Novel nasal cavity expansion device

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a novel nasal cavity dilating device, which comprises a dilator and a handle detachably connected with the dilator, a quick release structure is arranged at the joint of the dilator and the handle, the dilator comprises a first blade and a second blade movably connected with the first blade, and the first blade is connected with the second blade. According to the nasal cavity dilator, the handle and the dilator can be separated, the trouble that the handle needs to be held and fixed by a single person in an operation can be avoided, and a doctor can be helped to better observe and operate tissues and organs in a nasal cavity.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and specifically relates to a new type of nasal cavity dilation device. Background Technology

[0002] Transnasal skull base surgery is usually performed with an endoscope and a microscope, with the endoscope being the main development at present. The difficulty of this method is that the operating space is relatively small. During the operation, a nasal dilator can assist the surgical operation, dilate the narrow passage, expose the tissues and structures in the nasal cavity, make the surgical field clearer, and facilitate the doctor to perform the operation. This means that the operating space is limited, requiring skilled doctors to perform the operation with two people and three hands, preferably two people and four hands. If you are not very skilled, the instruments may "fight" with each other in a small space, which may cause damage to intracranial blood vessels and nerves. This is the biggest difficulty.

[0003] There are two types of nasal dilators on the market based on the usage scenario. One is similar to a surgical forceps structure, with the two petals of the dilator connected by an axis. The size of the dilator opening is controlled by the strength of the human hand holding the handle, and it closes naturally after the handle is released. It is mostly used to diagnose diseases and examine tissue lesions in the nasal cavity. The other type can fix the size of the dilator opening. There is an adjustment screw between the two handles of the dilator. The size of the dilator opening is adjusted by screwing the screw in and out. It is mostly used for transnasal brain surgery, and instruments pass through it during surgery. Both types of nasal dilators have long handles. Even if the dilator is inserted into the nasal cavity, the overall center of gravity is biased toward the outside of the nasal cavity. After insertion, it is unstable and requires manual support of the handle to fix it, which is inconvenient to use. Contents of utility model

[0004] Aiming at the above-mentioned deficiencies existing in the prior art, the utility model provides a new nasal cavity expansion device to solve the above-mentioned existing problems.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A novel nasal cavity dilation device comprises a dilator and a handle detachably connected to the dilator, wherein a quick-release structure is provided at the connection between the dilator and the handle, the dilator comprises a first blade and a second blade movably connected to the first blade, and a locking structure is provided at the connection between the first blade and the second blade.

[0007] Furthermore, the locking structure includes a boss arranged on the first blade, a jaw arranged on the second blade, and a screw rod connected with the boss and the jaw rod, a first through hole is provided on the boss, a second through hole and a threaded hole are provided at the upper and lower parts of the jaw rod, the screw rod passes through the second through hole and the first through hole in sequence, and is threadedly connected with the threaded hole.

[0008] Furthermore, the locking structure includes a first ratchet tooth arranged on the first blade, a key fixedly arranged above the ratchet tooth, a spring seat arranged on the second blade, and a second ratchet tooth, the second ratchet tooth has a hole, a spring is sleeved on the spring seat, the first ratchet tooth is pressed on the spring, the key passes through the hole, and the first ratchet tooth is meshed and connected with the second ratchet tooth.

[0009] Furthermore, the quick-release structure includes a clamping position provided on the expander and a buckle provided on the handle, and the clamping position is engaged with the buckle.

[0010] Furthermore, the quick-release structure includes a guide groove arranged on the expander and a slide rail provided on the handle, and the guide groove is slidably engaged with the slide rail.

[0011] Furthermore, the handle is scissor-shaped.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model consists of a handle and a dilator, and the handle and the dilator are separable. After the dilator is placed in the nasal passage and dilated to a suitable size, the opening is locked and the handle is released, leaving the dilator in the nasal cavity to provide continuous support for the nasal cavity. This solution can avoid the trouble of requiring a single person to hold and fix the handle during surgery, can help doctors better observe and operate tissues and organs in the nasal cavity, and is faster and more labor-saving than adjusting the opening size with screws, simplifying surgical operations. Brief Description of the Figures

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a first embodiment of a novel nasal cavity expansion device of the utility model;

[0015] Figure 2 It is a three-dimensional structural diagram of the dilator in the first embodiment of a novel nasal dilation device of the utility model (state one);

[0016] Figure 3 For Figure 2 Local enlarged view of point A in the middle;

[0017] Figure 4 It is a three-dimensional structural diagram of the dilator in the first embodiment of a novel nasal dilation device of the utility model (state 2);

[0018] Figure 5 This is a schematic diagram of the locking structure in Embodiment 1 of a novel nasal cavity expansion device of the present utility model (locking structure 1);

[0019] Figure 6 This is a schematic diagram of the use state of the locking structure 1 in the first embodiment of the novel nasal cavity expansion device of the utility model (state 1);

[0020] Figure 7 It is a schematic diagram of the use state of the locking structure 1 in the first embodiment of the novel nasal cavity expansion device of the utility model (state 2);

[0021] Figure 8 This is a schematic diagram of the locking structure in Embodiment 1 of a novel nasal cavity expansion device of the present utility model (locking structure 2);

[0022] Figure 9 This is a schematic diagram of the use state of the locking structure 2 in the first embodiment of the utility model of a novel nasal cavity expansion device (state 1);

[0023] Figure 10 This is a schematic diagram of the use state of the locking structure 2 in the first embodiment of the utility model of a novel nasal cavity expansion device (state 2);

[0024] Figure 11 This is a schematic diagram of the use state of the locking structure 2 in the first embodiment of the novel nasal cavity expansion device of the utility model (state 3);

[0025] Figure 12 This is a schematic diagram of the handle structure in Example 1 of a novel nasal cavity dilation device of the utility model;

[0026] Figure 13 This is a schematic diagram of the quick-release structure in Embodiment 1 of a novel nasal cavity expansion device of the present utility model (quick-release structure 1);

[0027] Figure 14 This is a schematic diagram of the quick-release structure in Embodiment 1 of a novel nasal cavity expansion device of the utility model (quick-release structure 2);

[0028] Figure 15 It is a schematic diagram of the use state of the first embodiment of the novel nasal cavity expansion device of the utility model;

[0029] Figure 16 This is a schematic diagram of the structure of a second embodiment of a novel nasal cavity expansion device of the utility model;

[0030] Figure 17 For Figure 16 Local enlarged view of point B in the middle;

[0031] Figure 18 For Figure 16 A partial enlarged view of point C in the middle. Specific implementation method

[0032] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0033] The drawings are only for illustrative purposes and are schematic diagrams rather than physical drawings, and should not be construed as limiting the present patent. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] In the description of this utility model, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances. Example 1

[0036] If Figure 1 The figure shows a three-dimensional structural diagram of a novel nasal dilation device, which is divided into two components: dilator 1 and handle 2.

[0037] If Figure 2 Shown is the structural diagram of the expander 1, which is made of stainless steel, a commonly used medical metal, and is composed of two thin-piece structures. The ends of the blades 11 and 12 are designed with clamping positions 14 and 15 for assembling the handle 2; Figure 5 、 Figure 8There are two locking structures at the connection of the two leaves. The first locking structure: a jaw structure at one end and a boss structure at the other end. The through hole 16 is coaxial with the threaded hole 17. During assembly, the through hole 18 is clamped between the two holes 16 and 17. The screw 13 passes through the through holes 16 and 18 in sequence, and then screws into the threaded hole 17. When the screw 13 is not tightened, the jaw 20 and the boss 19 are in clearance, and the two leaves rotate and expand with the screw 13 as the axis. When the screw 13 is tightened, the jaw 20 clamps the boss 19, and the positions of the two leaves are relatively fixed and cannot rotate; the second locking structure: the height of the key 30 is less than the distance between the ratchet 26 and the spring seat 28, and it is installed in the alignment hole 31, so that the ratchet 26 and the ratchet 27 are meshed, and then the spring 29 is compressed and installed into the spring seat 28. The ratchet separation and meshing realizes one-way expansion and automatic locking.

[0038] If Figure 12 shows the structure of the handle 2, which is similar to a pair of scissors. The two branches are X-shaped and connected together by an axis 23. The ends are designed with buckles 24 and buckles 25, which are respectively connected to the clamping positions 14 and 15 on the expander 1, as shown in Figure 13 、 Figure 14 Two examples of connection methods are shown. The cross section of the clamping position 14 is a trapezoidal structure that is narrow at the top and wide at the bottom. The buckle 25 is clamped on the clamping position 14 through elastic deformation, or is connected through a convenient and easily detachable buckle.

[0039] During use, if Figure 15 First, connect the dilator 1 to the handle 2. The screw 13 is in a loose state. The two blades can be rotated at will. Hold the handle tightly to clamp the two blades together and insert them into the nasal cavity through the nostrils. After the dilator 1 completely enters the nasal cavity, open the handle to expand the blades 11 and 12 to fit the nasal cavity. Tighten the screw 13 to fix the blades, release the handle, and leave the dilator 1 in the nasal cavity for continuous support.

[0040] The utility model proposes a new type of nasal dilator with a detachable handle and rapid dilation. Compared with other dilators that are fixed by hand, the fixation becomes unstable due to hand fatigue as the operation time increases. This solution separates the handle after insertion, and the entire center of gravity of the dilator is in the nasal cavity. At the same time, it is mechanically locked after dilator is expanded to the expected size. After the handle is released, it still continues to support the nasal cavity. The mechanical fixed support is more stable, avoiding the handle from interfering with other operations of the doctor during the operation. Example 2

[0041] If Figure 16 As shown in the figure, based on the first embodiment, the positioning design is cancelled, a guide groove 33 is designed at the end of the expander 1, and the head end of the handle 2 is designed as a hollow slide rail 32, and the slide rail 32 is assembled along the guide groove 33. This structure makes the connection between the handle and the expander wider, the contact area larger, and the slide rail and the guide groove are not easy to fall off.

[0042] ​​The difference between this embodiment and the above-mentioned embodiment 1 is that the single-point clamping connection between the expander 1 and the handle 2 is changed to a surface-to-surface contact assembly, which has strong anti-deformation ability. Compared with the example, this solution can make the two parts fit more firmly and reliably, avoid the risk of accidental fall-off of the handle during the insertion process during surgery, and improve the safety of surgery.

[0043] The above is only an embodiment of the utility model. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for technicians in this field, without departing from the structure of the utility model, they can also make several deformations and improvements, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A novel nasal dilation device, characterized in that: It comprises an expander and a handle detachably connected to the expander, wherein a quick-release structure is arranged at the connection between the expander and the handle, the expander comprises a first blade and a second blade movably connected to the first blade, and a locking structure is arranged at the connection between the first blade and the second blade.

2. A novel nasal dilation device as claimed in claim 1, characterized in that: The locking structure includes a boss arranged on the first blade, a jaw arranged on the second blade, and a screw connected to the boss and the jaw. A first through hole is opened on the boss, and a second through hole and a threaded hole are opened correspondingly at the upper and lower parts of the jaw. The screw passes through the second through hole and the first through hole in sequence, and is threadedly connected to the threaded hole.

3. A novel nasal dilation device as claimed in claim 1, characterized in that: The locking structure includes a first ratchet tooth arranged on the first blade, a key fixedly arranged above the ratchet tooth, a spring seat arranged on the second blade, and a second ratchet tooth, the second ratchet tooth is provided with a hole, a spring is sleeved on the spring seat, the first ratchet tooth is pressed on the spring, the key passes through the hole, and the first ratchet tooth is meshed and connected with the second ratchet tooth.

4. A novel nasal dilation device as claimed in claim 1, characterized in that: The quick-release structure comprises a clamping position arranged on the expander and a buckle arranged on the handle, and the clamping position is engaged with the buckle.

5. A novel nasal dilation device as claimed in claim 1, characterized in that: The quick-release structure comprises a guide groove arranged on the expander and a slide rail opened on the handle, and the guide groove is slidably engaged with the slide rail.

6. A novel nasal dilation device as claimed in claim 1, characterized in that: The handle is in the shape of scissors.

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