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Additive manufacturing nickel-titanium alloy femoral stem prosthesis and preparation method thereof

A nickel-titanium alloy, additive manufacturing technology, applied in the direction of prosthesis, femoral head, femoral shaft, etc., to achieve the effect of reducing the difficulty of surgery, good matching, and reducing the modulus of elasticity

Pending Publication Date: 2021-07-27
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of additively manufactured nickel-titanium alloy femoral stem prosthesis and its preparation method, to solve the technical problems existing in the prior art

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  • Additive manufacturing nickel-titanium alloy femoral stem prosthesis and preparation method thereof
  • Additive manufacturing nickel-titanium alloy femoral stem prosthesis and preparation method thereof
  • Additive manufacturing nickel-titanium alloy femoral stem prosthesis and preparation method thereof

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Embodiment Construction

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly or indirectly located on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. The indicated orientation or position is based on the orientation or position shown in the drawings, and is only for conv...

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Abstract

The invention relates to the technical field of medical prostheses, and provides an additive manufacturing nickel-titanium alloy femoral stem prosthesis and a preparation method thereof. The prosthesis body adjusts the phase change temperature of the deformation-recovery area by finely adjusting the content of nickel in the nickel-titanium alloy, so that the elastic modulus of the deformation-recovery area at the temperature of a human body is changed; when the deformation-recovery area is at the ice water temperature, the deformation-recovery area is in a martensitic condition, and when the deformation-recovery area is at 10-20 DEG C, the deformation-recovery area is in an austenitic condition. The deformation-recovery area with the porous structure after the elastic modulus is adjusted deforms in ice water through external stress, and after the deformation-recovery area is implanted into a human body, deformation recovery is achieved, and the deformation-recovery area is flexibly connected with the human body. The invention has the beneficial effects that the elasticity modulus of the implant can be reduced and the stress shielding effect can be relieved by adjusting the elasticity modulus of the preparation material and combining the porous structure design. Meanwhile, the shape of the prosthesis can be reduced through low-temperature deformation before the prosthesis is implanted, the shape of the prosthesis is restored after the prosthesis is implanted into the human body, the operation difficulty can be greatly reduced, and the operation process is simplified.

Description

technical field [0001] The invention relates to the technical field of medical prosthesis, in particular to an additively manufactured nickel-titanium alloy femoral stem prosthesis and a preparation method thereof. Background technique [0002] Artificial hip replacement is an effective method for the treatment of severe hip joint diseases (such as intertrochanteric fractures, bone tumors, etc.). The artificial hip joint consists of a femoral stem, a femoral head, an acetabular cup seat, and a bushing between the femoral head and the acetabular cup seat. [0003] The traditional femoral stem prosthesis generally uses metal materials such as titanium alloy (elastic modulus>110GPa), cobalt chromium molybdenum (elastic modulus>200GPa) or stainless steel (elastic modulus>180GPa), which is similar to the elastic modulus of human bones (10- 30GPa) is quite different, and the contact parts between the two have a stress shielding effect due to the difference in modulus, re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/36A61F2/30B22F3/11B22F5/10B33Y10/00B33Y80/00C22C19/03
CPCA61F2/36A61F2/3662A61F2/30942C22C19/03B22F3/11B22F5/10B33Y10/00B33Y80/00A61F2002/30011A61F2002/30784A61F2002/30943A61F2310/00023A61F2310/00071A61F2002/30985A61F2002/3097Y02P10/25
Inventor 王协彬席瑞姜浩张志辉于征磊李德强
Owner SHANDONG UNIV
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