Push tube (2), the push tube (2) is inserted into the fixture (1), the wall of the push tube (2) is provided with a groove, the groove of the push tube (2) is a through groove, the through groove is radially through the push tube (2), and the sliding part (11) is used to slide in the groove; The elastic element is a tension spring (3), which is disposed in the groove. One end of the elastic element is connected to the bottom wall of the groove, and the other end of the elastic element is connected to the top of the sliding part (11).

2. The nasal guide device according to claim 1, characterized in that, It also includes a seat sleeve tube (4), which is sleeved on the push tube (2), and the push tube (2) slides back and forth along the inner wall of the seat sleeve tube (4).

3. The nasal guide device according to claim 2, characterized in that, A seat sleeve ring (44) is provided on the outer wall surface of the seat sleeve tube (4), and a push ring (21) is provided on the outer wall surface of the push tube (2).

4. The nasal guide device according to claim 2 or 3, characterized in that, A damping groove is provided on the contact surface between the push tube (2) and the seat tube (4), or a damping groove (46) is provided on the contact surface between the seat tube (4) and the push tube (2), and a damping ring (6) is provided in the damping groove.

5. The nasal guide device according to claim 2 or 3, characterized in that, A reset structure (43) is provided on the outer wall of the seat sleeve (4). The reset structure (43) includes a guide groove (431) and a reset member. The reset member is disposed in the guide groove (431). A push rod limiting part (22) is provided on the outer wall of the push tube (2). The push rod limiting part (22) is disposed in the guide groove (431). One end of the reset member is connected to the rear bottom wall of the guide groove (431), and the other end of the reset member is connected to the push rod limiting part (22).

6. The nasal guide device according to claim 5, characterized in that, The seat sleeve (4) includes a rear end cap (41), and the guide groove (431) extends into the rear end cap (41).

7. The nasal guide device according to claim 2 or 3, characterized in that, A locking structure (42) is provided on the outer wall of the seat sleeve (4), the locking structure (42) passes through the seat sleeve (4) and abuts against the push tube (2).

8. A surgical instrument, characterized in that, Includes a eustachian tube balloon dilation catheter, a balloon dilation pressure pump, and a nasal guide as described in any one of claims 1-7.

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