A microvascularization stimulator

Abstract

The utility model relates to the technical field of medical orthopedics appliances, specifically relates to a microvessel generation stimulator, include: the fixed frame is installed with the stud and at least two support screws on it, the lifting frame is installed with at least one move screw on it, the lifting frame is equipped with the guide groove that support screw passes through, still include knob, the knob rotatablely installed on the lifting frame, the knob is equipped with knob inner thread through -hole, and the knob is connected with the stud through the knob inner thread through -hole, the knob includes operating part, and the operating part is located between the fixed frame and the lifting frame, taking the plane perpendicular to operating part rotation axis, the projection of operating part on the plane is recorded as a, the projection of lifting frame on the plane is recorded as b, and the projection of fixed frame on the plane is recorded as c, wherein, the projection b coincides with partial projection a, and the projection c coincides with partial projection a. The fixed frame and the lifting frame can form the shielding, the protection effect to operating part, thereby reduce the probability of false touch operating part.

Description

Technical Field

[0001] This utility model relates to the field of medical orthopedic device technology, specifically to a microvascular stimulator. Background Technology

[0002] Microangiogenesis stimulation involves traction on the bone cortex or osteotomy followed by traction, which induces the growth of blood vessels, nerves, and other soft tissue structures within the body. Microangiogenesis stimulation surgery is widely used for vascular diseases of the lower extremities, such as thromboangiitis obliterans and diabetic foot.

[0003] Chinese utility model patent with publication number CN219250380U discloses a transverse bone transport device, including a fixed crossbeam, a movable crossbeam horizontally arranged below the fixed crossbeam, a lifting screw limiting hole vertically opened in the middle of the fixed crossbeam, a lifting screw vertically arranged in the lifting screw limiting hole, the bottom end of the lifting screw being connected to the movable crossbeam, a number of bone pins being installed on the movable crossbeam, and a number of sliding holes vertically opened at both ends of the fixed crossbeam, the top end of the bone pins being slidably connected to the sliding holes.

[0004] For this type of transverse bone transport device, the adjusting nut is easily touched during daily life, or caught on clothing hooks. Rotation of the adjusting nut causes displacement of the movable crossbar, which in turn causes the bone pin to move, affecting the normal treatment process. To prevent accidental rotation of the adjusting nut or handle, a locking mechanism is proposed to fix the adjusting nut, handle, and lifting screw. However, adding an extra locking mechanism undoubtedly complicates the product structure and reduces ease of use. Utility Model Content

[0005] To address the problem in existing technologies where accidental activation of the drive mechanism can lead to displacement of the movable crossbeam, the purpose of this invention is to provide a microvascular stimulator.

[0006] The technical solution provided by this utility model is as follows:

[0007] In a first aspect, a microvascularization stimulation stent includes: a fixed frame with studs and at least two support screws mounted on it; a lifting frame with at least one transfer screw mounted on it; the lifting frame having a guide groove for the support screws to pass through; and a knob rotatably mounted on the lifting frame; the knob having an internal threaded through-hole, through which the knob is threadedly connected to the studs; the knob includes an operating part located between the fixed frame and the lifting frame; a plane perpendicular to the rotation axis of the operating part is taken, the projection of the operating part on this plane is denoted as 'a', the projection of the lifting frame on this plane is denoted as 'b', and the projection of the fixed frame on this plane is denoted as 'c'; wherein projection b coincides with a portion of projection a, and projection c coincides with a portion of projection a. The fixed frame and the lifting frame can shield and protect the operating part, thereby reducing the probability of accidental contact with the operating part.

[0008] As one optional technical solution in the first aspect, 80% to 90% of the projected area of ​​projection a coincides with projection c; 80% to 95% of the projected area of ​​projection a coincides with projection b; the area where projection c and projection a coincide is denoted as W1, and the area where projection b and projection a coincide is denoted as W2; wherein, W1 is located within W2. When the distance between the fixed frame and the lifting frame is small, since the fixed frame and the lifting frame do not completely obstruct the operating part, the operating part can still be rotated relatively easily.

[0009] As an optional technical solution of the first aspect, the knob further includes a connecting part, which is coaxially connected to the operating part; the connecting part is rotatably installed in a through hole provided in the support frame; the internal threaded through hole of the knob passes through the connecting part and the operating part, and is coaxial with the connecting part and the operating part.

[0010] Optionally, at least one protrusion is provided at the outer edge of the operating part; the protrusion is used to indicate the rotation angle of the knob and / or to provide a point of force for finger pushing.

[0011] As an optional technical solution in the first aspect, the support screw is provided with a third external thread portion, a guide portion, and a second external thread portion in sequence; wherein, the fixing bracket is provided with an internal thread through hole, and the third external thread portion of the support screw is threadedly connected to the internal thread through hole of the fixing bracket; the guide portion of the support screw passes through the guide groove.

[0012] As an optional technical solution in the first aspect, the transfer screw is provided with a first external thread portion and a second external thread portion in sequence; wherein, the lifting frame is provided with an internal threaded through hole, and the first external thread portion of the transfer screw is threadedly connected to the internal threaded through hole of the lifting frame. Providing the second external thread portion of the support screw and the second external thread portion of the transfer screw can improve the adhesion between the support screw / transfer screw and the bone, preventing the support screw / transfer screw from falling off the bone.

[0013] As an optional technical solution in the first aspect, the transfer screw is parallel to or forms an angle with the support screw, the angle being denoted as F, where the value of F is within the range of 0° < F ≤ 50°. The transfer screw can be offset by a certain angle, in which case the obliquely placed transfer screw is less likely to detach from the bone flap when carrying it.

[0014] As an optional technical solution in the first aspect, the moving screws are in at least one pair, and each pair of moving screws is symmetrically installed on the lifting frame with the knob axis as the axis of symmetry. Because the moving screws are symmetrically distributed, the lifting frame is subjected to more balanced and stable forces when the knob is rotated to drive the lifting frame to rise and fall.

[0015] As an optional technical solution in the first aspect, the end face of the support screw is approximately flush with the end face of the fixing frame that is away from the lifting frame. The end of the support screw is almost flush with the end face of the fixing frame, and the knob is also located between the fixing frame and the lifting frame. The outer side of the fixing frame has almost no protrusion, thus reducing the probability of the product snagging on the user's clothing during use and making it easier for the user to use.

[0016] As an optional technical solution in the first aspect, the support screw is provided with a through hole; and / or, the moving screw and the fixing bracket are provided with coaxial through holes; the through hole is used to insert a positioning pin.

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] The operating part of the knob in this invention is located between the fixed frame and the lifting frame. In this configuration, the operating part is not on the side of the fixed frame away from the lifting frame; that is, the operating part is not exposed, making it less likely for clothing to snag on it during daily life. Furthermore, the fixed frame and the lifting frame provide some protection to the operating part without completely obstructing it. This reduces the probability of accidental activation of the operating part and allows for convenient rotation even when the distance between the fixed frame and the lifting frame is small. Attached Figure Description

[0019] Figure 1 This is a front view of a microvascular stimulator in one embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the positioning pin being inserted in one embodiment of this application;

[0021] Figure 3 This is a top view of a microvascular stimulator in one embodiment of this application;

[0022] Figure 4 This is a cross-sectional view of a microvascular stimulator in one embodiment of this application;

[0023] Figure 5This is a perspective view of a knob in one embodiment of this application.

[0024] Explanation of the labels in the diagram:

[0025] Support screw guide part 101-1, support screw second external thread part 101-2, support screw third external thread part 101-3, fixing bracket 102, central through hole 103;

[0026] The first external threaded part of the moving screw 201-1, the second external threaded part of the moving screw 201-2, and the lifting frame 202;

[0027] Operating part 301-1, knob internal thread through hole 301-2, connecting part 301-3, stud 302;

[0028] Positioning pin 401. Detailed Implementation

[0029] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0030] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the invention. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0031] In one embodiment, such as Figure 1-4 As shown, this application proposes a microvascular stimulator, including a fixing frame 102, a lifting frame 202, support screws, a moving screw, a knob, and studs. The support screws are mounted on the fixing frame 102, and there are at least two support screws, such as... Figure 1 , Figure 2 , Figure 4 The fixture 102 is shown to have two support screws installed on it. The number of support screws is not limited to two; it can also be three, four, five, or six, etc., but there must be at least one support screw at each end of the fixture 102. The lifting frame 202 is equipped with at least one moving screw; optionally, Figure 1 , Figure 2 , Figure 4The image shows that two moving screws are installed on the lifting frame 202. The number of moving screws is not limited to two; it can also be three, four, five, or six, etc.

[0032] Specifically, the fixed frame 102 and the lifting frame 202 are arranged side by side. The shape of the fixed frame 102 and the lifting frame 202 is not limited; they can be rod-shaped, and each corner has a smooth rounded corner to avoid scratching hands and improve grip comfort. In addition, the fixed frame 102 and the lifting frame 202 can also be provided with through holes or grooves for weight reduction, and can also be provided with reinforcing ribs to enhance structural strength. The material of the fixed frame 102 and the lifting frame 202 can be made of alloy, such as titanium-aluminum alloy, or other materials in the prior art, which are not limited or described in detail here.

[0033] At least two support screws are installed on the mounting bracket 102, optionally, such as Figure 1 , Figure 2 , Figure 4 As shown, two support screws are installed on the fixation frame 102. The two support screws are spaced apart. In use, the spaced-apart support screws are inserted into the fixation bone block next to the bone block to be moved, serving to fix the microvascular stimulator scaffold. Since the bone block to be moved has a certain length, the distance between the support screws must be greater than the length of the bone block to be moved.

[0034] The lifting frame 202 is provided with guide slots for the support screws to pass through. Since the support screws also serve a guiding function during the lifting process of the lifting frame 202, they are all parallel to each other. If the support screws are not parallel, the lifting frame 202 will jam when it moves up and down along the support screws.

[0035] The knob is rotatably mounted on the lifting frame 202, and the knob has an internal threaded through hole 301-2. The knob is threadedly connected to the stud 302 through the internal threaded through hole 301-2. In use, the support screw is inserted into the fixed bone block, the moving screw is inserted into the bone block to be moved, and when the knob is rotated to raise and lower the lifting frame 202, the bone block to be moved will rise and fall together.

[0036] The knob includes an operating part 301-1, which the user rotates. To prevent accidental activation of the operating part 301-1 during daily life, which could cause the lifting frame 202 to move, the operating part 301-1 in this embodiment is located between the fixed frame 102 and the lifting frame 202. In this case, the fixed frame 102 and the lifting frame 202 can shield and protect the operating part 301-1, thereby further reducing the possibility of accidental activation and preventing the lifting frame 202 from moving due to accidental activation.

[0037] Specifically, a plane perpendicular to the rotation axis of the operating part 301-1 is taken. The projection of the operating part 301-1 onto this plane is denoted as 'a', the projection of the lifting frame 202 onto this plane is denoted as 'b', and the projection of the fixed frame 102 onto this plane is denoted as 'c'. Projection b partially coincides with projection a, and projection c also partially coincides with projection a. That is to say, the fixed frame 102 and the lifting frame 202 can shield the operating part 301-1. However, considering the need to leave space for medical personnel to manually rotate the knob, the fixed frame 102 and the lifting frame 202 do not completely obstruct the operating part 301-1.

[0038] Preferably, 80%–90% of the projected area of ​​projection a coincides with projection c, and 80%–95% of the projected area of ​​projection a coincides with projection b. The area where projection c and projection a coincide is denoted as W1, and the area where projection b and projection a coincide is denoted as W2; wherein, W1 is always located within W2.

[0039] Since medical staff often operate on the side of the fixed frame 102 away from the lifting frame 202, the area covered and protected by the fixed frame 102 is appropriately reduced in order to facilitate the rotation of the operating part 301-1 by medical staff and to facilitate the observation of the rotation status of the operating part 301-1.

[0040] Regarding the structure of the knob, in one alternative embodiment, such as Figure 4-5 As shown, the knob also includes a connecting part 301-3, which is coaxially connected to the operating part 301-1. The connecting part 301-3 is rotatably mounted in a through hole provided in the lifting frame 202. A bearing can be installed in the through hole, allowing the connecting part 301-3 to be mounted within the bearing. Alternatively, the connecting part 301-3 can be directly mounted in the through hole, allowing it to rotate relative to the lifting frame 202. This connection method is relatively mature in the prior art and will not be elaborated or limited here.

[0041] It should be noted that the internal threaded through hole 301-2 of the knob passes through the connecting part 301-3 and the operating part 301-1, and is coaxial with the connecting part 301-3 and the operating part 301-1.

[0042] Optionally, for the structure of the operating part 301-1, at least one protrusion is provided at the outer edge of the operating part 301-1. Figure 5 The operating part 301-1 shown has multiple protrusions. These protrusions are evenly spaced in a ring, with grooves forming between adjacent protrusions. By providing these protrusions, markings can be placed on them, allowing the user to determine the height of the lifting frame 202 by indicating the rotation angle of the knob. Furthermore, the protrusions and recesses also provide points of force for the user to push and turn the operating part 301-1, thus facilitating user operation.

[0043] In one embodiment, the support screw is provided with a third external thread portion 101-3, a guide portion 101-1, and a second external thread portion 101-2 in sequence.

[0044] The fixing bracket 102 is provided with an internal threaded through hole, and the third external threaded part 101-3 of the support screw is threadedly connected to the internal threaded through hole of the fixing bracket.

[0045] The support screw guide part 101-1 passes through the guide groove. When the lifting frame 202 is raised or lowered, the support screw guide part 101-1 acts as a guide rod.

[0046] In one embodiment, the transfer screw is provided with a first external thread portion 201-1 and a second external thread portion 201-2 in sequence.

[0047] The lifting frame 202 is provided with an internal threaded through hole, and the first external threaded part 201-1 of the moving screw is threadedly connected to the internal threaded through hole of the lifting frame.

[0048] To prevent the screw from falling off the bone when it is inserted, the support screw may optionally have a second external thread portion 101-2, and the transfer screw may have a second external thread portion 201-2. When the support screw and the transfer screw are inserted into the bone, at least a portion of the second external thread portion 101-2 of the support screw and the second external thread portion 201-2 of the transfer screw are located inside the bone, thereby preventing the screw from falling off the bone.

[0049] To address the problem of transfer screws detaching from the bone fragment during bone transfer, in one optional embodiment, the transfer screw is parallel to or forms an angle with the support screw, denoted as F, where F satisfies the condition: 0° < F ≤ 50°. That is, the support screw is perpendicular to the bone surface, while the transfer screw is inclined. This inclined placement of the transfer screw improves the bonding strength with the bone fragment and prevents loosening of the transfer screw relative to the bone fragment.

[0050] To improve the stability of the microvascular stimulator stent, the transfer screws have at least one pair, such as one or two pairs. Each pair of transfer screws is symmetrically installed on the lifting frame 202 with the knob axis as the axis of symmetry. The symmetrically distributed transfer screws are subjected to more balanced forces.

[0051] The end face of the support screw is approximately flush with the end face of the fixing bracket 102 that is away from the lifting frame 202. This prevents clothing from being caught due to the protruding support screw.

[0052] The support screw has a central through hole 103, and / or the transfer screw and fixation bracket 102 have a coaxial central through hole 103, which is used to insert the positioning pin 401. Before inserting the screw into the bone block, the positioning pin 401 can be driven into the bone block first, and then the screw can be screwed in after aligning with the positioning pin 401, and then the positioning pin 401 can be removed. At the same time, when the patient uses the microvascular stimulator stent, appropriate measures can be taken to seal the central through hole 103, such as a rubber plug, to prevent foreign objects from entering the central through hole 103.

[0053] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A microangiogenesis stimulator, comprising: A mounting bracket (102) is provided with studs (302) and at least two support screws. A lifting frame (202) is provided with at least one moving screw installed on it; the lifting frame (202) is provided with a guide groove through which the supporting screw passes. Its features are: It also includes a knob that is rotatably mounted on the lifting frame (202); the knob is provided with a knob internal thread through hole (301-2), and the knob is threadedly connected to the stud (302) through the knob internal thread through hole (301-2); The knob includes an operating part (301-1) located between the fixed frame (102) and the lifting frame (202); Take a plane perpendicular to the rotation axis of the operating part (301-1). The projection of the operating part (301-1) on this plane is denoted as a, the projection of the lifting frame (202) on this plane is denoted as b, and the projection of the fixed frame (102) on this plane is denoted as c. Among them, projection b coincides with a portion of projection a, and projection c coincides with a portion of projection a.

2. The microvascularization stimulator according to claim 1, characterized in that: 80% to 90% of the projected area of ​​projection a coincides with that of projection c; 80% to 95% of the projected area of ​​projection a coincides with that of projection b; The region where projection c coincides with projection a is denoted as W1, and the region where projection b coincides with projection a is denoted as W2; where W1 is located within W2.

3. The microvascularization stimulator according to claim 1, characterized in that: The knob also includes a connecting part (301-3), which is coaxially connected to the operating part (301-1); The connecting part (301-3) is rotatably installed in the through hole provided in the support frame; The internal threaded through hole (301-2) of the knob passes through the connecting part (301-3) and the operating part (301-1), and is coaxial with the connecting part (301-3) and the operating part (301-1).

4. The microvascularization stimulator according to claim 3, characterized in that: At least one protrusion is provided on the outer edge of the operating part (301-1); The protrusion is used to indicate the rotation angle of the knob and / or to provide a point of force for the finger to push.

5. The microvascularization stimulator according to claim 1, characterized in that: The support screw is provided with a third external thread portion (101-3), a guide portion (101-1), and a second external thread portion (101-2) in sequence; in, The microvascular stimulator is provided with a fixed frame internal thread through hole, and the third external thread part (101-3) of the support screw is threadedly connected to the fixed frame internal thread through hole; The support screw guide (101-1) passes through the guide groove.

6. The microvascularization stimulator according to claim 1, characterized in that: The transfer screw is provided with a first external thread portion (201-1) and a second external thread portion (201-2) in sequence; in, The lifting frame (202) is provided with an internal threaded through hole, and the first external threaded part (201-1) of the moving screw is threadedly connected to the internal threaded through hole of the lifting frame.

7. The microvascularization stimulator according to claim 1, characterized in that: The moving screw is parallel to or forms an angle with the support screw, and the angle is denoted as F, where the range of F is: 0°<F≤50°.

8. The microvascularization stimulator according to claim 1, characterized in that: The transfer screws are in at least one pair, and each pair of transfer screws is symmetrically mounted on the lifting frame (202) with the knob axis as the axis of symmetry.

9. The microvascularization stimulator according to claim 1, characterized in that: The end face of the support screw is approximately flush with the end face of the fixed frame (102) away from the lifting frame (202).

10. The microangiogenesis stimulator according to any one of claims 1-9, characterized in that: The support screw is provided with a through hole (103); and / or, the moving screw and the fixing bracket (102) are provided with a coaxial through hole (103); The through hole (103) is used to insert the positioning pin (401).

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