Auxiliary device for minimally invasive hallux valgus osteotomy
By designing auxiliary devices for minimally invasive thumb valgus osteotomy surgery, guiding the saw blade or drill rod using guide grooves and through holes, the problem of long and difficult adjustment in minimally invasive osteotomy surgery is solved, and the problem of high adjustment time and difficulty is achieved. Reducing radiation exposure and shortening of learning curves improves the homogeneity of surgery.
Patent Information
- Application Number
- CN202420767419.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-04-12
AI Technical Summary
Minimally invasive thumb valgus osteotomy surgery requires three-dimensional correction and is difficult to operate with bare hands, resulting in long adjustment time, large radiation dose for doctors and patients, high surgical cost, and high requirements for the operator's technology and proficiency, and the learning curve is too long. It is difficult to ensure homogeneity of the surgery.
A minimally invasive thumb valgus surgery auxiliary device is designed, including guides, guard rods, fixing seats and gripping rods, which guide the saw blade or drill rod through guide grooves and through holes to ensure that it is in bone cutting. Move in the plane, reducing the need for adjustment under fluoroscopy and reducing the difficulty of surgery.
Through this device, the exposure time of medical staff under radiation is reduced, the surgical cross-section is ensured, the learning curve is shortened, the operation difficulty is reduced, and the operation is improved.
Smart Images
Figure CN222323606U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical instruments, in particular to an auxiliary device for minimally invasive hallux valgus osteotomy surgery. 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, and its symptoms include bone hyperplasia, joint deformation and pain, local swelling and ulceration, limping and a series of other symptoms.
[0003] At present, the third-generation MICA technology in minimally invasive surgery is usually used to correct hallux valgus. This correction process is mostly performed under fluoroscopy based on the surgeon's feel and experience. In order to correctly place the screws and adjust the position, a large amount of X-ray fluoroscopy is required, which may lead to problems such as long adjustment time, excessive radiation dose for doctors and patients, and high surgical costs. The difficulty of minimally invasive hallux valgus osteotomy is that the distal metatarsal head needs three-dimensional correction. It is difficult to achieve the ideal state of preoperative design with freehand operation, and it cannot meet the preoperative quantitative requirements. There is a long learning curve to master the milling cutter or drill bit, feel the bone repair and generate the cutting direction. Therefore, this operation requires high skills and proficiency of the surgeon, the learning curve is too long and steep, it requires a long time of training, and the homogeneity of the surgery is difficult to ensure. Utility Model Content
[0004] The utility model solves the deficiencies of the prior art and provides an auxiliary device for minimally invasive hallux valgus osteotomy surgery.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] An auxiliary device for minimally invasive hallux valgus osteotomy surgery comprises a guide piece, a guard rod, a fixing seat and a holding rod; the guide piece is provided with a guide groove, the guide groove is suitable for a saw blade to pass through and limit the movement of the saw blade within the osteotomy plane; one end of the guard rod is connected to the guide piece, and the other end of the guard rod is provided with a spike; the fixing seat is perpendicular to the osteotomy plane and connected to the guide piece, and the fixing seat is provided with a through hole; one end of the holding rod is connected to the guide piece, and the holding rod is configured for an operator to hold.
[0007] Furthermore, the holding rod includes a first section and a second section, the first section is parallel to the fixing seat and one end of the first section is connected to the guide member, and the second section is perpendicular to the first section and extends in a direction away from the spike.
[0008] Furthermore, the through hole is a cylindrical hole, and the through hole is parallel to the osteotomy plane.
[0009] Furthermore, the guard rod is bent into an arc shape, and the plane where the axis of the guard rod is located is parallel to the osteotomy plane.
[0010] Furthermore, the guide groove has a first notch and a second notch, and both the first notch and the second notch are in the shape of long strips.
[0011] Furthermore, the guide member has a curved surface, the curved surface is concentric with the curved guard bar, and the first notch is located on the curved surface.
[0012] Furthermore, the guard rod is a round rod with a diameter of 5 mm.
[0013] Furthermore, the width of the guide groove is 1.8-2.2 mm.
[0014] Furthermore, the width of the guide groove is 2 mm.
[0015] Furthermore, the fixing seat and the holding rod are located on the same side of the osteotomy plane.
[0016] Compared with the prior art, the utility model has at least one of the following beneficial effects:
[0017] 1. Through the cooperation of the through hole and the Kirschner wire, the direction of osteotomy can be designed in advance under fluoroscopy, avoiding the medical staff from performing osteotomy under fluoroscopy for a long time and reducing the exposure time of medical staff to radiation;
[0018] 2. Use the guide groove to guide the saw blade so that the position of the saw blade always remains within the osteotomy plane during hallux valgus osteotomy, thus ensuring a flat cross section during surgery;
[0019] 3. Reducing the difficulty of hallux valgus osteotomy surgery will help shorten the initial learning curve of medical staff and ensure the homogeneity of surgery. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] 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 in the following description are only the utility models of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 It is a stereoscopic diagram of an auxiliary device for minimally invasive hallux valgus osteotomy surgery provided by the utility model.
[0022] Figure 2 The utility model is a front view of an auxiliary device for minimally invasive hallux valgus osteotomy surgery.
[0023] Figure 3 It is a left view of an auxiliary device for minimally invasive hallux valgus osteotomy surgery provided by the utility model.
[0024] Figure 4It is a schematic diagram of a drill rod passing through a guide groove of an embodiment of the utility model.
[0025] Reference numerals:
[0026] In the figure: 1, guide member; 11, guide groove; 111, first notch; 112, second notch; 12, curved surface; 2, guard rod; 21, spike; 3, fixing seat; 31, through hole; 4, holding rod; 41, first section; 42, second section; 5, drill rod. DETAILED DESCRIPTION
[0027] 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.
[0028] 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.
[0029] 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.
[0030] 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.
[0031] 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.
[0032] 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.
[0033] 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.
[0034] See also Figures 1 to 4 As shown, the utility model provides an auxiliary device for minimally invasive hallux valgus osteotomy surgery, which includes a guide member 1, a guard rod 2, a fixed seat 3 and a holding rod 4; the guide member 1 is provided with a guide groove 11, the guide groove 11 is suitable for a saw blade to pass through and limit the movement of the saw blade in the osteotomy plane; one end of the guard rod 2 is connected to the guide member 1, and the other end of the guard rod 2 is provided with a spike 21; the fixed seat 3 is perpendicular to the osteotomy plane and connected to the guide member 1, and the fixed seat 3 is provided with a through hole 31 for the Kirschner wire to pass through; one end of the holding rod 4 is connected to the guide member 1, and the holding rod 4 is used for medical operators to hold. Among them, the aforementioned saw blade can also be replaced by a drill rod 5. When the diameter of the drill rod is less than or equal to the thickness of the saw blade, the guide groove 11 can also limit the drill rod 5 to move only in the osteotomy plane. It is worth noting that the guide groove 11 needs to have an appropriate depth so that it can play a better guiding role, thereby limiting the movement of the saw blade in the osteotomy plane.
[0035] like Figure 1 As shown, the gripping rod 4 includes a first section 41 and a second section 42 connected to each other. The first section 41 is parallel to the fixing seat 3 and one end is welded to the guide member 1. The second section 42 is perpendicular to the first section 41 and extends in a direction away from the spike 21. The second section 42 is deviated from the osteotomy plane by the first section 41, so as to avoid the second section 42 affecting the osteotomy operation. In specific implementation, the gripping rod 4 can be formed by bending a round rod, and the second section 42 needs to have a suitable length for easy holding.
[0036] In the present invention, the through hole 31 is a cylindrical hole, and the through hole 31 is parallel to the osteotomy plane, and the diameter of the through hole 31 needs to be slightly larger than the diameter of the Kirschner wire to facilitate the insertion of the Kirschner wire. The present invention can achieve the design of the osteotomy direction in advance under fluoroscopy through the cooperation of the through hole 31 and the Kirschner wire, avoiding the medical staff from performing osteotomy under fluoroscopy for a long time, and reducing the exposure time of the medical staff to radiation.
[0037] In the present invention, the guard bar 2 is bent into an arc shape, and the plane where the axis of the guard bar 2 is located is parallel to the osteotomy plane. The guide groove 11 has a first notch 111 and a second notch 112, both of which are long strips. When in use, the saw blade is inserted from the second notch 112, and the head end of the saw blade extends from the first notch 111. The long strips of the first notch 111 and the second notch 112 allow the saw blade to have a swinging space in the guide groove 11, thereby realizing the osteotomy operation. Figure 1 As shown, the guide member 1 has a curved surface 12, which is concentric with the curved guard rod 2. The first notch 111 is located on the curved surface 12. The radius of the curved surface 12 is slightly smaller than the bending radius of the guard rod 2. The curved surface 12 and the guard rod 2 define an area that can accommodate human tissue.
[0038] In the utility model, the guard bar 2 is a round bar with a diameter of 5 mm. The round bar-shaped guard bar 2 is easy to insert into human tissue and causes less damage to human tissue. When performing minimally invasive hallux valgus osteotomy surgery, the guard bar 2 can be used to push the tendon apart, and the guard bar 2 can prevent the saw blade or drill rod from touching the tendon, thereby protecting the tendon.
[0039] In the present invention, the width D of the guide groove 11 is 1.8-2.2 mm, and the width of the guide groove 11 should be suitable for the saw blade to pass through, but the width of the guide groove 11 should not be much larger than the thickness of the saw blade to avoid the problem of uneven surgical cross-section. In some embodiments, the width D of the guide groove 11 is 2 mm.
[0040] In the present invention, the fixing seat 3 and the holding rod 4 are located on the same side of the osteotomy plane.
[0041] When the auxiliary device for minimally invasive hallux valgus osteotomy provided by the utility model is implemented, the guide groove 11 is used to guide the saw blade or the drill rod, so that when performing hallux valgus osteotomy, the position of the saw blade is always kept in the osteotomy plane, thereby ensuring that the surgical cross section (which coincides with the osteotomy plane) is flat. In addition, by using the auxiliary device for minimally invasive hallux valgus osteotomy, the difficulty of hallux valgus osteotomy can be reduced, which is conducive to shortening the early learning curve of medical staff and ensuring the homogeneity of surgery.
[0042] 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.
[0043] 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. An auxiliary device for minimally invasive hallux valgus osteotomy surgery, characterized in that: include: A guide member, wherein the guide member is provided with a guide groove, wherein the guide groove is suitable for a saw blade to pass through and limits the movement of the saw blade within an osteotomy plane; A guard rod, one end of which is connected to the guide member, and the other end of which is provided with a spike; A fixing seat, the fixing seat is perpendicular to the osteotomy plane and connected to the guide member; A gripping rod, one end of which is connected to the guide member, and the gripping rod is configured to be gripped by an operator.
2. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 1, characterized in that: The holding rod comprises a first section and a second section, wherein the first section is parallel to the fixing seat and one end of the first section is connected to the guide member, and the second section is perpendicular to the first section and extends in a direction away from the spike.
3. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 1, characterized in that: The fixing seat is provided with a through hole, the through hole is a cylindrical hole, and the through hole is parallel to the osteotomy plane.
4. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 1, characterized in that: The guard rod is bent into an arc shape, and the plane where the axis of the guard rod is located is parallel to the osteotomy plane.
5. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 4, characterized in that: The guide groove has a first notch and a second notch, and the first notch and the second notch are both in the shape of long strips.
6. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 5, characterized in that: The guide member has a curved surface, the curved surface is concentric with the guard bar, and the first notch is located on the curved surface.
7. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 4, characterized in that: The guard rod is a round rod with a diameter of 5 mm.
8. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 1, characterized in that: The width of the guide groove is 1.8-2.2 mm.
9. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 8, characterized in that: The width of the guide groove is 2 mm.
10. The auxiliary device for minimally invasive hallux valgus osteotomy surgery according to claim 1, characterized in that: The fixing seat and the holding rod are located on the same side of the osteotomy plane.