[go: up one dir, main page]

US3820534A - Device for promoting the formation of bone substance - Google Patents

Device for promoting the formation of bone substance Download PDF

Info

Publication number
US3820534A
US3820534A US00241728A US24172872A US3820534A US 3820534 A US3820534 A US 3820534A US 00241728 A US00241728 A US 00241728A US 24172872 A US24172872 A US 24172872A US 3820534 A US3820534 A US 3820534A
Authority
US
United States
Prior art keywords
bone
accordance
marrow nail
coil
electrode
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.)
Expired - Lifetime
Application number
US00241728A
Inventor
W Kraus
F Lechner
H Viehbach
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19712116869 external-priority patent/DE2116869C2/en
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3820534A publication Critical patent/US3820534A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements
    • 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
    • A61F2/30—Joints
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/40—Applying electric fields by inductive or capacitive coupling ; Applying radio-frequency signals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N2/00—Magnetotherapy
    • A61N2/02—Magnetotherapy using magnetic fields produced by coils, including single turn loops or electromagnets
    • 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
    • A61F2/28—Bones
    • A61F2002/2821—Bone stimulation by electromagnetic fields or electric current for enhancing ossification

Definitions

  • a splint for fixing a bone structure in position is in the fonn of a marrow nail, of which at least a part is con- 1 structed to serve as an electrode.
  • the electrode is connected to a first terminal end of a pick-up coil.
  • the second terminal end of the coil is connected to a sec- 0nd electrode which may be also attached to the marrow nail or is fixed to a belt-like carrier adapted to be tightened around the bone structure.
  • the present invention relates to a device for promting the formation of bone substance adjacent to the bone of a living organism, comprising a splint for fixing the bone in position and provided with at least one pick-up coil, whose two terminal ends are connected with at least one electrode adapted for application to the bone structure.
  • the part of the marrow nail serving as an electrode is provided with at least one counter-electrode, which is arranged on a belt-like carrier, which has a closure'whieh enables it to exert a circumferential force on the bone or its part into which the marrow nail has been introduced.
  • FIG. 1 shows a marrow nail inserted into a broken bone, in accordance with one embodiment of the invention.
  • FIG. 2 shows a marrow nail arranged in a fractured bone in accordance with a second embodiment of the invention.
  • FIG. 3 shows a partly cut-away view of the marrow nail in accordance with FIG. 2.
  • FIG. 4 is a partial view of a fractured bone with a device in accordance with a further embodiment of the invention.
  • FIG. 5 is a plan view of a pick-up coil of the device in accordance with FIG. 4.
  • FIG. 6 shows on an enlarged scale the zone denoted Z in FIG. 4.
  • FIG. 7a is a view of a cerclage for a device of the type indicated in FIG. 4.
  • FIG. 7b is a front view of the fastener used with the cerclage of FIG. 7a.
  • FIG. 7c is a side view of the fastener of FIG. 7b.
  • FIG. 7d is a side view of a counter-electrode of FIG.
  • FIG. 8 is a perspective view of a cerclage in accordance with FIG. 7 arranged on a fractured bone.
  • FIG. 9 shows a cross-section of the arrangement shown in FIG. 8.
  • FIGS. 10a and 10b show part of a hip-joint prosthesis from the broad and narrow sides respectivelylin accordance. with an embodiment of the invention.
  • FIGS. 1 la and 11b are views generally corresponding to FIGS. 10a and 10b of a further embodiment in accordance with the invention.
  • FIG. I shows a fractured human femur, which is fixed in position by means of a Kt'mtscher or marrow nail 14 inserted into the marrow cavity 12 which has been bored out.
  • marrow nail 14 is made in a conventional manner of a piece of sheet metal of cobalt-chrome alloy, which is bent so as to have the shape of a slotted tube.
  • a middle section of the marrow nail is provided with insulating material 16, on which two wire or strip-like electrodes 18 and 20 are arranged.
  • the electrodes are preferably placed on opposite sides of the marrow nail adjacent to the fractures 22. They are connected with the ends of a wire winding of a pick-up coil 24, which is arranged on a magnetic core 26 inside the marrow nail l4.
  • the pick-up coil is placed in an alternating magnetic field, which is produced by means of a cylindrical coil 28 for example, as described in patent application Ser. No. 26,809, now US. Pat. No. 3,745,995 issued on July I7, 1973 to Werner Kraus.
  • the alternating magnetic field should have a low frequency, for example up to approximately 60 Hz and its pulses should not have steep flanks.
  • FIG. 2 shows a further embodiment of a marrow nail in accordance with the invention.
  • This marrow nail 14 again has an insulated section 16', on which two substantially semi-cylindrical electrodes 18', 20 are arranged which are insulated from each other and from the actual marrow nail 14'.
  • the electrodes have electrically conducting surfaces, which extend over the greater part of the length of the marrow nail l4.
  • the marrow nail 14 itself is tubular and consists of a non-ferromagnetic material. In its interior a pickup coil 24' is arranged and the ends of its wire winding are connected with the electrodes 18 and 20 respectively.
  • the whole marrow nail 14" serves as an electrode and cooperates with counter-electrodes 20a to 20d, which are arranged on the outer surface of the fractured bone 10 and are held in position by beltlike straps 30.
  • the marrow nail 14" is connected via a conductor 32 with the one terminal of a pick-up coil 24", whose other terminal is connected with the electrodes a and 20d via suitable lines.
  • the pick-up coil 24" is shown in plan view in FIG. 5. It can be embedded in a fastener 34, which serves to hold together the overlapping ends of the belt'like straps 30.
  • the straps 30 are ribbed on both sides as is shown in FIG.
  • FIG. 7 shows a further embodiment of a beltlike electrode carrier.
  • the electrode carrier constructed in the form of a cerclage consists of a part 40.
  • the part 40 of the plastics material has a relatively broad initial part 42, which is provided with a hole 44 and cooperates with a fastener 46 in the form of an U-shaped piece of metal sheet, which is held by means of a screw (not shown) extending through the hole 44 and a corresponding hole in the piece of sheet metal 46.
  • the initial part 42 is connected with two narrow belt-like parts 48 which are preferably ribbed in the manner shown in FIG. 6.
  • sliding electrode arrangements 50 are arranged, of which one is shown in section at the bottom of FIG. 7 on the right-hand side.
  • the electrode arrangements 50 comprise the actual electrode 20", which rests in a retaining means 52, made of plastics material, which can be slid on the associated belt-like part 48. As long as the belt-like parts are not under tension the electrode arrangement 50 can be displaced in the longitudinal direction of the belt-like parts 48. When the electrode is tightened the holding means 52 slides into the ribs and the electrode becomes fixed at the position intended.
  • FIGS. 8 and 9 shows a device in accordance with FIG. 7 tightened around a bone.
  • the pick-up coil 24 connected with the electrodes is fixed in the fastener device 46. It would naturally be possible for the pickup coil to be arranged in the interior of the marrow nail 14 holding the bone in position, as has ben explained with reference to FIGS. 1 and 3.
  • the marrow nail can also be made of a material which is absorbed by the body. for example animal bone freed of protein. In this case no separate insulating device for bringing about electrical separation of the electrodes would have to be provided.
  • FIGS. 10 and 11 show two embodiments or marrow nails which form part of hip joint prosthesis, that is to say an artificial human hip-joint.
  • the hip joint prosthesis in accordance with FIG. 10 is constructed using a conventional cobalt-chrome alloy and includes a substantially spherical head 60, which adjoins the dagger-like shank 62 (FIG. 10) which is inserted in a conventional manner from above into the open marrow cavity to replace the injured or diseased hip-joint in a conventional manner.
  • the replacement of the head of the femur is carried out more particularly in the case of fractures of the neck of the femur in the case of elderly persons and in advanced cases of Arthrosis deformans, a degenerative joint and bone disease.
  • the hip joint prosthesis has been fixed in position in the marrow cavity using a particular cement.
  • a substantial disadvantage of this manner of fixation of the prosthesis in the femur resides in that the further decomposition of the bone is not retarded by the replacement metal joint so that in the course of time there is a loss of frictional connection between the bone and the cement.
  • the prosthesis then becomes loose and this leads to impairment of the gait and pain.
  • protheses have involved a further operation being carried out as a matter of course after some years.
  • the shank 62 (FIG. 10) forming the marrow nail of the hip-joint prosthesis comprises for this purpose a pickup coil 24, which is preferably provided with a magnetizeable core of magnetically soft material.
  • the shank 62 can for this purpose comprise a channel-like recess whose opening 64 is only shown diagrammatically in FIG. 10.
  • the oneend of the wire winding of the pickup coil is connected with an electrode 18m which is insulated from the shank 62 and is arranged approximately in the center of the shank, while the other end of the wire winding is connectd with two electrodes 18n and 18p, which are insulated from the shank 62 and are arranged at its upper and lower end respectively.
  • elongated strip-like electrodes are arranged on the two opposite broad sides of the shank 62', only one electrode, 18', being shown in FIG. 11.
  • the electrodes are insulated again from the shank 62' which is made of metal and are connected with the ends of the wire winding of a pick-up coil (not shown) which is accommodated in the shank 62.
  • the shank can itself be used as an electrode and cooperate with counter-electrodes, which are arranged in an insulated fashion in the shank or are located on the cerclages extending round the bone, as was described with reference to FIGS. 4 to 9.
  • alternating currents are induced in the pick-up coil as explained in the abovementioned patent application. These alternating currents encourage the formation of bone and vessels, and newly formed bone substance grows around the shank 62 or 62', respectively, so that a firm fit is ensured.
  • the alternating magnetic field inducing the alternating currents also contributes to bone and vessel formation. For the fixation of the prosthesis therefore at the most only small quantities of cement are necessary.
  • the shape of .the shank 62 and 62' which has alterattachment of the prosthesis nating expanded and drawn-in parts, encourages a firm attachment in the, marrow cavity of the bone owing to bone growth;
  • v r v 1 A device for assisting in formation of bone substance adjacentto the bone of a living organism, coinprising: a splint for fixing the boneinposition and-including a marrow nail;'at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said vcoil an a.c. current;
  • an electrode, assembly connected to said terminals-and adapted to be connected to the bone; and, the marrow nail having an elongated main part on which there is embeddedalong one surface thereof at least a portion of the electrode assembly which is insulated at least a with respect to the main part and has an exposed electrically conducting surface.
  • the electrode, assembly includes two electrodes, insulated from each other, and embedded in opposite sides of the main part.
  • a device in accordance with claim 2 in which the electrodes have elongated surfaces, which run along he-longitudinal axisof the main part of the marrow 1 [4.
  • a device for assisting information of bone substance adjacent to the bone of a living organism comprising: a splint for fixing the bone in position and including a marrow nail; at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said coil an ac. current;
  • an electrode assembly connected to said terminals and adapted to be connected to the bone; and, at least a portion of the marrow nail forming at least a portion of the electrode assembly; wherein the electrode assembly includes at least one counter-electrode which is mounted on a belt-like carrier, the part of the marrow nail forming a portion of the electrode assembly is adapted to cooperate with said counter-electrode, and
  • the carrier includes a fastener for tightening it around the fractured bone encompassing the marrow nail.
  • the belt-like carrier comprises a straplike part which on .both sides is ribbed in the transverse direction
  • the electrode assembly includes a plurality of electrodes which are arranged spaced apart along the longitudinal axis of the marrow'nail.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Magnetic Treatment Devices (AREA)
  • Surgical Instruments (AREA)
  • Electrotherapy Devices (AREA)
  • Prostheses (AREA)

Abstract

A splint for fixing a bone structure in position is in the form of a marrow nail, of which at least a part is constructed to serve as an electrode. The electrode is connected to a first terminal end of a pick-up coil. The second terminal end of the coil is connected to a second electrode which may be also attached to the marrow nail or is fixed to a belt-like carrier adapted to be tightened around the bone structure.

Description

United States Patent 1191 Kraus et al.
[ June 28, 1974 DEVICE FOR PROMOTING THE C FORMATION OF BONE SUBSTANCE Foreign Application Priority Data Apr. 6, I97] Germany.... 21 I686) us. 01. 128/82.l, 3/1 Int. Cl. A6ln Fieldof Search 128/821, 92; 3/1 1 References Cited UNITED STATES PATENTS 11/1971 Bokros l28/9 2 B1 6/1972 Bosacco 128/92 D OTHER PUBLICATIONS Effects of Electric Currents on Bone in Vivo, by Bassett et al., Nature, Nov. 14, 1964, pp. 652-654.
The Effect of Direct Current 0n Bone, by F riedenberg et al., Surgery, Gynecology & Obstetrics, July, 1968, pp. 97-102.
Bioelectric Potentials in Bone, by Friedenberg et al., Journal of Bone & Joint Surgery, July, 1966, pp. 915-923.
Primary ExaminerRichard A. Gaudet Assistant ExaminerJ. Yasko Attorney, Agent, or Firm-Spencer & Kaye [571 ABSTRACT A splint for fixing a bone structure in position is in the fonn of a marrow nail, of which at least a part is con- 1 structed to serve as an electrode. The electrode is connected to a first terminal end of a pick-up coil. The second terminal end of the coil is connected to a sec- 0nd electrode which may be also attached to the marrow nail or is fixed to a belt-like carrier adapted to be tightened around the bone structure.
129 13; REQWJPA JEEEQ PATENTED JUN? 8 I974 SHEET 5 0F 6 Fig.10b
Fig.10c1
PATENTEDJUN28 I974 sum 6 or 6 Fig.1]
Fig.11c1
REFERENCE TO COPENDING APPLICATION The present application describes a further develop ment of the invention described in Application Ser. No. 26,809,, now US. Pat. No. 3,745,995, issued July 17, I973.
BACKGROUND OF INVENTION 1. Field to which invention relates The present invention relates to a device for promting the formation of bone substance adjacent to the bone of a living organism, comprising a splint for fixing the bone in position and provided with at least one pick-up coil, whose two terminal ends are connected with at least one electrode adapted for application to the bone structure.
2. The prior art The fixing in position of a broken bone by means of a splint with a metal plate screwed onto the outer surface of the bone has the disadvantage that the metal plate brings about an unnatural distribution of forces in the bone during healing and this may lead to refracture of the bone. The plate screwed on the bone practically cuts out the curative physiological stress and load on the bone during healing. Since at the present time comminuted fractures are becoming more and more numerous, it is often no longer possible to fix small bone fragments in position by means of plates and screws so that as a result osteogenesis is rendered uncertain.
Therefore, for some time a so-called Kiintscher or marrow nail has been employed which is inserted into a hole bored into the marrow cavity. The endosteum and the blood vessels contained in it are destroyed in this method so that the healing process is delayed. As a result in the case of multiple or chip fractures such a marrow nail can be used only to a very limited extent as it does not support the small bone fragments in the case of such chip fractures. Although there has been a previous proposal to fix such cips in position by socalled cerclages, that is to say by means of wires which are laid around the chips and then drawn together, the
substantial forces exerted by the wires on the bone lead to a contraction of the periosteum and block the blood vessels contained in it. Such wire cerclages cannot ensure that proper osteosynthesis takes place.
SUMMARY OF INVENTION invention the part of the marrow nail serving as an electrode is provided with at least one counter-electrode, which is arranged on a belt-like carrier, which has a closure'whieh enables it to exert a circumferential force on the bone or its part into which the marrow nail has been introduced.
Further developments of the invention will be described in what follows.
LIST OF SEVERAL VIEWS OF DRAWINGS Embodiments of the invention will now be described with reference to the accompanying drawings in more detail.
FIG. 1 shows a marrow nail inserted into a broken bone, in accordance with one embodiment of the invention.
FIG. 2 shows a marrow nail arranged in a fractured bone in accordance with a second embodiment of the invention.
FIG. 3 shows a partly cut-away view of the marrow nail in accordance with FIG. 2.
FIG. 4 is a partial view of a fractured bone with a device in accordance with a further embodiment of the invention.
FIG. 5 is a plan view of a pick-up coil of the device in accordance with FIG. 4.
FIG. 6 shows on an enlarged scale the zone denoted Z in FIG. 4.
FIG. 7a is a view of a cerclage for a device of the type indicated in FIG. 4.
FIG. 7b is a front view of the fastener used with the cerclage of FIG. 7a.
FIG. 7c is a side view of the fastener of FIG. 7b.
FIG. 7d is a side view of a counter-electrode of FIG.
FIG. 8 is a perspective view of a cerclage in accordance with FIG. 7 arranged on a fractured bone.
FIG. 9 shows a cross-section of the arrangement shown in FIG. 8.
FIGS. 10a and 10b show part of a hip-joint prosthesis from the broad and narrow sides respectivelylin accordance. with an embodiment of the invention.
FIGS. 1 la and 11b are views generally corresponding to FIGS. 10a and 10b of a further embodiment in accordance with the invention.
DESCRIPTION OF PREFERRED EMBODIMENTS As an example of a fractured bone FIG. I shows a fractured human femur, which is fixed in position by means of a Kt'mtscher or marrow nail 14 inserted into the marrow cavity 12 which has been bored out. The
marrow nail 14 is made in a conventional manner of a piece of sheet metal of cobalt-chrome alloy, which is bent so as to have the shape of a slotted tube. A middle section of the marrow nail is provided with insulating material 16, on which two wire or strip- like electrodes 18 and 20 are arranged. The electrodes are preferably placed on opposite sides of the marrow nail adjacent to the fractures 22. They are connected with the ends of a wire winding of a pick-up coil 24, which is arranged on a magnetic core 26 inside the marrow nail l4. During treatment of the patient the pick-up coil is placed in an alternating magnetic field, which is produced by means of a cylindrical coil 28 for example, as described in patent application Ser. No. 26,809, now US. Pat. No. 3,745,995 issued on July I7, 1973 to Werner Kraus. In particular the alternating magnetic field should have a low frequency, for example up to approximately 60 Hz and its pulses should not have steep flanks.
FIG. 2 shows a further embodiment of a marrow nail in accordance with the invention. This marrow nail 14 again has an insulated section 16', on which two substantially semi-cylindrical electrodes 18', 20 are arranged which are insulated from each other and from the actual marrow nail 14'. The electrodes have electrically conducting surfaces, which extend over the greater part of the length of the marrow nail l4.
The marrow nail 14 itself is tubular and consists of a non-ferromagnetic material. In its interior a pickup coil 24' is arranged and the ends of its wire winding are connected with the electrodes 18 and 20 respectively.
In the case of the embodiment in accordance with FIGS. 4, 5, and 6 the whole marrow nail 14" serves as an electrode and cooperates with counter-electrodes 20a to 20d, which are arranged on the outer surface of the fractured bone 10 and are held in position by beltlike straps 30. The marrow nail 14" is connected via a conductor 32 with the one terminal of a pick-up coil 24", whose other terminal is connected with the electrodes a and 20d via suitable lines. The pick-up coil 24" is shown in plan view in FIG. 5. It can be embedded in a fastener 34, which serves to hold together the overlapping ends of the belt'like straps 30. Preferably the straps 30 are ribbed on both sides as is shown in FIG. 6, so that firstly a slipping of the overlapping ends in relation to each other is prevented and secondly vessels, which run between the straps 30 and the bone 10, can slip into the grooves between the ribs and are not pinched. FIG. 7 shows a further embodiment of a beltlike electrode carrier. The electrode carrier constructed in the form of a cerclage consists of a part 40.
of a plastics material, for example polytetrafluoroethylene, which can be reinforced by wires or glass fibers. The part 40 of the plastics material has a relatively broad initial part 42, which is provided with a hole 44 and cooperates with a fastener 46 in the form of an U-shaped piece of metal sheet, which is held by means of a screw (not shown) extending through the hole 44 and a corresponding hole in the piece of sheet metal 46. The initial part 42 is connected with two narrow belt-like parts 48 which are preferably ribbed in the manner shown in FIG. 6. On the belt-like or straplike parts 48 sliding electrode arrangements 50 are arranged, of which one is shown in section at the bottom of FIG. 7 on the right-hand side. The electrode arrangements 50 comprise the actual electrode 20", which rests in a retaining means 52, made of plastics material, which can be slid on the associated belt-like part 48. As long as the belt-like parts are not under tension the electrode arrangement 50 can be displaced in the longitudinal direction of the belt-like parts 48. When the electrode is tightened the holding means 52 slides into the ribs and the electrode becomes fixed at the position intended.
FIGS. 8 and 9 shows a device in accordance with FIG. 7 tightened around a bone. The pick-up coil 24 connected with the electrodes is fixed in the fastener device 46. It would naturally be possible for the pickup coil to be arranged in the interior of the marrow nail 14 holding the bone in position, as has ben explained with reference to FIGS. 1 and 3.
The marrow nail can also be made of a material which is absorbed by the body. for example animal bone freed of protein. In this case no separate insulating device for bringing about electrical separation of the electrodes would have to be provided.
FIGS. 10 and 11 show two embodiments or marrow nails which form part of hip joint prosthesis, that is to say an artificial human hip-joint.
The hip joint prosthesis in accordance with FIG. 10 is constructed using a conventional cobalt-chrome alloy and includes a substantially spherical head 60, which adjoins the dagger-like shank 62 (FIG. 10) which is inserted in a conventional manner from above into the open marrow cavity to replace the injured or diseased hip-joint in a conventional manner.
The replacement of the head of the femur is carried out more particularly in the case of fractures of the neck of the femur in the case of elderly persons and in advanced cases of Arthrosis deformans, a degenerative joint and bone disease. Up till now the hip joint prosthesis has been fixed in position in the marrow cavity using a particular cement. A substantial disadvantage of this manner of fixation of the prosthesis in the femur resides in that the further decomposition of the bone is not retarded by the replacement metal joint so that in the course of time there is a loss of frictional connection between the bone and the cement. The prosthesis then becomes loose and this leads to impairment of the gait and pain. In the past such protheses have involved a further operation being carried out as a matter of course after some years.
In the case of the hip-joint prothesis in accordance with the invention as shown in FIGS. 10 and 11 the attachment of the prosthesis to the bone substance is promoted by the influence of low frequency alternating currents which gradually vary.
The shank 62 (FIG. 10) forming the marrow nail of the hip-joint prosthesis comprises for this purpose a pickup coil 24, which is preferably provided with a magnetizeable core of magnetically soft material. The shank 62 can for this purpose comprise a channel-like recess whose opening 64 is only shown diagrammatically in FIG. 10. The oneend of the wire winding of the pickup coil is connected with an electrode 18m which is insulated from the shank 62 and is arranged approximately in the center of the shank, while the other end of the wire winding is connectd with two electrodes 18n and 18p, which are insulated from the shank 62 and are arranged at its upper and lower end respectively.
In the case of the embodiment in accordance with FIG. 11 elongated strip-like electrodes are arranged on the two opposite broad sides of the shank 62', only one electrode, 18', being shown in FIG. 11. The electrodes are insulated again from the shank 62' which is made of metal and are connected with the ends of the wire winding of a pick-up coil (not shown) which is accommodated in the shank 62.
Alternatively the shank can itself be used as an electrode and cooperate with counter-electrodes, which are arranged in an insulated fashion in the shank or are located on the cerclages extending round the bone, as was described with reference to FIGS. 4 to 9.
After the hip-joint prosthesis in accordance with FIG. 10 or FIG. 11 has been introduced into the marrow cavity of the femur, alternating currents are induced in the pick-up coil as explained in the abovementioned patent application. These alternating currents encourage the formation of bone and vessels, and newly formed bone substance grows around the shank 62 or 62', respectively, so that a firm fit is ensured. The alternating magnetic field inducing the alternating currents also contributes to bone and vessel formation. For the fixation of the prosthesis therefore at the most only small quantities of cement are necessary.
nail. a
, -This subsequent treatment then brings about growth leading to a firm renewed to the bone.
The shape of .the shank 62 and 62', which has alterattachment of the prosthesis nating expanded and drawn-in parts, encourages a firm attachment in the, marrow cavity of the bone owing to bone growth;
Whatwe claim is: v r v 1. A device for assisting in formation of bone substance adjacentto the bone of a living organism, coinprising: a splint for fixing the boneinposition and-including a marrow nail;'at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said vcoil an a.c. current;
, an electrode, assembly connected to said terminals-and adapted to be connected to the bone; and, the marrow nail having an elongated main part on which there is embeddedalong one surface thereof at least a portion of the electrode assembly which is insulated at least a with respect to the main part and has an exposed electrically conducting surface.
2.vAdevice in accordance with claim 1, wherein the electrode, assembly includes two electrodes, insulated from each other, and embedded in opposite sides of the main part.
3. A device in accordance with claim 2,in whichthe electrodes have elongated surfaces, which run along he-longitudinal axisof the main part of the marrow 1 [4. A device in accordance with claim 1, wherein the nail, which is made of non-magnetic material.
5. A device in accordance with claim 1, wherein the marrow nail forms a part of a femur prosthesis and at therend has a hip-joint femurfhead, or a femur neck prosthesis V v 6. device in accordance with claim Sywherein the marrow nail has alternating expanded and drawn-in "portions along its longitudinal axis.
7. A device for assisting information of bone substance adjacent to the bone of a living organism, comprising: a splint for fixing the bone in position and including a marrow nail; at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said coil an ac. current;
an electrode assembly connected to said terminals and adapted to be connected to the bone; and, at least a portion of the marrow nail forming at least a portion of the electrode assembly; wherein the electrode assembly includes at least one counter-electrode which is mounted on a belt-like carrier, the part of the marrow nail forming a portion of the electrode assembly is adapted to cooperate with said counter-electrode, and
, the carrier includes a fastener for tightening it around the fractured bone encompassing the marrow nail.
8. A device in accordance with claim 7, wherein that I the belt-like carrier comprises a straplike part which on .both sides is ribbed in the transverse direction,
, 9. A device in accordance with claim 7, wherein the carrier has a broad initial part adapted to cooperate "with the fastener and this broad part adjoins two nar "row strap-like parts which are spaced apart.
10. A device in accordance with claim 7, wherein the pick-up coil is accommodated in the fastener.
l 1. A-device in'acco'rdance with claim 7, wherein the counter electrode is arranged on the belt-like carrier so pick-up coil is arranged in the main part of the marrow that it can be slid along the longitudinal axis of the carrier. v I
12. A device in accordance with claim 1, wherein the electrode assembly includes a plurality of electrodes which are arranged spaced apart along the longitudinal axis of the marrow'nail.

Claims (12)

1. A device for assisting in formation of bone substance adjacent to the bone of a living organism, comprising: a splint for fixing the bone in position and including a marrow nail; at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said coil an a.c. current; an electrode assembly connected to said terminals and adapted to be connected to the bone; and, the marrow nail having an elongated main part on which there is embedded along one surface thereof at least a portion of the electrode assembly which is insulated at least with respect to the main part and has an exposed electrically conducting surface.
2. A device in accordance with claim 1, wherein the electrode assembly includes two electrodes, insulated from each other, and embedded in opposite sideS of the main part.
3. A device in accordance with claim 2, in which the electrodes have elongated surfaces, which run along the longitudinal axis of the main part of the marrow nail.
4. A device in accordance with claim 1, wherein the pick-up coil is arranged in the main part of the marrow nail, which is made of non-magnetic material.
5. A device in accordance with claim 1, wherein the marrow nail forms a part of a femur prosthesis and at the end has a hip-joint femur head, or a femur neck prosthesis.
6. A device in accordance with claim 5, wherein the marrow nail has alternating expanded and drawn-in portions along its longitudinal axis.
7. A device for assisting in formation of bone substance adjacent to the bone of a living organism, comprising: a splint for fixing the bone in position and including a marrow nail; at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said coil an a.c. current; an electrode assembly connected to said terminals and adapted to be connected to the bone; and, at least a portion of the marrow nail forming at least a portion of the electrode assembly; wherein the electrode assembly includes at least one counter-electrode which is mounted on a belt-like carrier, the part of the marrow nail forming a portion of the electrode assembly is adapted to cooperate with said counter-electrode, and the carrier includes a fastener for tightening it around the fractured bone encompassing the marrow nail.
8. A device in accordance with claim 7, wherein that the belt-like carrier comprises a straplike part which on both sides is ribbed in the transverse direction.
9. A device in accordance with claim 7, wherein the carrier has a broad initial part adapted to cooperate with the fastener and this broad part adjoins two narrow strap-like parts which are spaced apart.
10. A device in accordance with claim 7, wherein the pick-up coil is accommodated in the fastener.
11. A device in accordance with claim 7, wherein the counter electrode is arranged on the belt-like carrier so that it can be slid along the longitudinal axis of the carrier.
12. A device in accordance with claim 1, wherein the electrode assembly includes a plurality of electrodes which are arranged spaced apart along the longitudinal axis of the marrow nail.
US00241728A 1971-04-06 1972-04-06 Device for promoting the formation of bone substance Expired - Lifetime US3820534A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712116869 DE2116869C2 (en) 1970-04-06 1971-04-06 Bone and biological tissue growth promotion appts. - uses flat coil for application of LF current from generator

Publications (1)

Publication Number Publication Date
US3820534A true US3820534A (en) 1974-06-28

Family

ID=5804066

Family Applications (2)

Application Number Title Priority Date Filing Date
US00241728A Expired - Lifetime US3820534A (en) 1971-04-06 1972-04-06 Device for promoting the formation of bone substance
US241727A Expired - Lifetime US3890953A (en) 1971-04-06 1972-04-06 Electrical apparatus generating a low frequency, alternating magnetic field for promoting the growth of bone and other body tissues

Family Applications After (1)

Application Number Title Priority Date Filing Date
US241727A Expired - Lifetime US3890953A (en) 1971-04-06 1972-04-06 Electrical apparatus generating a low frequency, alternating magnetic field for promoting the growth of bone and other body tissues

Country Status (6)

Country Link
US (2) US3820534A (en)
JP (3) JPS5839547B1 (en)
AT (2) AT316729B (en)
CH (2) CH539438A (en)
GB (2) GB1393701A (en)
SE (3) SE387240B (en)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964473A (en) * 1972-09-21 1976-06-22 Telectronics Pty. Limited Bone prosthesis
US4195367A (en) * 1976-03-19 1980-04-01 Werner Kraus Long-term endoprosthesis
US4216548A (en) * 1976-03-19 1980-08-12 Werner Kraus Long-term endoprosthesis
US4306564A (en) * 1977-09-22 1981-12-22 Werner Kraus Electrification attachment for an osteo-synthesis implantate
US4549547A (en) * 1982-07-27 1985-10-29 Trustees Of The University Of Pennsylvania Implantable bone growth stimulator
US4611597A (en) * 1982-11-03 1986-09-16 Werner Kraus Implantable device for the stimulation of bone growth
EP0781532A2 (en) 1995-11-30 1997-07-02 Christoph Rehberg Implantable device with inner electrode
US6018094A (en) * 1995-02-06 2000-01-25 Biomedical Enterprises, Inc. Implant and insert assembly for bone and uses thereof
US6143035A (en) * 1999-01-28 2000-11-07 Depuy Orthopaedics, Inc. Implanted bone stimulator and prosthesis system and method of enhancing bone growth
WO2001095817A1 (en) * 2000-06-13 2001-12-20 Hyde Edward R Jr Magnetic array implant and prosthesis
US6387096B1 (en) * 2000-06-13 2002-05-14 Edward R. Hyde, Jr. Magnetic array implant and method of treating adjacent bone portions
WO2002102457A1 (en) * 2001-06-14 2002-12-27 Georges Vanroy Apparatus for applying an electromagnetic field to a living body
US20030187510A1 (en) * 2001-05-04 2003-10-02 Hyde Edward R. Mobile bearing prostheses
US20030195633A1 (en) * 2001-05-04 2003-10-16 Hyde Edward R. Magnetic array implant and prosthesis insert
EP1371388A2 (en) * 1990-05-04 2003-12-17 Bio-Magnetic Therapy Systems, Inc. Apparatus for treating a body organ with magnetic field
US20040024400A1 (en) * 1994-05-27 2004-02-05 Michelson Gary Karlin Method for the delivery of electrical current to promote bone growth between adjacent bone masses
WO2005044375A1 (en) 2003-11-11 2005-05-19 Igea S.R.L. Electromagnetic field stimulator device for anatomic biophysical chondroprotection
US20060052782A1 (en) * 2004-06-07 2006-03-09 Chad Morgan Orthopaedic implant with sensors
US20060190080A1 (en) * 2005-02-04 2006-08-24 Intellistem Orthopaedic Implanted prosthetic device
US20100152864A1 (en) * 2008-12-15 2010-06-17 University Of Utah Osseointegrated implant with electrical stimulation
US20120165950A1 (en) * 2010-12-23 2012-06-28 Rainer Baumgart Implantable prosthesis for replacing a human hip or knee joint and the adjoining bone sections
US8679189B1 (en) * 2013-02-11 2014-03-25 Amendia Inc. Bone growth enhancing implant
EP2797525A4 (en) * 2011-12-27 2015-11-04 Richard Rogachefsky Orthopedic fixation device with magnetic field generator
US10335282B2 (en) 2016-02-09 2019-07-02 Richard A. Rogachefsky Magnetic joint replacement
US10838406B2 (en) 2013-02-11 2020-11-17 The Aerospace Corporation Systems and methods for the patterning of material substrates
US11596803B2 (en) 2018-08-02 2023-03-07 Richard A. Rogachefsky Orthopedic treatment device with electromagnetic field generator

Families Citing this family (123)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7422801U (en) * 1974-07-04 1977-04-07 Kraus, Werner, Dipl.-Ing., 8000 Muenchen Solenoil coil for an electromagnetic therapy device
US4056097A (en) * 1976-03-15 1977-11-01 Joachim Adolf Maass Contactless stimulus transducer
DE2619650C3 (en) * 1976-05-04 1985-06-05 Friedrichsfeld Gmbh, Steinzeug- Und Kunststoffwerke, 6800 Mannheim Dental implant
US4266532A (en) * 1976-11-17 1981-05-12 Electro-Biology, Inc. Modification of the growth, repair and maintenance behavior of living tissues and cells by a specific and selective change in electrical environment
US4315503A (en) * 1976-11-17 1982-02-16 Electro-Biology, Inc. Modification of the growth, repair and maintenance behavior of living tissues and cells by a specific and selective change in electrical environment
US4105017A (en) * 1976-11-17 1978-08-08 Electro-Biology, Inc. Modification of the growth repair and maintenance behavior of living tissue and cells by a specific and selective change in electrical environment
US4142521A (en) * 1976-12-23 1979-03-06 Hoffmann-La Roche Inc. Electrostatic soft tissue wound repair enhancement
US4154246A (en) * 1977-07-25 1979-05-15 Leveen Harry H Field intensification in radio frequency thermotherapy
US4186729A (en) * 1977-11-25 1980-02-05 Donald L. Morton & Associates Deep heating electrode
US4537181A (en) * 1978-12-05 1985-08-27 Hydromagnetics, Inc. Hydromagnetic apparatus for non-surgical in vivo removal of calcium deposits
DE3071892D1 (en) * 1980-10-03 1987-02-26 Henning Rosengart Electromedical treatment apparatus
US4506673A (en) * 1982-10-18 1985-03-26 Rorer Group Inc. Therapeutic treatment within joint capsules of the body
US5269746A (en) * 1982-12-20 1993-12-14 Jacobson Jerry I Therapeutic treatment of mammals for epilepsy and Parkinson's disease
US5366435A (en) * 1982-12-20 1994-11-22 Jacobson Jerry I Therapeutic treatment of mammals
JPS6024121A (en) * 1983-07-16 1985-02-06 林原　健 Enhancement of productibity of animal and vegetable
CA1192261A (en) * 1984-02-29 1985-08-20 David J. Stewart Magnetic biological device
EP0181053A3 (en) * 1984-09-12 1988-07-20 Irt, Inc. Pulse electro-magnetic field therapy device with auto biased circuit and method for use
US4602638A (en) * 1984-10-03 1986-07-29 Eddie Adams Apparatus and method for invasive electrical stimulation of bone fractures
US4889120A (en) * 1984-11-13 1989-12-26 Gordon Robert T Method for the connection of biological structures
US4616629A (en) * 1985-05-24 1986-10-14 Electro-Biology, Inc. Coil construction for electromagnetic treatment of an afflicted body region
US4672951A (en) * 1985-12-30 1987-06-16 Bio-Electric, Inc. Method and apparatus for treatment of biological tissue
US4865733A (en) * 1986-03-22 1989-09-12 Toa Nenryo Kogyo K.K. Cell separator device
US5000178A (en) * 1986-05-23 1991-03-19 Lti Biomedical, Inc. Shielded electromagnetic transducer
IL79788A (en) * 1986-08-21 1992-07-15 Zeev Kitov Therapeutic electrostatic device
US5100373A (en) * 1989-01-09 1992-03-31 Life Resonances, Inc. Techniques for controlling osteoporosis using non-invasive magnetic fields
US5067940A (en) * 1988-03-23 1991-11-26 Life Resonances, Inc. Method and apparatus for controlling the growth of cartilage
US5106361A (en) * 1988-03-23 1992-04-21 Life Resonances, Inc. Method and apparatus for controlling the growth of non-osseous non-cartilaginous solid connective tissue
US4932951A (en) * 1988-03-23 1990-06-12 Life Resonances, Inc. Method and apparatus for controlling tissue growth and an applied fluctuating magnetic field
US5215642A (en) * 1986-10-27 1993-06-01 Life Resonances, Inc. Improved method and apparatus for regulating transmembrane ion movement
US5087336A (en) * 1989-01-09 1992-02-11 Life Resonances, Inc. Methods and apparatus for regulating transmembrane ion movement utilizing selective harmonic frequencies and simultaneous multiple ion regulation
US5290409A (en) * 1986-10-27 1994-03-01 Life Resonances, Inc. Methods and apparatus for regulating transmembrane ion movement utilizing selective harmonic frequencies and simultaneous multiple ion regulation
US5160591A (en) * 1986-10-27 1992-11-03 Life Resonances, Inc. Methods and apparatus for regulating transmembrane ion movement utilizing selective harmonic frequencies and simultaneous multiple ion regulation
US4818697A (en) * 1986-10-27 1989-04-04 Life Resonances, Inc. Techniques for enhancing the permeability of ions through membranes
US5052997A (en) * 1987-04-10 1991-10-01 The United States Of America As Represented By The Secretary Of The Department Of Health And Human Services Diathermy coil
US5269745A (en) * 1988-03-23 1993-12-14 Life Resonances, Inc. Method and apparatus for controlling tissue growth with an applied fluctuating magnetic field
US5123898A (en) * 1988-03-23 1992-06-23 Life Resonances, Inc. Method and apparatus for controlling tissue growth with an applied fluctuating magnetic field
US5267939A (en) * 1989-01-09 1993-12-07 Life Resonances, Inc. Techniques for controlling osteoporosis using non-invasive magnetic fields
US5099756A (en) * 1989-06-01 1992-03-31 Harry H. Leveen Radio frequency thermotherapy
CA2021506A1 (en) * 1989-08-17 1991-02-18 Abraham R. Liboff Electromagnetic treatment therapy for stroke victims
US5077934A (en) * 1989-09-22 1992-01-07 Life Resonances, Inc. Method and apparatus for controlling plant growth
US5103806A (en) * 1990-07-31 1992-04-14 The Research Foundation Of State University Of New York Method for the promotion of growth, ingrowth and healing of bone tissue and the prevention of osteopenia by mechanical loading of the bone tissue
US5195940A (en) * 1991-06-20 1993-03-23 Iatromed, Inc. Method for increased production of growth factor in living tissue using an applied fluctuating magnetic field
DE69228531T2 (en) * 1992-02-20 1999-07-29 Neomedics, Inc., Budd Lake, N.J. Implantable bone growth stimulator
US5565005A (en) * 1992-02-20 1996-10-15 Amei Technologies Inc. Implantable growth tissue stimulator and method operation
US5524624A (en) * 1994-05-05 1996-06-11 Amei Technologies Inc. Apparatus and method for stimulating tissue growth with ultrasound
WO1995031939A1 (en) 1994-05-25 1995-11-30 Jacobson Jerry I Method and apparatus for ameliorating aging process
US5752911A (en) 1995-04-27 1998-05-19 Canedo; Luis E. Electromagnetic method of treatment of epilepsy and apparatus
US5880661A (en) * 1996-04-01 1999-03-09 Emf Therapeutics, Inc. Complex magnetic field generating device
US7789841B2 (en) 1997-02-06 2010-09-07 Exogen, Inc. Method and apparatus for connective tissue treatment
US5904659A (en) 1997-02-14 1999-05-18 Exogen, Inc. Ultrasonic treatment for wounds
US5968527A (en) * 1997-02-27 1999-10-19 Catholic University Of America, The Protection of living systems from the adverse effects of stress
US6083149A (en) * 1997-10-22 2000-07-04 Emf Therapeutics, Inc. Magnetic field device and method for inhibiting angiogenesis and retarding growth rates of tumors in mammals
US6007476A (en) * 1997-10-22 1999-12-28 Emf Therapeutics, Inc. Non-particle, non-photonic device and method for affecting angiogenesis
US6458071B1 (en) 1997-12-08 2002-10-01 Jerry I. Jacobson Method for electromagnetically restructuring water for organismic consumption
CA2295134A1 (en) 1998-01-15 1999-07-22 Amethyst Technologies, Inc. Improved pulsed electromagnetic energy treatment apparatus and method
US6099459A (en) * 1998-09-04 2000-08-08 Jacobson; Jerry I. Magnetic field generating device and method of generating and applying a magnetic field for treatment of specified conditions
US6463323B1 (en) 1998-11-12 2002-10-08 Em Vascular, Inc. Electrically mediated angiogenesis
US6149577A (en) * 1999-03-18 2000-11-21 Emf Therapeutics, Inc. Apparatus and method for creating a substantially contained, finite magnetic field useful for relieving the symptoms pain and discomfort associated with degenerative diseases and disorders in mammals
MXPA01011974A (en) 1999-05-21 2002-05-06 Exogen Inc Apparatus and method for ultrasonically and electromagnetically treating tissue.
US6200259B1 (en) * 1999-06-03 2001-03-13 Keith L. March Method of treating cardiovascular disease by angiogenesis
JP2003526403A (en) 1999-06-14 2003-09-09 エクソジェン インコーポレイテッド Method and kit for cavitation induced tissue treatment with low intensity ultrasound
US6556872B2 (en) 1999-08-24 2003-04-29 Ev Vascular, Inc. Therapeutic device and method for treating diseases of cardiac muscle
US6560489B2 (en) 1999-08-24 2003-05-06 Em Vascular, Inc. Therapeutic device and method for treating diseases of cardiac muscle
US6358196B1 (en) * 1999-12-29 2002-03-19 Reiza Rayman Magnetic retraction system for laparoscopic surgery and method of use thereof
US6620117B1 (en) 2000-01-20 2003-09-16 Connextech, L.L.C. Vibrational device for stimulating tissue and organs
DE10055686A1 (en) * 2000-11-03 2002-05-08 Biotronik Mess & Therapieg Device for influencing cell proliferation mechanisms in vessels of the human or animal body
US7429248B1 (en) 2001-08-09 2008-09-30 Exogen, Inc. Method and apparatus for controlling acoustic modes in tissue healing applications
NL1019206C2 (en) 2001-10-22 2003-04-23 Johannes Josephus Maria Cuppen Device and method for electromagnetic therapy.
US6733435B2 (en) 2002-03-08 2004-05-11 Canedo Luis Electromagnetic method of treatment of lesions associated with inadequate blood perfusion, partial denervation, tissue loss, pain, edema, inflammation and infection
US6884227B2 (en) 2002-11-08 2005-04-26 Juvent, Inc. Apparatuses and methods for therapeutically treating damaged tissues, bone fractures, osteopenia, or osteoporosis
US7207954B2 (en) * 2002-11-08 2007-04-24 Juvent, Inc. Apparatus and methods for therapeutically treating damaged tissues, bone fractures, osteopenia, or osteoporosis
US7985191B2 (en) * 2002-11-08 2011-07-26 American Medical Innovations, L.L.C. Apparatus and methods for therapeutically treating damaged tissues, bone fractures, osteopenia, or osteoporosis
US20050059153A1 (en) * 2003-01-22 2005-03-17 George Frank R. Electromagnetic activation of gene expression and cell growth
US7186209B2 (en) 2003-10-09 2007-03-06 Jacobson Jerry I Cardioelectromagnetic treatment
US20060034943A1 (en) * 2003-10-31 2006-02-16 Technology Innovations Llc Process for treating a biological organism
US20130218235A9 (en) * 2005-03-07 2013-08-22 Arthur A. Pilla Excessive fibrous capsule formation and capsular contracture apparatus and method for using same
US8961385B2 (en) * 2003-12-05 2015-02-24 Ivivi Health Sciences, Llc Devices and method for treatment of degenerative joint diseases with electromagnetic fields
US9433797B2 (en) 2003-12-05 2016-09-06 Rio Grande Neurosciences, Inc. Apparatus and method for electromagnetic treatment of neurodegenerative conditions
US9415233B2 (en) 2003-12-05 2016-08-16 Rio Grande Neurosciences, Inc. Apparatus and method for electromagnetic treatment of neurological pain
US7744524B2 (en) * 2003-12-05 2010-06-29 Ivivi Health Sciences, Llc Apparatus and method for electromagnetic treatment of plant, animal, and human tissue, organs, cells, and molecules
US9440089B2 (en) 2003-12-05 2016-09-13 Rio Grande Neurosciences, Inc. Apparatus and method for electromagnetic treatment of neurological injury or condition caused by a stroke
US9427598B2 (en) 2010-10-01 2016-08-30 Rio Grande Neurosciences, Inc. Method and apparatus for electromagnetic treatment of head, cerebral and neural injury in animals and humans
US9656096B2 (en) 2003-12-05 2017-05-23 Rio Grande Neurosciences, Inc. Method and apparatus for electromagnetic enhancement of biochemical signaling pathways for therapeutics and prophylaxis in plants, animals and humans
US20110112352A1 (en) * 2003-12-05 2011-05-12 Pilla Arthur A Apparatus and method for electromagnetic treatment
US10350428B2 (en) 2014-11-04 2019-07-16 Endonovo Therapetics, Inc. Method and apparatus for electromagnetic treatment of living systems
KR20070024533A (en) 2004-04-19 2007-03-02 아이비비 테크놀로지스, 아이엔씨. Electromagnetic Therapy Device and Method
US8043290B2 (en) * 2004-09-29 2011-10-25 The Regents Of The University Of California, San Francisco Apparatus and methods for magnetic alteration of deformities
US8142454B2 (en) * 2004-09-29 2012-03-27 The Regents Of The University Of California, San Francisco Apparatus and method for magnetic alteration of anatomical features
US8439915B2 (en) * 2004-09-29 2013-05-14 The Regents Of The University Of California Apparatus and methods for magnetic alteration of anatomical features
US20060271107A1 (en) * 2004-09-29 2006-11-30 Harrison Michael R Apparatus and methods for magnetic alteration of anatomical features
US20060079897A1 (en) * 2004-09-29 2006-04-13 Harrison Michael R Apparatus and methods for magnetic alteration of anatomical features
DE102005007851A1 (en) * 2005-02-21 2006-08-24 Siemens Ag Irradiation apparatus for irradiating a living organism with electromagnetic radiation to affect the biologic structure of the organism
US20070021693A1 (en) * 2005-03-07 2007-01-25 Titi Trandafir Dynamic motion therapy apparatus having a treatment feedback indicator
US8603017B2 (en) * 2005-03-07 2013-12-10 American Medical Innovations, L.L.C. Vibrational therapy assembly for treating and preventing the onset of deep venous thrombosis
US20070055185A1 (en) * 2005-03-07 2007-03-08 Juvent Inc. Dynamic motion therapy apparatus having a treatment feedback indicator
US20070043310A1 (en) * 2005-03-07 2007-02-22 Juvent Inc. Method and apparatus for monitoring patient compliance during dynamic motion therapy
AU2006226886B2 (en) * 2005-03-24 2010-11-25 American Medical Innovations L.L.C. Apparatus and method for monitoring and controlling the transmissibility of mechanical vibration energy during dynamic motion therapy
JP4821957B2 (en) * 2005-05-09 2011-11-24 株式会社Ｐ・マインド High frequency treatment device
US20080139979A1 (en) * 2005-07-18 2008-06-12 Juvent, Inc. Vibrational therapy assembly adapted for removably mounting to a bed
US20070055096A1 (en) * 2005-07-29 2007-03-08 Berry Cheryl J Sexual stimulation devices and toys with features for playing audio and/or video received from an external source
WO2007103414A2 (en) * 2006-03-09 2007-09-13 Juvent, Inc. Mechanical loading apparatus having a signal modulating assembly
US20080009776A1 (en) * 2006-03-24 2008-01-10 Juvent Inc. Apparatus and method for monitoring and controlling the transmissibility of mechanical vibration energy during dynamic motion therapy
US8672826B2 (en) * 2006-04-07 2014-03-18 Global Energy Medicine Pty. Ltd. Vivo stimulation of cellular material
US8795210B2 (en) 2006-07-11 2014-08-05 American Medical Innovations, L.L.C. System and method for a low profile vibrating plate
JP4992015B2 (en) * 2007-02-19 2012-08-08 国立大学法人金沢大学 Bone disease treatment magnetic field generator and bone disease treatment evaluation and development system using the same
MX2009011042A (en) * 2007-04-12 2010-07-05 Ivivi Technologies Inc Electromagnetic field treatment apparatus and method for using same.
EP2020251A1 (en) * 2007-07-26 2009-02-04 Johannes Josephus Maria Cuppen Coil structure for electromagnetic stimulation of a process within a living organism, device using such coil structure and method of driving
EP2020250A1 (en) * 2007-07-26 2009-02-04 Johannes Josephus Maria Cuppen Device and method for electromagnetic stimulation of a process within living organisms
EP2313969B1 (en) 2008-07-10 2012-11-28 Applied Magnetics, LLC Highly precise and low level signal-generating drivers, systems and methods of use
EP2349475B1 (en) 2008-08-25 2016-01-06 Applied Magnetics, LLC Systems for providing a magnetic resonance treatment to a subject
EP2339983B1 (en) * 2008-09-09 2014-11-26 New York University Devices to increase craniofacial bone density
US20100114103A1 (en) * 2008-11-06 2010-05-06 The Regents Of The University Of California Apparatus and methods for alteration of anatomical features
US9457198B2 (en) * 2009-02-18 2016-10-04 Shenzhen Cornley Hi-Tech Co., Ltd. Ultra-low frequency magnetic stimulating device and operational method thereof
WO2013049345A2 (en) * 2011-09-27 2013-04-04 The Maclean Hospital Corporation Magnetic field stimulation
US8343027B1 (en) 2012-01-30 2013-01-01 Ivivi Health Sciences, Llc Methods and devices for providing electromagnetic treatment in the presence of a metal-containing implant
RO128805B1 (en) * 2012-03-21 2014-03-28 Bogdan-Constantin Vlădilă Equipment for local application of an extremely low frequency electromagnetic field in the buccal cavity
US10085822B2 (en) 2012-04-13 2018-10-02 Advanced Orthodontics And Education Association, Llc Method and device for increasing bone density in the mouth
US9320913B2 (en) 2014-04-16 2016-04-26 Rio Grande Neurosciences, Inc. Two-part pulsed electromagnetic field applicator for application of therapeutic energy
DE102016108601A1 (en) * 2016-05-10 2017-11-16 Axel Muntermann Apparatus for nuclear magnetic resonance therapy
US10806942B2 (en) 2016-11-10 2020-10-20 Qoravita LLC System and method for applying a low frequency magnetic field to biological tissues
EP4442209A3 (en) 2017-06-30 2025-03-05 Regents of the University of California Magnetic devices and systems
US11305112B2 (en) * 2018-05-16 2022-04-19 DePuy Synthes Products, Inc. Electrical stimulation implants
CN109431657A (en) * 2018-10-25 2019-03-08 京东方科技集团股份有限公司 Device, biodegrading process, the artificial bone of external control artificial bone degradation speed

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US435343A (en) * 1890-08-26 Articulated electro-magnet
US717072A (en) * 1901-05-08 1902-12-30 John Burry Magnetotherapeutic apparatus.
US743373A (en) * 1903-10-02 1903-11-03 Emile Bachelet Electromagnetic therapeutic apparatus.
US2368207A (en) * 1941-01-30 1945-01-30 Warren S Eaton Method of and means for therapeutic treatment
US2404283A (en) * 1942-01-17 1946-07-16 Licbel Flarsheim Company Electrode for diathermy treatments
JPH028485U (en) * 1988-06-29 1990-01-19

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3964473A (en) * 1972-09-21 1976-06-22 Telectronics Pty. Limited Bone prosthesis
US4195367A (en) * 1976-03-19 1980-04-01 Werner Kraus Long-term endoprosthesis
US4214322A (en) * 1976-03-19 1980-07-29 Werner Kraus Long-term endoprosthesis
US4216548A (en) * 1976-03-19 1980-08-12 Werner Kraus Long-term endoprosthesis
US4306564A (en) * 1977-09-22 1981-12-22 Werner Kraus Electrification attachment for an osteo-synthesis implantate
US4421115A (en) * 1977-09-22 1983-12-20 Werner Kraus Electrification attachment for an osteosynthesis implantate
US4549547A (en) * 1982-07-27 1985-10-29 Trustees Of The University Of Pennsylvania Implantable bone growth stimulator
US4611597A (en) * 1982-11-03 1986-09-16 Werner Kraus Implantable device for the stimulation of bone growth
EP1371388A2 (en) * 1990-05-04 2003-12-17 Bio-Magnetic Therapy Systems, Inc. Apparatus for treating a body organ with magnetic field
US7455672B2 (en) 1994-05-27 2008-11-25 Gary Karlin Michelson Method for the delivery of electrical current to promote bone growth between adjacent bone masses
US20090088857A1 (en) * 1994-05-27 2009-04-02 Gary Karlin Michelson Implant for the delivery of electrical current to promote bone growth between adjacent bone masses
US7935116B2 (en) 1994-05-27 2011-05-03 Gary Karlin Michelson Implant for the delivery of electrical current to promote bone growth between adjacent bone masses
US8206387B2 (en) 1994-05-27 2012-06-26 Michelson Gary K Interbody spinal implant inductively coupled to an external power supply
US20040024400A1 (en) * 1994-05-27 2004-02-05 Michelson Gary Karlin Method for the delivery of electrical current to promote bone growth between adjacent bone masses
US6018094A (en) * 1995-02-06 2000-01-25 Biomedical Enterprises, Inc. Implant and insert assembly for bone and uses thereof
US6034295A (en) * 1995-11-30 2000-03-07 Christoph Rehberg Implantable device having an internal electrode for stimulating growth of tissue
EP0781532A2 (en) 1995-11-30 1997-07-02 Christoph Rehberg Implantable device with inner electrode
US6143035A (en) * 1999-01-28 2000-11-07 Depuy Orthopaedics, Inc. Implanted bone stimulator and prosthesis system and method of enhancing bone growth
EP1023872A3 (en) * 1999-01-28 2002-08-07 Depuy Orthopaedics, Inc. Implanted bone stimulator and prothesis system
WO2001095817A1 (en) * 2000-06-13 2001-12-20 Hyde Edward R Jr Magnetic array implant and prosthesis
US6599321B2 (en) 2000-06-13 2003-07-29 Edward R. Hyde, Jr. Magnetic array implant and prosthesis
US7101374B2 (en) 2000-06-13 2006-09-05 Hyde Jr Edward R Magnetic array implant
US6387096B1 (en) * 2000-06-13 2002-05-14 Edward R. Hyde, Jr. Magnetic array implant and method of treating adjacent bone portions
US20030195633A1 (en) * 2001-05-04 2003-10-16 Hyde Edward R. Magnetic array implant and prosthesis insert
US20030187510A1 (en) * 2001-05-04 2003-10-02 Hyde Edward R. Mobile bearing prostheses
NL1018287C2 (en) * 2001-06-14 2002-12-30 Georges Vanroy Device and method for applying an electromagnetic field to a living body.
WO2002102457A1 (en) * 2001-06-14 2002-12-27 Georges Vanroy Apparatus for applying an electromagnetic field to a living body
WO2005044375A1 (en) 2003-11-11 2005-05-19 Igea S.R.L. Electromagnetic field stimulator device for anatomic biophysical chondroprotection
US20070173681A1 (en) * 2003-11-11 2007-07-26 Roberto Giardino Electromagnetic field stimulator device for anatomic biophysical chondroprotection
US7566295B2 (en) 2003-11-11 2009-07-28 Igea S.R.L. Electromagnetic field stimulator device for anatomic biophysical chondroprotection
USRE46582E1 (en) 2004-06-07 2017-10-24 DePuy Synthes Products, Inc. Orthopaedic implant with sensors
US8083741B2 (en) 2004-06-07 2011-12-27 Synthes Usa, Llc Orthopaedic implant with sensors
US20060052782A1 (en) * 2004-06-07 2006-03-09 Chad Morgan Orthopaedic implant with sensors
US20060190080A1 (en) * 2005-02-04 2006-08-24 Intellistem Orthopaedic Implanted prosthetic device
US7431734B2 (en) 2005-02-04 2008-10-07 Intellistem Orthopaedic Innovations, Inc. Implanted prosthetic device
US20100152864A1 (en) * 2008-12-15 2010-06-17 University Of Utah Osseointegrated implant with electrical stimulation
US20120165950A1 (en) * 2010-12-23 2012-06-28 Rainer Baumgart Implantable prosthesis for replacing a human hip or knee joint and the adjoining bone sections
US8778029B2 (en) * 2010-12-23 2014-07-15 Rainer Baumgart Implantable prosthesis for replacing a human hip or knee joint and the adjoining bone sections
US10004916B2 (en) 2011-12-27 2018-06-26 Richard A. Rogachefsky Orthopedic fixation device with magnetic field generator
EP2797525A4 (en) * 2011-12-27 2015-11-04 Richard Rogachefsky Orthopedic fixation device with magnetic field generator
US8679189B1 (en) * 2013-02-11 2014-03-25 Amendia Inc. Bone growth enhancing implant
US10838406B2 (en) 2013-02-11 2020-11-17 The Aerospace Corporation Systems and methods for the patterning of material substrates
US10335282B2 (en) 2016-02-09 2019-07-02 Richard A. Rogachefsky Magnetic joint replacement
US11596803B2 (en) 2018-08-02 2023-03-07 Richard A. Rogachefsky Orthopedic treatment device with electromagnetic field generator

Also Published As

Publication number Publication date
SE412991B (en) 1980-03-31
CH539438A (en) 1973-07-31
GB1393701A (en) 1975-05-14
JPS6141583B2 (en) 1986-09-16
AT316729B (en) 1974-07-25
JPS52142887A (en) 1977-11-29
GB1393702A (en) 1975-05-14
ATA291772A (en) 1976-08-15
CH551201A (en) 1974-07-15
SE381813B (en) 1975-12-22
JPS56125061A (en) 1981-10-01
SE387240B (en) 1976-09-06
SE7608327L (en) 1976-07-21
AT336174B (en) 1977-04-25
JPS5839547B1 (en) 1983-08-30
JPS5311799B2 (en) 1978-04-24
US3890953A (en) 1975-06-24

Similar Documents

Publication Publication Date Title
US3820534A (en) Device for promoting the formation of bone substance
US3783880A (en) Method for aiding formation of bone forming material
Brighton The treatment of non-unions with electricity.
US3918440A (en) Device for promoting formation of bone material
Paterson et al. Treatment of delayed union and nonunion with an implanted direct current stimulator.
US8784411B2 (en) Electrode for stimulating bone growth, tissue healing and/or pain control, and method of use
US8425395B2 (en) Implantable device, system for generating localised electromagnetic fields in the area of an implant and coil arrangement
US11167132B2 (en) System for stimulating bone growth, tissue healing and/or pain control, and method of use
US4619264A (en) Method and apparatus for treatment of fresh fractures, delayed unions and non-unions of living bone
DE3563812D1 (en) Device for the fixation of tubular bone fractures with an intramedullary nail and anchoring pin
CONNOLLY Selection, evaluation and indications for electrical stimulation of ununited fractures
EP0172163B1 (en) Bone growth stimulator
JP2019162456A (en) System for stimulating bone growth, tissue healing and/or pain control, and method of use
Spadaro Electrically enhanced osteogenesis at various metal cathodes
EP3793461B1 (en) Electrical stimulation implants
US6163727A (en) Hook shaped spinal cord electrode assembly
US20020111660A1 (en) Hook-shaped spinal cord electrode assembly having a telescoping electrode
Fontanesi et al. The Effect of Low Frequency Pulsing Electromagnetic Fields for the Treatment of Congenital and Acquired Pseudoarthroses: the Italian Group for the Study of the Effects of LFPEFs in Orthopaedics
SU944566A1 (en) Femur fixator
SU950362A1 (en) Rod for osteosynthesis
SU1074503A1 (en) Method of osteogenesis regulation
Jørgensen Original Technique for Noninvasive Electric Stimulation Designed for the Hoffmann® Fixator
JP2903407B2 (en) Biostimulator for promoting bone growth
Virgili pseudoarthroses of the inferior limb with low-frequency pulsing electromagnetic fields: report of 16 cases. J. Bioelectricity, 4: 251-264, 1985.[4] Dal Monte A., Fontanesi G., Giancecchi F., Poli G., Cadossi R.: Treatment of congenital pseudarthrosis and acquired non-union
Schroder et al. Electrostimulation and Bone Grafting of Nonunions with Bone Defects