Maxillary sinus external lifting instrument
By designing an external maxillary sinus lift instrument, and using instruments No. 1 and No. 2 to achieve efficient dissection of the maxillary sinus mucosa, the problems of frequent tool replacement and high cost of existing instruments are solved, the surgical procedure is simplified, and efficiency and success rate are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JINGYAER TECHNOLOGY CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-19
AI Technical Summary
Existing maxillary sinus lateral wall lifting tools require frequent replacement, increasing surgical time and cleaning and disinfection workload, and the large number of instruments leads to high medical costs.
An external maxillary sinus lift instrument was designed, including instrument number one and instrument number two. The instrument number one and instrument number two are used to perform primary and supplementary dissection of the maxillary sinus mucosa, respectively, reducing the number of instruments. The instrument number two is reduced. The instrument number two is made of shape memory alloy material and can be bent at the required angle, which simplifies the operation.
By reducing the number of instruments and improving operational efficiency, the surgical procedure was simplified, the operation time and cleaning and disinfection workload were reduced, medical costs were lowered, and the success rate and efficiency of maxillary sinus mucosal lifting were improved.
Smart Images
Figure CN224251525U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a maxillary sinus lift device. Background Technology
[0002] When a maxillary posterior tooth is missing, the floor of the maxillary sinus will descend to the original position of the missing tooth root. If an implant is placed at this time, it may penetrate the maxillary sinus wall. In order to implant the implant, it is often necessary to transplant some synthetic bone substitutes to lift it to its original position. This can ensure that the implant is in the maxilla. This surgical procedure is called maxillary sinus lift.
[0003] Maxillary sinus floor elevation includes two methods: intra-sinusial elevation via the alveolar ridge crest and lateral wall elevation. Lateral wall elevation is generally suitable for cases where the alveolar ridge crest bone height is less than 5 mm. Maxillary sinus bone grafting via lateral wall elevation is a clinically proven and highly effective solution for insufficient bone volume in the posterior region.
[0004] The existing maxillary sinus lateral wall lifting tools are basically the Dentium maxillary sinus lateral wall lifting mucosal dissectors from South Korea, totaling four instruments, each equipped with a dome-shaped sinus spatula of different shapes, used for gradually dissecting and lifting the left and right maxillary sinus mucosa. This set of instruments has four dissectors, which increases surgical time due to frequent changes, and also results in a large workload for cleaning and sterilization after the operation due to the large number of instruments used, leading to high medical costs. Utility Model Content
[0005] To address the shortcomings of the existing technology, this utility model provides a simple, flexible, and effective maxillary sinus lift device.
[0006] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:
[0007] An external maxillary sinus lift device includes a first device, which includes a first handle, a first connecting part on the left side of the first handle, and a second connecting part on the right side. The first connecting part connects to a first working head, and the second connecting part connects to a second working head. The first working head is bird-head shaped and includes a head elevation section and a mouth elevation section that are smoothly connected in sequence. One end of the head elevation section is coaxially arranged with the first connecting part, and the other end of the head elevation section is located above and to the left of the first connecting part. The mouth elevation section is located below and to the left of the head elevation section, and the end of the mouth elevation section is inwardly folded. The second working head is wavy.
[0008] Furthermore, the head of the first working head has four raised sections, namely the first section, the second section, the third section, and the fourth section. The first section is coaxially arranged with the first connecting part and extends away from the first connecting part. The second section deflects to the upper left of the first section, the third section deflects to the left of the second section, and the fourth section deflects to the lower left of the third section. Each section is smoothly connected. The mouth raised section includes a fifth section and a sixth section that are smoothly connected. The fifth section deflects to the lower left of the fourth section, and the sixth section deflects to the lower left of the fifth section.
[0009] Furthermore, the angle α between the sixth segment and the central axis of the first handle is 0 to 60 degrees.
[0010] Furthermore, the second working head includes a seventh, eighth, ninth, and tenth segment that are smoothly connected. The seventh segment is coaxially arranged with the second connecting part and extends away from the second connecting part. The eighth segment deflects to the lower right of the seventh segment, and the ninth segment deflects to the upper right of the eighth segment. The end of the ninth segment is located on the extension line of the central axis. The tenth segment deflects to the lower right of the ninth segment. The eighth and ninth segments form a small wave segment with a span of 8-9 mm and a wave height of 2-4 mm. The ninth and tenth segments form a large wave segment with a span of 15-18 mm and a wave height of 10 mm.
[0011] Furthermore, the angle β between the tenth segment of the second working head and the central axis of the first handle is 0 to 80 degrees.
[0012] Furthermore, the angle between the end of the first working head and the central axis of the first handle is the same as the angle between the end of the second working head and the central axis of the first handle.
[0013] Furthermore, it also includes a second instrument, which includes a second handle, a third connecting part on the left side and a fourth connecting part on the right side of the second handle, the third connecting part being connected to a third working head and the fourth connecting part being connected to a fourth working head; the third and fourth working heads are in the shape of a question mark and are deflected toward the second handle, and the third and fourth working heads are deflected toward the same side of the second handle.
[0014] Furthermore, the third working head includes a first bending section, a second bending section, and a third bending section that are connected in a smooth, sequential manner. The first bending section is coaxially arranged with the third connecting part. The second bending section deflects to the upper left of the first bending section, and the third bending section bends to the lower right of the second bending section. The angle α between the second bending section and the central axis of the second handle is 10 to 40°. The angle b between the third bending section and the central axis of the second handle is 110 to 170°.
[0015] Furthermore, the fourth working head is symmetrically arranged with respect to the third working head. The fourth working head includes a fourth bending segment, a fifth bending segment, and a sixth bending segment that are connected in a smooth, sequential manner. The fourth bending segment is coaxial with the fourth connecting part. The fifth bending segment deflects to the upper right of the fourth bending segment, and the sixth bending segment bends to the lower left of the fifth bending segment. The angle α between the fifth bending segment and the central axis of the second handle is 10° to 40°; the angle b between the sixth bending segment and the central axis of the second handle is 110° to 170°.
[0016] Furthermore, the No. 1 working head, No. 2 working head, No. 3 working head, and No. 4 working head are made of shape memory alloy.
[0017] The beneficial effects of this utility model are as follows:
[0018] This invention relates to a maxillary sinus external lifting instrument, which is used for mechanical dissection when lifting and stripping the maxillary sinus mucosa on the lateral walls of the maxillary sinus. The first working head of the instrument is used to perform primary and extended dissection of the four walls of the maxillary sinus mucosa, and the second working head is used to perform supplementary dissection of the four walls of the maxillary sinus mucosa. Only one instrument is needed to complete the maxillary sinus mucosa lifting and stripping, which can reduce the number of dissection tools required for lifting the lateral walls of the maxillary sinus.
[0019] The maxillary sinus external lifting instrument of this invention, the second instrument is used to perform supplementary and fine dissection of the local part of the maxillary sinus lateral wall, thereby improving the efficiency and success rate of lifting the maxillary sinus mucosa.
[0020] This invention has a simple structure and is flexible in use. It can effectively solve the problem of maxillary sinus mucosal dissection, simplify the difficulty of surgery to increase bone height and meet the needs of dental implantation. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the structure of the first device in this embodiment of the present invention;
[0023] Figure 2 yes Figure 1 Enlarged view of point A within the dashed box;
[0024] Figure 3 yes Figure 1 Enlarged view of point B within the dashed box;
[0025] Figure 4 This is a front view schematic diagram of the second device in the embodiment of this utility model;
[0026] Figure 5 yes Figure 4 Top view;
[0027] Figure 6 yes Figure 4 Enlarged view of point C within the dashed box;
[0028] Figure 7 yes Figure 4 Enlarged view of point D within the dashed box.
[0029] Reference numerals: 1-First handle, 2-First connecting part, 3-Second connecting part, 4-Working head 1, 5-Working head 2, 6-Second handle, 7-Third connecting part, 8-Fourth connecting part, 9-Working head 3, 10-Working head 4, 41-First segment, 42-Second segment, 43-Third segment, 44-Fourth segment, 45-Fifth segment, 46-Sixth segment, 51-Seventh segment, 52-Eighth segment, 53-Ninth segment, 54-Tenth segment, 91-First bending segment, 92-Second bending segment, 93-Third bending segment, 101-Fourth bending segment, 102-Fifth bending segment, 103-Sixth bending segment. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0031] An external maxillary sinus lift device, such as Figures 1-3As shown, the device includes a first instrument, which includes a first handle 1. A first connecting part 2 is provided on the left side of the first handle 1, and a second connecting part 3 is provided on the right side. The first connecting part 2 is connected to a first working head 4, and the second connecting part 3 is connected to a second working head 5. The first working head 4 is shaped like a bird's head and includes a head ridge section and a beak ridge section that are smoothly connected in sequence. One end of the head ridge section is coaxially arranged with the first connecting part 2, and the other end of the head ridge section is located at the upper left of the first connecting part 2. The beak ridge section is located at the lower left of the head ridge section, and the end of the beak ridge section is inwardly folded. The second working head 5 is wavy.
[0032] Specifically, the head of the first working head 4 has four raised sections: section 41, section 42, section 43, and section 44. Section 41 is coaxial with the first connecting part 2 and extends away from the first connecting part 2. Section 42 is deflected to the upper left of section 41, section 43 is deflected to the left of section 42, and section 44 is deflected to the lower left of section 43. Each section is smoothly connected. The mouth raised section includes two smoothly connected sections: section 45 and section 46. Section 45 is deflected to the lower left of section 44, and section 46 is deflected to the lower left of section 45. The angle α between section 46 and the central axis of the first handle 1 is 0 to 60 degrees. The overall length of the first working head 4 is 25 mm, with the horizontal span of the head raised section being 12 to 15 mm and the raised height being 6 to 8 mm. Preferably, the end of the sixth segment 46 can be processed into a cylindrical, sheet-like, or triangular sheet-like geometric shape that is close to the local sinus floor. The first working head 4 mainly performs primary and extended peeling of the four walls of the maxillary sinus mucosa, with a peeling depth of about 25 mm.
[0033] The second working head 5 includes a seventh segment 51, an eighth segment 52, a ninth segment 53, and a tenth segment 54 that are smoothly connected. The seventh segment 51 is coaxially arranged with the second connecting part 3 and extends away from the second connecting part 3. The eighth segment 52 deflects to the lower right of the seventh segment 51, and the ninth segment 53 deflects to the upper right of the eighth segment 52. The end of the ninth segment is located on the extension line of the central axis. The tenth segment 54 deflects to the lower right of the ninth segment 53. The eighth segment 52 and the ninth segment 53 form a small wave segment, and the lower half of the ninth segment 53 and the tenth segment 54 form a large wave segment. The angle β between the tenth segment 54 of the second working head 5 and the central axis of the first handle 1 is 0–80 degrees. The overall length of the second working head 5 is 25 mm. The span of the small wave segment is 8–9 mm, and the wave height is 2–4 mm. The span of the large wave segment is 15–18 mm, and the wave height is 10 mm. Preferably, the span of the small wave segment is 9 mm, and the wave height is 3.5 mm. The span of the large wave segment is 17 mm, and the height is 10 mm. The second working head 5 mainly performs supplementary dissection of the maxillary sinus wall mucosa. The dissection range is smaller than that of the first working head, approximately 13 mm.
[0034] Preferably, the angle between the end of the first working head 4 and the central axis of the first handle is the same as the angle between the end of the second working head 5 and the central axis of the first handle. Preferably, the angle between the end of the first working head 4 and the central axis of the first handle is 30°, and the angle between the end of the second working head 5 and the central axis of the first handle is 30°.
[0035] Furthermore, such as Figure 4 , Figure 5 As shown, it also includes a second instrument, which includes a second handle 6. The second handle 6 has a third connecting part 7 on its left side and a fourth connecting part 8 on its right side. The third connecting part 7 is connected to a third working head 9, and the fourth connecting part 8 is connected to a fourth working head 10. The third working head 9 and the fourth working head 10 are in the shape of a question mark and are deflected toward the second handle 6. The third working head 9 and the fourth working head 10 are deflected toward the same side of the second handle 6.
[0036] The third working head 9 includes a first bending section 91, a second bending section 92, and a third bending section 93 connected in a smooth, sequential manner. The first bending section 91 is coaxially arranged with the third connecting part 7. The second bending section 92 is deflected to the upper left of the first bending section 91, and the third bending section 93 is bent to the lower left of the second bending section 92. Preferably, the angle α between the second bending section 92 and the central axis of the second handle 6 is 10-40°, preferably 20°. The angle b between the third bending section 93 and the central axis of the second handle 6 is 110-170°, preferably 135°. Preferably, the head span formed by the second bending section 92 and the third bending section 93 is 10-15mm, and the height is 10-15mm. In one specific embodiment, the head span formed by the second bending section 92 and the third bending section 93 is 12mm, and the height is 12mm.
[0037] Preferably, the fourth working head 10 is symmetrically arranged with respect to the third working head 9. The fourth working head 10 includes a fourth bending segment 101, a fifth bending segment 102, and a sixth bending segment 103 that are connected in a smooth, sequential manner. The fourth bending segment 101 is coaxially arranged with the fourth connecting part 8. The fifth bending segment 102 is deflected to the upper right of the fourth bending segment 101, and the sixth bending segment 103 is bent to the lower right of the fifth bending segment 102. The angle α between the fifth bending segment 102 and the central axis of the second handle 6 is 10° to 40°, preferably 20°. The angle b between the sixth bending segment 103 and the central axis of the second handle 6 is 110° to 170°, preferably 135°. Preferably, the head span formed by the fifth bending segment 102 and the sixth bending segment 103 is 10-15mm and the height is 10-15mm. In a specific embodiment, the head span formed by the fifth bending segment 102 and the sixth bending segment 1033 is 12mm and the height is 12mm.
[0038] The No. 3 working head 9 is mainly used for the dissection of the mesial half (mesial wall, mesial superior wall, mesial inferior wall) of the right maxillary sinus mucosa and the distal half (distal wall, distal superior wall, distal inferior wall) of the left maxillary sinus mucosa. The No. 4 working head 10 is mainly used for the dissection of the mesial half (mesial wall, mesial superior wall, mesial inferior wall) of the left maxillary sinus mucosa and the distal half (distal wall, distal superior wall, distal inferior wall) of the right maxillary sinus mucosa.
[0039] The first handle 1 is integrally formed with the first connecting part 2 and the second connecting part 3, and the second handle 6 is integrally formed with the third connecting part 7 and the fourth connecting part 8. The first handle 1 and the second handle 6 are cylindrical with anti-slip grooves. Preferably, the diameter of the first handle 1 and the second handle 6 is 10-12mm and the length is 10-15cm. The first connecting part 2, the second connecting part 3, the third connecting part 7 and the fourth connecting part 8 are conical, and the diameter decreases from the end closer to the handle to the end farther away from the handle.
[0040] Preferably, the first handle, second handle, first connecting part, second connecting part, third connecting part, and fourth connecting part are made of pure titanium or titanium alloy. The first, second, third, and fourth working heads are made of shape memory alloy, allowing for customized bending of the working head tip angle through heating. Each working head is detachably connected to its corresponding connecting part, for example, via threaded or plug-in connections, enabling the matching of multiple working heads with the handle and facilitating precise and minimally invasive surgery. The tips of each working head can be made into blunt, spoon-shaped, round, triangular, or curved plate-like structures to better adapt to the requirements of maxillary sinus dissection, and improvements can be made based on these designs.
[0041] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.
Claims
1. A maxillary sinus floor lifting instrument, characterized by: The device includes a first handle (1), a first connecting part (2) on the left side of the first handle (1), a second connecting part (3) on the right side, the first connecting part (2) connecting to a first working head (4), and the second connecting part (3) connecting to a second working head (5). The first working head (4) is shaped like a bird's head and includes a head ridge section and a beak ridge section that are connected in a smooth transition. One end of the head ridge section is coaxially arranged with the first connecting part (2), the other end of the head ridge section is located to the upper left of the first connecting part (2), and the beak ridge section is located to the lower left of the head ridge section. The end of the beak ridge section is inwardly folded. The second working head (5) is wavy.
2. The maxillary sinus floor lifting instrument according to claim 1, characterized in that: The head of the No. 1 working head (4) has four raised sections, namely the first section (41), the second section (42), the third section (43), and the fourth section (44). The first section (41) is coaxially arranged with the first connecting part (2) and extends away from the first connecting part (2). The second section (42) deflects to the upper left of the first section (41), the third section (43) deflects to the left of the second section (42), and the fourth section (44) deflects to the lower left of the third section (43). Each section is smoothly connected. The mouth raised section includes the fifth section (45) and the sixth section (46) which are smoothly connected. The fifth section (45) deflects to the lower left of the fourth section (44), and the sixth section (46) deflects to the lower left of the fifth section (45).
3. The maxillary sinus floor lifting instrument according to claim 2, characterized in that: The angle α between the sixth segment (46) and the central axis of the first handle (1) is 0 to 60 degrees.
4. The maxillary sinus floor lifting instrument according to claim 2, characterized in that: The second working head (5) includes a seventh section (51), an eighth section (52), a ninth section (53), and a tenth section (54) that are smoothly connected. The seventh section (51) is coaxially arranged with the second connecting part (3) and extends away from the second connecting part (3). The eighth section (52) deflects to the lower right of the seventh section (51), and the ninth section (53) deflects to the upper right of the eighth section (52). The end of the ninth section is located on the extension line of the central axis. The tenth section (54) deflects to the lower right of the ninth section (53). The eighth section (52) and the ninth section (53) form a small wave segment with a span of 8-9 mm and a wave height of 2-4 mm. The ninth section (53) and the tenth section (54) form a large wave segment with a span of 15-18 mm and a wave height of 10 mm.
5. The maxillary sinus floor lifting instrument according to claim 4, characterized in that: The angle β between the tenth segment (54) of the second working head (5) and the central axis of the first handle (1) is 0 to 80 degrees.
6. The maxillary sinus floor lifting instrument according to claim 4, characterized in that: The angle between the end of the first working head (4) and the central axis of the first handle is the same as the angle between the end of the second working head (5) and the central axis of the first handle.
7. The maxillary sinus floor lifting instrument according to claim 1, characterized in that: It also includes a second instrument, which includes a second handle (6), a third connecting part (7) on the left side and a fourth connecting part (8) on the right side of the second handle (6), the third connecting part (7) is connected to the third working head (9), and the fourth connecting part (8) is connected to the fourth working head (10); the third working head (9) and the fourth working head (10) are in the shape of a question mark and deflected toward the second handle (6), and the third working head (9) and the fourth working head (10) deflect to the same side of the second handle (6).
8. The maxillary sinus floor lifting instrument according to claim 7, characterized in that: The third working head (9) includes a first bending section (91), a second bending section (92), and a third bending section (93) that are connected in a smooth transition. The first bending section (91) is coaxially arranged with the third connecting part (7). The second bending section (92) deflects to the upper left of the first bending section (91), and the third bending section (93) bends to the lower right of the second bending section (92). The angle α between the second bending section (92) and the central axis of the second handle (6) is 10 to 40°. The angle b between the third bending section (93) and the central axis of the second handle (6) is 110 to 170°.
9. The maxillary sinus floor lifting instrument according to claim 8, characterized in that: The fourth working head (10) is symmetrically arranged with the third working head (9). The fourth working head (10) includes a fourth bending section (101), a fifth bending section (102), and a sixth bending section (103) that are connected in a smooth transition. The fourth bending section (101) is coaxially arranged with the fourth connecting part (8). The fifth bending section (102) deflects to the upper right of the fourth bending section (101), and the sixth bending section (103) bends to the lower left of the fifth bending section (102). The angle α between the fifth bending section (102) and the central axis of the second handle (6) is 10 to 40°. The angle b between the sixth bending section (103) and the central axis of the second handle (6) is 110 to 170°.
10. The maxillary sinus floor lifting instrument according to claim 7, characterized in that: The No. 1 working head (4), No. 2 working head (5), No. 3 working head (9), and No. 4 working head (10) are made of shape memory alloy.