Arc-shaped cutter for minimally invasive hallux valgus and hallux adductor release
By using the combination of curved tools and probes, it is difficult to complete the problem of accurate and more accurate surgical processes in the existing technology under small incision, and achieve a safer and more accurate surgical process, which significantly improves the treatment effect.
Patent Information
- Application Number
- CN202420763191.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The prior art is difficult to complete precise relaxation under a small incision during the minimally invasive downward valgus and adductor muscle relaxation, resulting in increased difficulty in surgery.
The curved tool is used with a curved gap on the blade. The probe is used to detect the ligament position. The arc design of the blade and the blocking effect of the probe ensure the accuracy and safety of the cutting.
The completion of accurate relaxation in small incisions, reducing the difficulty of surgery, reducing damage to deep blood vessels and nerves, and significantly improved the treatment effect of vulgar surgery of the thumb.
Smart Images
Figure CN222398626U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical instruments, in particular to an arc-shaped cutter for releasing the adductor pollicis muscle of minimally invasive hallux valgus. Background Art
[0002] The big toe of a person's foot points outward due to various reasons, which is medically called "hallux valgus". It is a common disease in orthopedics. Its symptoms include bone hyperplasia, joint deformation and pain, local swelling and ulceration, limping, etc. With the continuous development of society and the continuous improvement of people's living standards, people, especially women, have higher and higher requirements for the aesthetics of the feet, and the demand for hallux valgus correction surgery is also increasing. The requirements for surgery have also shifted from improving function to seeking beauty and minimally invasive surgery.
[0003] The minimally invasive Chevron and Akin osteotomies (MICA) proposed by Vernois and Redfern et al. in 2011 is known as the third-generation minimally invasive technology for hallux valgus. This technology requires minimally invasive release of the adductor pollicis muscle, but it is difficult to complete precise release through a small incision during the release process. Utility Model Content
[0004] The utility model solves the deficiencies of the prior art and provides an arc-shaped cutter for releasing the adductor pollicis muscle of hallux valgus in a minimally invasive manner.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A curved tool for minimally invasive hallux valgus adductor hallucis release comprises a tool body and a tool head located at the distal end of the tool body, the tool head comprises a probe connected to the tool body and a blade, the probe is located at one end of the blade and extends in a direction away from the proximal end of the blade body, an arc-shaped notch is provided on the blade, and the width of the arc-shaped notch is less than the length of the blade.
[0007] Furthermore, the arc-shaped tool for minimally invasive hallux valgus adductor pollicis release also includes a handle connected to the proximal end of the tool body.
[0008] Furthermore, the extending direction of the blade is perpendicular to the extending direction of the distal end of the blade body.
[0009] Furthermore, the blade body includes a first section near the proximal end and a second section near the distal end, the blade head is located at an end of the second section away from the first section, the angle between the first section and the second section is an obtuse angle, and the plane where the first section and the second section are located is coplanar with the blade.
[0010] Furthermore, the angle between the first section and the second section is 160 degrees.
[0011] Further, the probe is located between the extension line of the first section and the blade.
[0012] Furthermore, the distal end of the blade body has a triangular rib, the proximal end of the triangular rib is equal to the thickness of the blade body, the distal end of the triangular rib is connected to the probe and is equal to the thickness of the probe, and the thickness of the triangular rib gradually decreases from the proximal end to the distal end.
[0013] Furthermore, the thickness of the probe is 0.85-1.15 mm.
[0014] Furthermore, the length of the blade is 4 to 5 mm.
[0015] Furthermore, the vertical distance between the distal end of the probe and the blade is 1.3-1.7 mm.
[0016] Through the above technical solution, the utility model will not injure deep blood vessels and nerves when in use, and is suitable for operation in a smaller incision. The adductor pollicis muscle can be opened in an incision of less than 0.5 mm at the minimum, and no auxiliary incision is used, so that the operation is reduced from two incisions to one incision. Therefore, compared with the prior art, the arc-shaped tool for minimally invasive hallux valgus adductor pollicis release provided by the utility model can achieve precise release under a small incision, reduce the difficulty of the operation, and is conducive to improving the minimally invasive surgery technology for hallux valgus and significantly improving the treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a stereogram of an embodiment of the utility model.
[0019] Figure 2 yes Figure 1 A magnified partial view of the distal end of the middle blade body.
[0020] Figure 3 It is the front view of the embodiment of the utility model.
[0021] Figure 4 yes Figure 3 A magnified partial view of the distal end of the middle blade body.
[0022] Figure 5 yes Figure 4 A view in the figure.
[0023] Reference numerals:
[0024] 1. Blade body; 11. First section; 12. Second section; 13. Triangular rib; 2. Blade head; 21. Probe; 22. Blade; 221. Notch; 222. Blade tip; 3. Handle; 4. Extension line of the first section. DETAILED DESCRIPTION
[0025] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
[0026] The present application provides these embodiments to make the present application thorough and complete, and to fully express the scope of the present application to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.
[0027] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0028] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.
[0029] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.
[0030] All terms used in this application have the same meaning as those understood by those of ordinary skill in the art to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.
[0031] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0032] The “proximal end” referred to in the present disclosure refers to the end closer to the operator, and the “distal end” refers to the end farther from the operator.
[0033] See also Figures 1 to 5 As shown, the utility model provides an arc-shaped knife for minimally invasive hallux valgus adductor hallucis release, which includes a knife body 1 and a knife head 2 located at the distal end of the knife body 1, the knife head 2 includes a probe 21 connected to the knife body 1 and a blade 22, the probe 21 is located at one end of the blade 22 and extends in a direction away from the proximal end of the knife body 1, and the blade 22 is provided with an arc-shaped notch 221, and the width of the arc-shaped notch 221 is less than the length of the blade 22. Figure 4 As shown, after the arc-shaped notch 221 is provided on the blade 22, a blade tip 222 for cutting the adductor pollicis is formed at a position of the blade 22 away from the probe 21. The probe 21 on the arc-shaped tool for minimally invasive hallux valgus adductor pollicis release is used to detect the position of the ligament to facilitate release under blind operation.
[0034] For convenient holding, a handle 3 can be installed at the proximal end of the arc-shaped tool for minimally invasive hallux valgus adductor hallucis release, and the handle 3 can be plug-in connected or threadedly connected to the tool body 1. For easy cutting operation, the extension direction of the blade 22 is perpendicular to the extension direction of the distal end of the tool body 1.
[0035] In order to further facilitate the cutting operation, the blade body 1 can be bent at a certain angle. Figure 3As shown, the bent blade body 1 includes a first section 11 near the proximal end and a second section 12 near the distal end, the blade head 2 is located at the end of the second section 12 away from the first section 11, the angle between the first section 11 and the second section 12 is an obtuse angle, and the plane where the first section 11 and the second section 12 are located is coplanar with the blade 22. In a preferred embodiment, the angle α between the first section 11 and the second section 12 is 160 degrees.
[0036] See also Figure 3 As shown, after the blade body 1 is bent, the probe 21 is located between the extension line 4 of the first section and the blade 22 .
[0037] See also Figure 5 As shown, the distal end of the blade body 1 has a triangular rib 13, the thickness of the proximal end of the triangular rib 13 is equal to the thickness D2 of the blade body 1, the distal end of the triangular rib 13 is connected to the probe 21, and the thickness of the distal end of the triangular rib 13 is equal to the thickness D1 of the probe 21, and the thickness of the triangular rib 13 gradually decreases from the proximal end to the distal end. The provision of the triangular rib 13 can effectively improve the structural strength of the connection portion of the probe 21.
[0038] In some embodiments, the thickness D1 of the probe 21 is 0.85-1.15 mm. In a preferred embodiment, the thickness D1 of the probe 21 is 1 mm.
[0039] In some embodiments, the length L1 of the blade 22 is 4-5 mm. In a preferred embodiment, the length L1 of the blade 22 is 4.5 mm.
[0040] In some embodiments, the vertical distance L2 between the distal end of the probe 21 and the blade 22 is 1.3-1.7 mm. In a preferred embodiment, the vertical distance L2 between the distal end of the probe 21 and the blade 22 is 1.5 mm.
[0041] When the arc-shaped cutter is used to cut the adductor muscle for hallux valgus adductor muscle release, the probe 21 acts as a barrier, and the blade 22 can only cut outwards, so that deep blood vessels and nerves will not be injured. It is suitable for operation in a smaller incision, and the adductor muscle can be opened in an incision of less than 0.5 mm at the minimum, and it does not need to be used as an auxiliary incision, so that the operation can be performed in one incision instead of two incisions.
[0042] The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release provided by the utility model is beneficial to improving the minimally invasive surgery technology for hallux valgus, significantly improving the treatment effect, reducing the reduction time, accurately reducing the osteotomized metatarsal head, reducing the amount of bleeding, reducing various intraoperative and postoperative complications and surgical risks, and reducing the radiation exposure of medical staff, which is of great significance to improving the level of hallux valgus treatment.
[0043] So far, various embodiments of the present application have been described in detail. In order to avoid obscuring the concept of the present application, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed herein.
[0044] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.
Claims
1. A curved tool for minimally invasive hallux valgus adductor hallucis release, comprising a tool body and a tool head located at the distal end of the tool body, characterized in that: The blade head comprises a probe connected to the blade body and a blade. The probe is located at one end of the blade and extends in a direction away from the proximal end of the blade body. An arc-shaped notch is provided on the blade, and the width of the arc-shaped notch is smaller than the length of the blade.
2. The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release according to claim 1, characterized in that: Also included is a handle connected to the proximal end of the blade body.
3. The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release according to claim 1, characterized in that: The extending direction of the blade is perpendicular to the extending direction of the distal end of the blade body.
4. The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release according to claim 1, characterized in that: The blade body includes a first section near the proximal end and a second section near the distal end, the blade head is located at an end of the second section away from the first section, the angle between the first section and the second section is an obtuse angle, and the plane where the first section and the second section are located is coplanar with the blade.
5. The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release according to claim 4, characterized in that: The included angle between the first section and the second section is 160 degrees.
6. The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release according to claim 4, characterized in that: The probe is located between the extension line of the first section and the blade.
7. The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release according to claim 1, characterized in that: The distal end of the blade body has a triangular rib, the distal end of the triangular rib is connected to the probe and has the same thickness as the probe, the distal end of the triangular rib has the same thickness as the probe, and the thickness of the triangular rib gradually decreases from the proximal end to the distal end.
8. The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release according to claim 1, characterized in that: The thickness of the probe is 0.85-1.15 mm.
9. The arc-shaped tool for releasing the adductor hallux valgus muscle for minimally invasive hallux valgus according to claim 1, characterized in that: The length of the blade is 4 to 5 mm.
10. The arc-shaped tool for minimally invasive hallux valgus adductor hallucis release according to claim 1, characterized in that: The vertical distance between the distal end of the probe and the blade is 1.3-1.7 mm.