FR2319487A1 - Metal coating of controlled porosity and thickness - applied to metal substrate, esp. for use as human heart valve prosthesis - Google Patents

Metal coating of controlled porosity and thickness - applied to metal substrate, esp. for use as human heart valve prosthesis

Info

Publication number
FR2319487A1
FR2319487A1 FR7523732A FR7523732A FR2319487A1 FR 2319487 A1 FR2319487 A1 FR 2319487A1 FR 7523732 A FR7523732 A FR 7523732A FR 7523732 A FR7523732 A FR 7523732A FR 2319487 A1 FR2319487 A1 FR 2319487A1
Authority
FR
France
Prior art keywords
adhesive
heart valve
human heart
esp
valve prosthesis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7523732A
Other languages
French (fr)
Other versions
FR2319487B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Hospital Supply Corp
Original Assignee
American Hospital Supply Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Hospital Supply Corp filed Critical American Hospital Supply Corp
Priority to FR7523732A priority Critical patent/FR2319487A1/en
Publication of FR2319487A1 publication Critical patent/FR2319487A1/en
Application granted granted Critical
Publication of FR2319487B1 publication Critical patent/FR2319487B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
    • B22F7/004—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature comprising at least one non-porous part
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2409—Support rings therefor, e.g. for connecting valves to tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2421—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with non-pivoting rigid closure members
    • A61F2/2424—Ball valves

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Cardiology (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Transplantation (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Prostheses (AREA)

Abstract

The substrate is coated with adhesive on those zones where coating is required, and metal powder is deposited on the adhesive. This is followed by sintering to bond metals and burn off the adhesive, leaving interconnected voids round metal particles. The adhesive is pref. applied by a brush followed by the metal powder, the surplus powder being blown off by a gas so only a single layer of particles is formed. Used esp. for a human heart valve prosthesis, where body tissue can grow into the interconnecting pores. This reduces the possibility of thrombosis occurring in the year after implantation of the prosthesis.
FR7523732A 1975-07-30 1975-07-30 Metal coating of controlled porosity and thickness - applied to metal substrate, esp. for use as human heart valve prosthesis Granted FR2319487A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7523732A FR2319487A1 (en) 1975-07-30 1975-07-30 Metal coating of controlled porosity and thickness - applied to metal substrate, esp. for use as human heart valve prosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7523732A FR2319487A1 (en) 1975-07-30 1975-07-30 Metal coating of controlled porosity and thickness - applied to metal substrate, esp. for use as human heart valve prosthesis

Publications (2)

Publication Number Publication Date
FR2319487A1 true FR2319487A1 (en) 1977-02-25
FR2319487B1 FR2319487B1 (en) 1979-06-15

Family

ID=9158505

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7523732A Granted FR2319487A1 (en) 1975-07-30 1975-07-30 Metal coating of controlled porosity and thickness - applied to metal substrate, esp. for use as human heart valve prosthesis

Country Status (1)

Country Link
FR (1) FR2319487A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
FR2319487B1 (en) 1979-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse