CN212630967U - Spherical mesh-shaped 4D memory alloy femoral head supporting device - Google Patents
Spherical mesh-shaped 4D memory alloy femoral head supporting device Download PDFInfo
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- CN212630967U CN212630967U CN202020748352.6U CN202020748352U CN212630967U CN 212630967 U CN212630967 U CN 212630967U CN 202020748352 U CN202020748352 U CN 202020748352U CN 212630967 U CN212630967 U CN 212630967U
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Abstract
The utility model discloses a spherical mesh-shaped 4D memory alloy femoral head supporting device, which comprises a spherical mesh-shaped 4D memory alloy femoral head supporting body and a minimally invasive implanting device; the spherical mesh-shaped 4D memory alloy femoral head support comprises a mesh-shaped spherical surface, wherein the mesh-shaped spherical surface is formed by intersecting metal wires, and the metal wires are memory alloy; the minimally invasive implanting device comprises a sleeve, wherein the sleeve is provided with a pushing mechanism for pushing the spherical mesh-shaped 4D memory alloy femoral head support to move along the axial direction of the sleeve; the inner diameter of the sleeve is larger than the diameter of the reticular spherical surface in a compression state. The spherical mesh-shaped 4D memory alloy femoral head support body can provide uniform circumferential expansion support while providing axial support; the minimally invasive implanting device is used for implanting the spherical mesh-shaped 4D memory alloy femoral head support body, and is convenient and reliable to install.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to a spherical netted 4D memory alloy femoral head strutting arrangement.
Background
Avascular necrosis of the femoral head is a common disease and frequently encountered diseases in orthopedics, the avascular necrosis of the femoral head can cause death of active ingredients of the femoral head due to the blood supply destruction of the femoral head caused by various reasons, and in the process of repairing a osteonecrosis area of an organism, the bone trabecula which is necrotic in the early stage is mainly absorbed, so that a collapse area is more fragile.
One of the existing treatment methods is to support the device by a support device. Existing support devices are rod-like or umbrella-like and generally provide axial or partial support.
The patent application (application number: 201710971095.5) discloses a hollow titanium rod with a fixing device for supporting a femoral head to prevent collapse, which comprises a rod body and the fixing device, wherein the rod body is integrally formed, the rod body is an octagonal prism, a hydroxyapatite coating is arranged on the outer surface of the rod body, a through hole is formed in the rod body along the axial direction of the rod body, a thick thread is arranged at the tail end of the rod body, an inner hexagonal notch is formed in the tail end of the rod body, the inner hexagonal notch is communicated with the through hole, and the fixing device is connected with the tail end of the rod body. The utility model discloses a femoral head supports the department of subsides that the titanium stick implanted the femoral head and plays mechanical supporting role, and improves femoral head, neck ground biomechanics characteristic, prevents that the femoral head from subsideing, and the femoral head supports the titanium stick and designs into hollow structure, can exert femoral head decompression effect for a long time, and the hydroxyapatite coating of titanium stick external surface is good with human histocompatibility, and titanium stick tail end is provided with fixing device, has prevented the not hard up slippage of titanium stick effectively.
Another patent application (application number: 201110161085.8) discloses a nickel-titanium memory alloy umbrella-titanium cage femoral head internal support which is composed of a nickel-titanium memory alloy umbrella, a TA2 pure titanium support body and a TA2 pure titanium tail fastening screw, can contain bone materials or production factors, and can automatically increase the support area after being implanted.
Another example is the patent application (application No. 201020641438.5) which discloses an umbrella-shaped memory alloy femoral head supporter, which is composed of 8 supporting ribs.
Reference may also be made to the following patents (publication numbers: CN 102824208A; CN 201912208U).
The design of strutting arrangement all has not enough in above patent application, because its design and size are unreasonable, and the supporting role is only less local, and all uses the axial as main direction of support, can not provide holistic expansibility support. Although some patents adopt memory alloy to achieve the purpose of minimally invasive treatment, the nickel-titanium alloy cannot provide long-term effective support due to the strength and the shape and size of the nickel-titanium alloy. This was also confirmed by its relevant clinical studies.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a spherical netted 4D memory alloy femoral head supporting device, which comprises a spherical netted 4D memory alloy femoral head supporting body and a minimally invasive implantation device, wherein the spherical netted 4D memory alloy femoral head supporting body can provide even circumferential expansibility support while providing axial support; the minimally invasive implanting device is used for implanting the spherical mesh-shaped 4D memory alloy femoral head support body, and is convenient and reliable to install.
In order to achieve the purpose, the utility model adopts the following technical proposal to realize:
the utility model discloses a spherical mesh-shaped 4D memory alloy femoral head supporting device, which comprises a spherical mesh-shaped 4D memory alloy femoral head supporting body and a minimally invasive implanting device; the spherical mesh-shaped 4D memory alloy femoral head support comprises a mesh-shaped spherical surface, wherein the mesh-shaped spherical surface is formed by intersecting metal wires, and the metal wires are memory alloy; the minimally invasive implanting device comprises a sleeve, wherein the sleeve is provided with a pushing mechanism for pushing the spherical mesh-shaped 4D memory alloy femoral head support to move along the axial direction of the sleeve; the inner diameter of the sleeve is larger than the diameter of the reticular spherical surface in a compression state.
Preferably, the memory alloy is a nickel titanium alloy.
Further, the wire comprises at least two diameters of wire.
Preferably, the metal wires are two types, namely a fine metal wire and a coarse metal wire, the diameter of the fine metal wire is 200-.
Furthermore, a water cooling structure is arranged in the side wall of the sleeve, and a water inlet and a water outlet of the water cooling structure are both positioned at the lower part of the sleeve.
Preferably, the pushing mechanism comprises a sliding block, a screw rod and a cap body, the sliding block is in axial sliding fit with the inner wall of the sleeve, the upper end of the sliding block is an arc surface, the curvature of the arc surface is larger than that of the net-shaped spherical surface, a pit is arranged at the lower end of the sliding block, the front end of the screw rod is matched with the pit, the cap body is in threaded connection with the lower end of the sleeve, a threaded through hole A is arranged in the center of the cap body, and the screw rod is in threaded fit; the inner wall of the sleeve is provided with an axial guide groove, the axial guide groove penetrates through the lower end of the sleeve and does not penetrate through the upper end of the sleeve, and the side wall of the sliding block is provided with guide ribs matched with the axial guide groove.
Furthermore, pushing mechanism still includes the guide block, the guide block suit is in the sleeve, and the guide block center is equipped with screw through-hole B, screw rod and screw through-hole B screw-thread fit, and the guide block outer wall is equipped with the anti-protruding corrugated of preventing with axial guide slot adaptation.
Furthermore, a locking mechanism is arranged between the cap body and the sleeve, and the locking mechanism is a buckle.
Preferably, the water-cooling structure is including being located the intermediate layer of telescopic lateral wall, be equipped with axial baffle in the intermediate layer, axial baffle is cut apart into water district and play pool with the lower part of intermediate layer, the water inlet is located into water district, the delivery port is located out pool, interbedded top intercommunication.
The utility model has the advantages as follows:
1. the spherical mesh-shaped 4D memory alloy femoral head support body is a spherical surface, and can provide uniform circumferential expansibility support while providing axial support.
2. The spherical mesh-shaped 4D memory alloy femoral head support is in a mesh shape, and has good osteoconductivity and osteoinductivity.
3. The spherical mesh 4D memory alloy femoral head support body is made of nickel-titanium alloy and has good biocompatibility.
4. The spherical mesh-shaped 4D memory alloy femoral head support body is combined with the thick metal wire and the thin metal wire, so that not only is enough support strength ensured, but also the bone conductivity of the support body is improved.
5. The minimally invasive implantation tool can be conveniently and safely implanted into the spherical mesh-shaped 4D memory alloy femoral head supporting device.
6. The minimally invasive implantation tool comprises a water cooling mechanism, and can ensure that the spherical mesh-shaped 4D memory alloy femoral head supporting device keeps a pressed state in the implantation process.
7. The minimally invasive implantation tool is provided with a guide mechanism, an anti-rotation mechanism and a locking mechanism, and the operation stability of the implantation process can be further ensured.
Drawings
Fig. 1 is a schematic structural view of a spherical mesh-shaped 4D memory alloy femoral head support in a recovery state;
FIG. 2 is a partial enlarged view of the surface of a spherical mesh 4D memory alloy femoral head support;
FIG. 3 is a schematic view of a minimally invasive implantation tool;
FIG. 4 is a partial expanded view of the inner wall of the sleeve;
FIG. 5 is a radial cross-sectional view of the sleeve;
FIG. 6 is an axial cross-sectional view of the sleeve;
in the figure: 1-spherical plain mesh, 11-thick wire, 12-thin wire, 2-sleeve, 21-sleeve external thread, 22-water inlet, 23-water outlet, 24-sandwich, 25-axial partition, 26-axial guide groove, 3-slide block, 31-arc, 32-pit, 33-guide rib, 4-screw, 41-screw external thread, 42-nut, 5-guide block, 51-internal thread of through-hole B, 52-anti-rotation rib, 6-cap, 61-cap internal thread, 62-groove, 63-internal thread of through-hole a, 7-snap, 71-protrusion.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.
The utility model discloses a spherical netted 4D memory alloy femoral head strutting arrangement includes spherical netted 4D memory alloy femoral head supporter and wicresoft implants the instrument.
As shown in fig. 1 and 2, the spherical mesh-shaped 4D memory alloy femoral head support body is a mesh-shaped spherical surface 1, the mesh-shaped spherical surface 1 is formed by intersecting metal wires, the metal wires are memory alloy, and the memory alloy is preferably nickel-titanium alloy.
The metal wires comprise at least two metal wires with different diameters, the two metal wires in the embodiment are respectively a fine metal wire 12 and a coarse metal wire 11, the diameter of the fine metal wire 12 is 200-300 μm, the diameter of the coarse metal wire 11 is 1000-1200 μm, and the number ratio of the fine metal wire 11 to the coarse metal wire 12 is 8:2 to 3: 7.
As shown in fig. 3, 4, 5 and 6, the minimally invasive implantation tool comprises a sleeve 2, wherein the sleeve 2 is provided with a pushing mechanism for pushing the spherical mesh-shaped 4D memory alloy femoral head support to move axially along the sleeve 2; the inner diameter of the sleeve 2 is larger than the diameter of the reticular spherical surface 1 in a compression state; the pushing mechanism comprises a sliding block 3, a screw rod 4 and a cap body 6, the sliding block 3 is in axial sliding fit with the inner wall of the sleeve 2, the upper end of the sliding block is an arc surface 31, the curvature of the arc surface 31 is larger than that of the net-shaped spherical surface 1, the lower end of the sliding block 3 is provided with a pit 32, the front end of the screw rod 4 is matched with the pit 32, the cap body 6 is in threaded connection with the lower end of the sleeve 2, specifically, the cap body 6 is provided with a cap body internal thread 61, and the lower end of; a threaded through hole A is formed in the center of the cap body 6, the screw rod 4 is in threaded fit with the threaded through hole A, and specifically, the screw rod external thread 41 of the screw rod 4 is matched with the internal thread 63 of the threaded through hole A; the inner wall of the sleeve 2 is provided with an axial guide groove 26, the axial guide groove 26 penetrates the lower end of the sleeve 2, the axial guide groove 26 does not penetrate the upper end of the sleeve 2, and the side wall of the sliding block 3 is provided with a guide rib 33 adapted to the axial guide groove 26.
The pushing mechanism further comprises a guide block 5, the guide block 5 is sleeved in the sleeve 2, a threaded through hole B is formed in the center of the guide block 5, the screw is in threaded fit with the threaded through hole B, specifically, the external screw thread 41 of the screw 4 is matched with the internal screw thread 51 of the threaded through hole B, and the outer wall of the guide block 5 is provided with an anti-bending corrugated rib 52 matched with the axial guide groove 26.
Of course, there may be a plurality of axial guide grooves 26, guide ribs 33, and anti-bending ribs 52.
A locking mechanism is arranged between the cap body and the sleeve, and the locking mechanism is a buckle; specifically, the buckle includes the card strip 7 with sleeve 2 swing joint, is equipped with arch 71 on the card strip 7, and the cap body 6 is equipped with recess 62, and arch 71 and recess 62 block.
The water cooling structure is arranged in the side wall of the sleeve 2, a water inlet 22 and a water outlet 23 of the water cooling structure are both located at the lower portion of the sleeve 2, the water cooling structure further comprises an interlayer 24 located in the side wall of the sleeve 2, an axial partition plate 25 is arranged in the interlayer 24, the lower portion of the interlayer 24 is divided into a water inlet area and a water outlet area by the axial partition plate 25, the water inlet 22 is located in the water inlet area, the water outlet 23 is located in the water outlet area, and the top of the interlayer 24.
The utility model discloses a use method as follows: the sleeve 2 is filled with cold water, the netlike spherical surfaces 1 and 3-sliding blocks in a pressed state are sequentially placed into the sleeve 2, the screw rod 4 sequentially penetrates through the cap body 6 and the guide block 5 and then is inserted into the sleeve 2, the cap body 6 is screwed and sleeved on the sleeve 2, then the screw cap 42 of the screw rod 4 is screwed, the front end of the screw rod 4 is inserted into the pit 32, the sleeve is inserted into an installation position, the screw cap 42 is further screwed, and the netlike spherical surface 1 is pushed to the installation position.
In order to prevent the cap body 6 from loosening, the cap body 6 can be locked on the sleeve 2 through the buckle 7.
Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.
Claims (9)
1. Spherical netted 4D memory alloy femoral head strutting arrangement which characterized in that: comprises a spherical mesh-shaped 4D memory alloy femoral head support and a minimally invasive implantation device; the spherical mesh-shaped 4D memory alloy femoral head support comprises a mesh-shaped spherical surface, wherein the mesh-shaped spherical surface is formed by intersecting metal wires, and the metal wires are memory alloy; the minimally invasive implanting device comprises a sleeve, wherein the sleeve is provided with a pushing mechanism for pushing the spherical mesh-shaped 4D memory alloy femoral head support to move along the axial direction of the sleeve; the inner diameter of the sleeve is larger than the diameter of the reticular spherical surface in a compression state.
2. The spherical mesh 4D memory alloy femoral head support device of claim 1, wherein: the memory alloy is nickel titanium alloy.
3. The spherical mesh 4D memory alloy femoral head support device of claim 1, wherein: the wire comprises wires of at least two diameters.
4. The spherical mesh 4D memory alloy femoral head support device of claim 3, wherein: the metal wires are divided into two types, namely a fine metal wire and a coarse metal wire, the diameter of the fine metal wire is 200-300 mu m, the diameter of the coarse metal wire is 1000-1200 mu m, and the number ratio of the fine metal wire to the coarse metal wire is 8: 2-3: 7.
5. The spherical mesh 4D memory alloy femoral head support device of claim 1, wherein: a water cooling structure is arranged in the side wall of the sleeve, and a water inlet and a water outlet of the water cooling structure are both located at the lower portion of the sleeve.
6. The spherical mesh 4D memory alloy femoral head support device of claim 5, wherein: the pushing mechanism comprises a sliding block, a screw rod and a cap body, the sliding block is in axial sliding fit with the inner wall of the sleeve, the upper end of the sliding block is an arc surface, the curvature of the arc surface is larger than that of the net-shaped spherical surface, a pit is formed in the lower end of the sliding block, the front end of the screw rod is matched with the pit, the cap body is in threaded connection with the lower end of the sleeve, a threaded through hole A is formed in the center of the cap body, and the screw rod is in threaded; the inner wall of the sleeve is provided with an axial guide groove, the axial guide groove penetrates through the lower end of the sleeve and does not penetrate through the upper end of the sleeve, and the side wall of the sliding block is provided with guide ribs matched with the axial guide groove.
7. The spherical mesh 4D memory alloy femoral head support device of claim 6, wherein: the pushing mechanism further comprises a guide block, the guide block is sleeved in the sleeve, a threaded through hole B is formed in the center of the guide block, the screw is in threaded fit with the threaded through hole B, and the outer wall of the guide block is provided with an anti-bending corrugated device matched with the axial guide groove.
8. The spherical mesh 4D memory alloy femoral head support device of claim 6, wherein: a locking mechanism is arranged between the cap body and the sleeve, and the locking mechanism is a buckle.
9. The spherical mesh 4D memory alloy femoral head support device of claim 5, wherein: the water-cooling structure is including being located the intermediate layer of telescopic lateral wall, be equipped with axial baffle in the intermediate layer, axial baffle is cut apart into water district and play pool with the lower part of intermediate layer, the water inlet is located into water district, the delivery port is located out pool, interbedded top intercommunication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020748352.6U CN212630967U (en) | 2020-05-08 | 2020-05-08 | Spherical mesh-shaped 4D memory alloy femoral head supporting device |
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| CN202020748352.6U CN212630967U (en) | 2020-05-08 | 2020-05-08 | Spherical mesh-shaped 4D memory alloy femoral head supporting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117694137A (en) * | 2024-02-06 | 2024-03-15 | 水利部牧区水利科学研究所 | Wind erosion prevention shrub planting equipment and planting method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117694137A (en) * | 2024-02-06 | 2024-03-15 | 水利部牧区水利科学研究所 | Wind erosion prevention shrub planting equipment and planting method thereof |
| CN117694137B (en) * | 2024-02-06 | 2024-04-05 | 水利部牧区水利科学研究所 | Wind erosion prevention shrub planting equipment and planting method thereof |
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