WO2013170696A1 - 一种听诊器听头 - Google Patents

一种听诊器听头 Download PDF

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Publication number
WO2013170696A1
WO2013170696A1 PCT/CN2013/074794 CN2013074794W WO2013170696A1 WO 2013170696 A1 WO2013170696 A1 WO 2013170696A1 CN 2013074794 W CN2013074794 W CN 2013074794W WO 2013170696 A1 WO2013170696 A1 WO 2013170696A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
head
sound guiding
hollow rivet
density
Prior art date
Application number
PCT/CN2013/074794
Other languages
English (en)
French (fr)
Inventor
单希杰
Original Assignee
Shan Xijie
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 CN2012101480717A external-priority patent/CN102670239B/zh
Priority claimed from CN2012202148565U external-priority patent/CN202526206U/zh
Application filed by Shan Xijie filed Critical Shan Xijie
Priority to US14/400,976 priority Critical patent/US9420987B2/en
Priority to ES13791519T priority patent/ES2716563T3/es
Priority to DE212013000116.9U priority patent/DE212013000116U1/de
Priority to EP13791519.5A priority patent/EP2851005B1/en
Priority to PL13791519T priority patent/PL2851005T3/pl
Publication of WO2013170696A1 publication Critical patent/WO2013170696A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B7/00—Instruments for auscultation
    • A61B7/02—Stethoscopes
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/08—Non-electric sound-amplifying devices, e.g. non-electric megaphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes

Definitions

  • the present invention relates to a medical device accessory, and more particularly to an accessory for a stethoscope, in particular a stethoscope head. Background technique
  • High-density materials such as copper (density 8.9 g/cm 3 ), titanium alloy (density 7.82 g/cm 3 ) stainless steel, steel due to sound conduction in high-density materials, low attenuation, clear sound, high-density materials Density of 7. 8 g / cm 3 ), zinc alloy (density of 6.58. 9g / cm 3 ), etc., the prior art stethoscope heads are made of high-density materials. However, high-density materials are expensive, heavy, and have a single color, which is not easy to use.
  • the materials commonly used in the manufacture of stethoscopes are titanium alloy, copper, stainless steel, etc.
  • Stethoscopes processed with such high-density materials cost very high tools, and the processing time is long and the cost is high, which greatly increases consumption. The cost of use.
  • the existing stethoscope heads are mostly one-piece, the shape of the head is similar to that of a waist drum, and the middle of the head is thin. If the casting method is used, the mold cannot be demolded, so it can only be produced by means of machining, so the work efficiency is compared. low. Summary of the invention
  • Another object of the present invention is to provide a method of reducing the weight of a stethoscope.
  • the object of the invention is achieved in this way:
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side sound guiding holes are disposed on the body of the head and communicate with each other; at least a part of the body of the head is made of a second density material; a material density of the sound guiding layer on the sound collecting surface Greater than the second density material.
  • a sound density of the sound guiding layer in the sound guiding hole is greater than a material density of the second density material; and a material density of the sound guiding hole guiding layer in the sound guiding hole and the sound collecting surface
  • the material density of the upper sound guiding layer is the same or different.
  • the head body is a split type, and includes an upper head body and a lower head body that cooperate with each other;
  • the sound collecting surface includes an upper sound collecting surface disposed on the upper head body and is disposed on a lower sound collecting surface of the lower head body, wherein the upper sound collecting surface and the lower sound collecting surface are electrically connected through the sound guiding hole, and the sound guiding hole is in communication with the side sound guiding hole;
  • the lower head body and the upper head body use materials of the same or different densities, but at least one of them is made of a second density material.
  • the head body is composed of a combination of an upper head body and a lower head body, and when the material density of the lower head body is different from the material density of the upper head body:
  • the upper head body is made of a first density material, and when the lower head body is made of a second density material, the first material density is greater than the second material density:
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, the sound collecting surface and the sound guiding sound
  • the hole and the side sound guiding hole are disposed on the body of the head;
  • the body of the head is of a split type, and comprises an upper head body and a lower head body that cooperate with each other;
  • the sound collecting surface includes an upper sound collecting surface disposed on the upper head body and a lower sound collecting surface disposed on the lower head body, and the upper collecting surface and the lower collecting surface pass through
  • the sound guiding hole is electrically connected, and the sound guiding hole intersects with the side sound guiding hole and communicates with each other;
  • One end of the sound guiding hole of the lower head body is provided with a hollow rivet with an interference fit, a tolerance fit or a threaded fit, and the rod cavity of the hollow rivet penetrates the two ends of the hollow rivet along the axis
  • the hollow rivet cap portion is in conformity with an end surface of the lower head body, and the hollow rivet rod end abuts against the side sound guiding hole;
  • the other end of the sound guiding hole of the lower head body is provided with a special-shaped hollow rivet with an interference fit, a tolerance fit or a threaded fit, an end outer surface of the shaped hollow rivet and the lower head body
  • the lower sound collecting surface is anastomosed, and the rod cavity of the shaped hollow rivet penetrates both ends of the shaped hollow rivet along the axis, and the rod end of the shaped hollow rivet abuts against the side sound guiding hole.
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side guiding sound hole is disposed on the body of the head;
  • the body of the head is of a split type, comprising an upper head body and a lower head body that cooperate with each other;
  • the sound collecting surface includes an upper sound collecting surface disposed on the upper head body and a lower sound collecting surface disposed on the lower head body, and the upper collecting surface and the lower collecting surface pass through
  • the sound guiding hole is electrically connected, and the sound guiding hole intersects with the side sound guiding hole and communicates with each other;
  • An end of the sound guiding hole of the lower head body is provided with an interference fit, tolerance a hollow rivet having a matching or threaded fit, the rod cavity of the hollow rivet passing through the two ends of the hollow rivet along an axis, the hollow rivet cap portion conforming to and conforming to the shape of an end surface of the lower head body,
  • the hollow rivet rod portion is provided with a hole that coincides with the axis of the side sound guiding hole and has the same aperture and penetrates the wall of the double-sided rod portion;
  • the other end of the sound guiding hole of the lower head body is provided with a special-shaped hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the shaped hollow rivet and the lower head body
  • the lower sound collecting surface is anastomosed, and the rod cavity of the shaped hollow rivet penetrates both ends of the shaped hollow rivet along an axis, and the shaped hollow rivet rod end abuts the hollow rivet rod end.
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side guiding sound hole is disposed on the body of the head;
  • the body of the head is of a split type, comprising an upper head body and a lower head body that cooperate with each other;
  • the sound collecting surface includes an upper sound collecting surface disposed on the upper head body and a lower sound collecting surface disposed on the lower head body, and the upper collecting surface and the lower collecting surface pass through
  • the sound guiding hole is electrically connected, and the sound guiding hole intersects with the side sound guiding hole and communicates with each other;
  • One end of the sound guiding hole of the lower head body is provided with a hollow rivet with an interference fit, a tolerance fit and a threaded fit, and the rod cavity of the hollow rivet penetrates the two ends of the hollow rivet along the axis,
  • the hollow rivet cap portion is in conformity with the shape of one end surface of the lower head body and is closely matched;
  • the other end of the sound guiding hole of the lower head body is provided with a special-shaped hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the shaped hollow rivet Fully conforming to the lower sound collecting surface of the lower head body, the rod cavity of the shaped hollow rivet penetrates the two ends of the shaped hollow rivet along an axis, and the shaped hollow rivet rod portion is provided with the The hole of the side guiding sound hole coincides with the hole having the same hole diameter and penetrates the wall of the double-sided rod pipe; the special-shaped hollow rivet rod portion abuts against the hollow rivet rod portion.
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side guiding sound hole is disposed on the body of the head;
  • the body of the head is of a split type, comprising an upper head body and a lower head body that cooperate with each other;
  • a hollow body is disposed in the sound guiding hole of the lower head body, and a hollow body is disposed at one end of the sound guiding hole of the lower head body, and is provided with an interference fit, a tolerance fit, and a thread fit.
  • a rivet the rod cavity of the hollow rivet penetrates the two ends of the hollow rivet along the axis, the hollow rivet cap portion is in close match with the shape of an end surface of the lower head body, and the hollow rivet rod end is One end of the hollow tube abuts;
  • the other end of the sound guiding hole of the lower head body is provided with a special-shaped hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the shaped hollow rivet and the lower head body
  • the lower sound collecting surface is anastomosed, the rod cavity of the shaped hollow rivet penetrates the two ends of the shaped hollow rivet along an axis, and the rod end of the shaped hollow rivet abuts against the other end of the hollow tube;
  • the side sound guiding hole communicates with the hollow tube lumen, the rod cavity of the hollow rivet, and the rod cavity of the shaped hollow rivet.
  • the hollow tube is provided with the side sound guiding hole and penetrates at least A hole in the wall of one side.
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side guiding sound hole is disposed on the body of the head;
  • the body of the head is of a split type, comprising an upper head body and a lower head body that cooperate with each other;
  • a hollow body is disposed in the sound guiding hole of the lower head body, and a hollow body is disposed at one end of the sound guiding hole of the lower head body, and is provided with an interference fit, a tolerance fit, and a thread fit.
  • a rivet the rod cavity of the hollow rivet penetrates the two ends of the hollow rivet along the axis, the hollow rivet cap portion is in close match with the shape of an end surface of the lower head body, and the hollow rivet rod end is One end of the hollow tube abuts;
  • the other end of the sound guiding hole of the lower head body is provided with a special-shaped hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the shaped hollow rivet and the lower head body
  • the lower sound collecting surface is anastomosed, the rod cavity of the shaped hollow rivet penetrates the two ends of the shaped hollow rivet along an axis, and the rod end of the shaped hollow rivet abuts against the other end of the hollow tube;
  • the side sound guiding hole communicates with the hollow tube lumen, the rod cavity of the hollow rivet, and the rod cavity of the shaped hollow rivet.
  • the stem of the hollow rivet is provided with a hole communicating with the side sound guiding hole and passing through at least one side of the pipe wall.
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, the sound collecting surface and the sound guiding sound
  • the hole and the side sound guiding hole are disposed on the body of the head;
  • the body of the head is of a split type, and comprises an upper head body and a lower head body that cooperate with each other;
  • a hollow tube is disposed in the sound guiding hole of the lower head body; an end of the sound guiding hole of the lower head body is provided with an interference fit, a tolerance fit, and a thread a hollow rivet, the rod cavity of the hollow rivet penetrates the two ends of the hollow rivet along an axis, and the hollow rivet cap portion is in close match with the shape of an end surface of the lower head body, and the hollow rivet rod The end abuts against one end of the hollow tube;
  • the other end of the sound guiding hole of the lower head body is provided with a special-shaped hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the shaped hollow rivet and the lower head body
  • the lower sound collecting surface is anastomosed, the rod cavity of the shaped hollow rivet penetrates the two ends of the shaped hollow rivet along an axis, and the rod end of the shaped hollow rivet abuts against the other end of the hollow tube;
  • the side sound guiding hole communicates with the hollow tube lumen, the rod cavity of the hollow rivet, and the rod cavity of the shaped hollow rivet.
  • the stem of the shaped hollow rivet is provided with a hole that coincides with the axis of the side guide hole and has the same aperture and penetrates at least one side of the tube wall.
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side guiding sound hole is disposed on the body of the listening head;
  • the body of the listening head is a split type, and the package The upper head body and the lower head body that cooperate with each other;
  • the sound collecting surface includes an upper sound collecting surface disposed on the upper head body and a lower sound collecting surface disposed on the lower head body, and the upper collecting surface and the lower collecting surface pass through
  • the sound guiding hole is electrically connected, and the sound guiding hole intersects with the side sound guiding hole and communicates with each other;
  • One end of the sound guiding hole of the upper head body is provided with an outer shape hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the shaped hollow rivet and the upper head body
  • the upper sound collecting surface is anastomosed, and the rod cavity of the shaped hollow rivet penetrates both ends of the shaped hollow rivet along the axis, and is located in the other end of the sound guiding hole of the upper head body.
  • An internal thread of the head body is engaged; an outer edge of one end of the lower head body is provided with an external thread that cooperates with the internal thread.
  • a stethoscope head comprising a head body and a sound guiding channel in the body of the head, the sound guiding channel comprising a sound collecting surface, a sound guiding hole and a side sound guiding hole, wherein the sound collecting surface, the sound guiding hole and the side sound guiding hole are disposed on the body of the head;
  • the body of the listening head is of a split type, including a matching upper body and a lower listening body;
  • the sound collecting surface includes an upper sound collecting surface disposed on the upper head body and a lower sound collecting surface disposed on the lower head body, and the upper collecting surface and the lower collecting surface pass through
  • the sound guiding hole is electrically connected, and the sound guiding hole intersects with the side sound guiding hole and communicates with each other;
  • One end of the sound guiding hole of the upper head body is provided with a first shaped hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the first shaped hollow rivet and the upper portion
  • the upper sound collecting surface of the head body is anastomosed, and the rod cavity of the first shaped hollow rivet penetrates the two ends of the first shaped hollow rivet along the axis, and is located at the upper head
  • the other end of the sound guiding hole of the body is provided with an internal thread matched with the lower head body; and one end of the sound guiding hole of the lower head body is provided with a hollow rivet with an interference fit therebetween,
  • the rod cavity of the hollow rivet penetrates the two ends of the hollow rivet along the axis, the hollow rivet cap portion is in close match with the shape of an end surface of the lower head body, and the hollow rivet rod end and the side guide sound Hole abutment;
  • the other end of the sound guiding hole of the lower head body is provided with a second shaped hollow rivet with an interference fit, the end outer surface of the second shaped hollow rivet and the lower head body
  • the sound collecting surface of the second shaped hollow rivet penetrates the two ends of the second shaped hollow rivet along the axis, and the rod end of the second shaped hollow rivet abuts the side sound guiding hole ;
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side guiding sound hole is disposed on the body of the head; the body of the head is of a split type, comprising an upper head body and a lower head body that cooperate with each other;
  • the sound collecting surface includes an upper sound collecting surface disposed on the upper head body and a lower sound collecting surface disposed on the lower head body, and the upper collecting surface and the lower collecting surface pass through
  • the sound guiding hole is electrically connected, and the sound guiding hole intersects with the side sound guiding hole and communicates with each other;
  • One end of the sound guiding hole of the upper head body is provided with a first shaped hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the first shaped hollow rivet and the upper portion
  • the upper sound collecting surface of the head body is anastomosed, and the rod cavity of the first shaped hollow rivet penetrates the two ends of the first shaped hollow rivet along the axis, and is located at the upper head
  • the other end of the sound guiding hole of the body is provided with an internal thread matched with the lower head body; and one end of the sound guiding hole of the lower head body is provided with a hollow rivet with an interference fit therebetween, a rod cavity of the hollow rivet penetrates the two ends of the hollow rivet along the axis, the hollow rivet cap portion is in close match with the shape of an end surface of the lower head body, and the hollow rivet rod portion is provided with the
  • the side guide hole axis coincides with the same aperture and penetrates the hole of the double side wall of the rod;
  • the other end of the sound guiding hole of the lower head body is provided with a second shaped hollow rivet with an interference fit, the end outer surface of the second shaped hollow rivet and the lower head body
  • the sound collecting surface of the second shaped hollow rivet penetrates the two ends of the second shaped hollow rivet along the axis, and the second shaped hollow rivet rod end abuts the hollow rivet rod end;
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side guiding sound hole is disposed on the body of the head; the body of the head is of a split type, comprising an upper head body and a lower head body that cooperate with each other;
  • the sound collecting surface includes an upper sound collecting surface disposed on the upper head body and a lower sound collecting surface disposed on the lower head body, and the upper collecting surface and the lower collecting surface pass through
  • the sound guiding hole is electrically connected, and the sound guiding hole intersects with the side sound guiding hole and communicates with each other;
  • One end of the sound guiding hole of the upper head body is provided with a first shaped hollow rivet with an interference fit, a tolerance fit and a threaded fit, and an outer surface of the end of the first shaped hollow rivet and the upper portion
  • the upper sound collecting surface of the head body is completely matched, in the first shape
  • the rod cavity of the empty rivet penetrates the two ends of the first shaped hollow rivet along the axis, and the other end of the sound guiding hole of the upper head body is provided with an internal thread matched with the lower head body;
  • One end of the sound guiding hole of the head body is provided with a hollow rivet with an interference fit, a tolerance fit and a threaded fit, and the rod cavity of the hollow rivet penetrates the two ends of the hollow rivet along the axis, the hollow
  • the rivet cap portion is in conformity with the shape of one end surface of the lower head body and closely fits; the other end of the sound guiding hole of the lower head body is provided with a second shaped hollow rivet with an interference fit therebetween,
  • the sound collecting surface may be a curved surface, a tapered surface, or a combination of a curved surface or a tapered surface.
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side guide hole is disposed on the body of the head;
  • the body of the head is a unitary body made of a second density material, and the sound guiding layer has the same shape as the shape of the sound collecting surface And a hole penetrating through the bottom and communicating with the sound guiding hole, the sound guiding layer or the special hollow rivet, the material density of the shaped hollow rivet being made larger than the second density material
  • the outer surface of the end of the shaped hollow rivet is matched and closely matched with the sound collecting surface on the body of the head, and the outer surface of the stem of the shaped hollow rivet is closely matched with the sound guiding hole.
  • the rod cavity of the shaped hollow rivet communicates with the side sound guiding hole.
  • the sound collecting surface includes an upper collecting surface and a lower collecting surface;
  • the shaped hollow rivet comprises a first shaped hollow rivet and a third shaped hollow rivet;
  • the rod cavity of the first shaped hollow rivet penetrates the two ends of the first profiled hollow rivet along the axis; the rod cavity of the third profiled hollow rivet penetrates the two ends of the third profiled hollow rivet along the axis;
  • the outer surface of the end portion of the first shaped hollow rivet is in close match with the upper sound collecting surface, and the outer surface of the rod portion of the first shaped hollow rivet is closely matched with the sound guiding hole; the rod of the first shaped hollow rivet a cavity is in communication with the side sound guiding hole;
  • the outer surface of the end portion of the third shaped hollow rivet is in close match with the upper sound collecting surface, and the outer surface of the rod portion of the third shaped hollow rivet is closely matched with the sound guiding hole; the rod of the third shaped hollow rivet
  • the cavity is in communication with the side guide hole.
  • the sound collecting surface includes an upper collecting surface and a lower collecting surface;
  • the shaped hollow rivet comprises a first shaped hollow rivet and a third shaped hollow rivet;
  • the rod cavity of the first shaped hollow rivet penetrates the two ends of the first profiled hollow rivet along the axis; the rod cavity of the third profiled hollow rivet penetrates the two ends of the third profiled hollow rivet along the axis;
  • the outer surface of the end portion of the first shaped hollow rivet is in close match with the upper sound collecting surface, and the outer surface of the rod portion of the first shaped hollow rivet is closely matched with the sound guiding hole; a rod cavity of a special-shaped hollow rivet communicates with the side sound guiding hole;
  • the outer surface of the end portion of the third shaped hollow rivet is in close match with the upper sound collecting surface, and the outer surface of the rod portion of the third shaped hollow rivet is closely matched with the sound guiding hole; the rod of the third shaped hollow rivet The cavity is in communication with the side sound guiding hole; the first shaped hollow rivet rod end or the third shaped hollow rivet rod end abuts;
  • the rod portion of the first shaped hollow rivet or the rod portion of the third shaped hollow rivet is provided with a hole communicating with the rotating shaft and passing through at least a rod wall on the side of the rod portion and communicating with the rod cavity.
  • the sound collecting surface includes an upper collecting surface and a lower collecting surface;
  • the shaped hollow rivet comprises a first shaped hollow rivet and a third shaped hollow rivet;
  • the rod cavity of the first shaped hollow rivet penetrates the two ends of the first profiled hollow rivet along the axis; the rod cavity of the third profiled hollow rivet penetrates the two ends of the third profiled hollow rivet along the axis;
  • the outer surface of the end portion of the first shaped hollow rivet is in close match with the upper sound collecting surface, and the outer surface of the rod portion of the first shaped hollow rivet is closely matched with the sound guiding hole; the rod of the first shaped hollow rivet a cavity is in communication with the side sound guiding hole;
  • the outer surface of the end portion of the third shaped hollow rivet is in close match with the upper sound collecting surface, and the outer surface of the rod portion of the third shaped hollow rivet is closely matched with the sound guiding hole; the rod of the third shaped hollow rivet a cavity is in communication with the side sound guiding hole;
  • the sound guiding layer on the inner wall of the sound guiding hole is a hollow tube, and an outer wall of the hollow tube is closely matched with an inner wall of the sound guiding hole, and two ends of the hollow tube respectively abut the first shaped hollow a rod end of the rivet and a rod end of the third shaped hollow rivet;
  • the hollow tube is provided with a hole communicating with the side sound guiding hole and passing through at least a rod wall on one side of the rod portion and communicating with the rod cavity.
  • a stethoscope listening head includes a body of the head and a sound guiding channel in the body of the head, the sound guiding channel includes a sound collecting surface, a sound guiding hole and a side sound guiding hole, and the sound collecting surface and the sound guiding hole And the side sound guiding hole is disposed on the body of the head;
  • the body of the head is an integral body of the head made of a second density material, and the sound guiding layer is formed by a shaped hollow rivet,
  • the profiled hollow rivet has a material density greater than the second density material;
  • the outer surface of the end of the shaped hollow rivet is matched and closely matched with the sound collecting surface on the body of the head, and the outer surface of the stem of the shaped hollow rivet closely matches the sound guiding hole.
  • the rod cavity of the shaped hollow rivet communicates with the side sound guiding hole;
  • the guiding layer on the inner wall of the sound guiding hole is a hollow tube, and the outer wall of the hollow tube is a non-rotatable and immovable fit of the inner wall of the sound guiding hole, the two ends of the sound guiding tube abutting the rod end of the shaped hollow rivet;
  • the hollow tube is provided with a line coincident with the axis of the side guiding sound hole a hole having the same hole diameter and at least penetrating the wall of the rod on one side of the rod and communicating with the rod cavity.
  • Another object of the present invention is achieved by a method for reducing the weight of a stethoscope head, the stethoscope head comprising a body of the head and a sound guiding passage in the body of the head, the sound guiding channel comprising a sound collecting surface, a sound guiding hole and a side sound guiding hole, wherein the sound collecting surface, the sound guiding hole and the side sound guiding hole are disposed on the body of the head, and provide a first density material, at least on the sound collecting surface
  • the sound guiding layer is made of the first density material to ensure the sound quality of the stethoscope listening head;
  • Providing a second density material, at least a portion of the body of the head is made of the second density material;
  • the density of the second density material is less than the density of the first density material.
  • the sound guiding layer in the sound guiding hole is made of a third density material; the density of the second density material is smaller than the density of the third density material; the density of the third density material is the same as the density of the first density material The density is the same or different.
  • the density of each material is as follows: copper (density 8.9 g / cm 3 ), titanium alloy (density 7. 82 g / cm 3 ) stainless steel, steel (density 7. 8 g / cm 3 ), zinc alloy (density 6. 58 9g/cm 3 ) , aluminum alloy (density 2. 7 g / cm 3 ), engineering plastics (density 0. 8 g / cm 3 -2 g / cm 3 ), engineering rubber (density 0. 4 g / cm 3 -1. 5 g/cm 3 ) and so on.
  • the sound guiding layer is made of a higher density material, Sound wave conduction and increase have good performance, so it does not affect the effect of listening, but also has the following advantages:
  • the weight is reduced, the invention is only 60% of the original weight, light use It is easy to carry.
  • the upper listening head and the lower listening head can be formed by casting, which greatly improves the difficulty of the prior art turning processing and the reduced working cost.
  • Figure 1 is a schematic view of the present invention (single head) -1
  • Figure 2 is an assembly of the present invention (only the lower head body is a low-density material).
  • Figure 3 is a schematic view of the present invention (only the lower head body is a low-density material) -1
  • Figure 5 is a schematic view of the hollow rivet of the present invention -1
  • Figure 6 is a schematic view of a profiled hollow rivet of the present invention -1
  • Figure 7 is a schematic view of the lower body of the present invention.
  • Figure 8 is a schematic view of the assembly of the present invention (only the upper body of the upper head is a low-density material)
  • Figure 9 is a schematic view of the present invention (only the upper body of the head is a low-density material)
  • Figure 10 is a schematic view of a profiled hollow rivet of the present invention -2
  • Figure 11 is a schematic view of the assembly of the present invention (both upper and lower head bodies are low-density materials).
  • Figure 12 is a schematic view of the present invention (both upper and lower head bodies are low-density materials).
  • Figure 13 is a schematic view of the present invention (the body of the head is integral) -1
  • Figure 14 is a schematic view of the present invention (the body of the head is integral) -2
  • Figure 15 is a schematic view of the present invention (the body of the head is integral)
  • Figure 16 is a schematic view of the present invention (the body of the head is integral) - 4
  • Figure 17 is a schematic view of the present invention (the body of the head is integral) -5
  • Figure 18 is a schematic view of a hollow tube of the present invention -2
  • Embodiment 1 The following is a description of the present invention in conjunction with FIG. 1:
  • a stethoscope listening head includes a listening body and a sound guiding channel in the body of the head.
  • the sound guiding channel includes a lower collecting surface 23, a sound guiding hole D, and a side guiding sound hole 4.
  • the lower collecting surface 23, the sound guiding hole D, and the side guiding sound hole 4 are provided on the lower head body 2.
  • the lower collecting surface 23 is closely matched with the sound guiding layer;
  • the sound guiding layer is the first shaped hollow rivet 5, and the end outer surface 51 of the first shaped hollow rivet 5 is matched and closely matched with the lower collecting surface 23, and the first shaped hollow
  • the outer surface of the stem portion 55 of the rivet 5 is closely fitted to the sound guiding hole D.
  • the rod cavity 52 of the first profiled hollow rivet 5 penetrates both ends of the first profiled hollow rivet 5.
  • the rod cavity 52 communicates with the side guide hole 4.
  • the stem portion 55 of the first profiled hollow rivet 5 is provided with a hole 54 extending through the wall of the stem portion 55 and communicating with the stem cavity 52.
  • the hole 54 communicates with the side guide hole 4.
  • the first shaped hollow rivet 5 is prepared, and then the lower head body 2 is non-rotatable and movable to cover the rod portion 55 and the end outer surface 51 of the first shaped hollow rivet 5 by injection molding, thereby An integral structure in which the first profiled hollow rivet 5 and the lower head body 2 are closely fitted is formed.
  • a stethoscope listening head includes a listening body and a sound guiding channel in the body of the head.
  • the sound guide channel includes a lower sound collecting surface 23, a sound guiding hole D, and a side sound guiding hole 4.
  • the lower collecting surface 23, the sound guiding hole D and the side guiding sound hole 4 are provided on the lower head body 2.
  • the lower collecting surface 23 is closely matched with the sound guiding layer; the sound guiding layer is the first shaped hollow rivet 5, and the end outer surface 51 of the first shaped hollow rivet 5 is matched and closely matched with the lower collecting surface 23, and the first shaped hollow
  • the outer surface of the stem portion 55 of the rivet 5 is closely fitted to the sound guiding hole D.
  • the rod cavity 52 of the first shaped hollow rivet 5 penetrates the first shaped hollow rivet 5 Both ends.
  • the rod cavity 52 communicates with the side sound guiding hole 4.
  • the inner wall of the sound guiding hole D may be provided with a sound guiding layer made of an aluminum alloy.
  • the sound guiding layer is a hollow tube 9A closed at one end; the outer wall of the hollow tube is closely matched with the inner wall of the sound guiding hole D, and the matching manner may be a tight fit such as tolerance matching or thread matching.
  • the rod end 53 of the first profiled hollow rivet 5 may be adjacent to, but not in contact with, the open end of the hollow tube 9A, or may be abutted.
  • the first shaped hollow rivet 5 and the hollow tube 9A are made of stainless steel, copper, aluminum alloy, steel, etc., and the lower head body 2 is made of engineering plastic or engineering rubber.
  • Embodiment 3 The present invention will be further described below with reference to FIGS. 2, 3, 4, 5, 6, and 7.
  • the rivet 5 is composed.
  • the upper head body 1 is provided with an internal thread 1 1 and the lower head body 2 is provided with an outer thread 22, and the upper head body 1 and the lower head body 2 are fixed by the internal thread 11 and the external thread 22;
  • the sound guiding hole D penetrates the upper head body 1 and the lower head body 2, and the upper sound collecting surface 12 and the lower sound collecting surface 23 communicate with each other through the sound guiding hole D, and the sound guiding hole D and the side sound guiding hole 4 intersect and communicate with each other;
  • the head body 1 is made of stainless steel, and the lower head body 2 is made of engineering plastic.
  • the D-end of the sound guiding hole located at the lower lower head body 2 is provided with a hollow rivet 3 with an interference fit therebetween.
  • the rod cavity 31 of the hollow rivet 3 penetrates both ends of the hollow rivet 3 along the axis, and the hollow rivet cap portion 32 is in close shape and tightly fitted with the one end surface 21 of the lower head body 2, and the shank of the hollow rivet 3
  • the hollow rivet rod end 33 abuts against the side sound guiding hole 4
  • the other end of the sound guiding hole D of the lower head body 2 is provided with a first shaped hollow rivet 5 with an interference fit therebetween
  • the end outer surface 51 of the first shaped hollow rivet 5 completely conforms to the lower sound collecting surface 23 of the lower head body 2, and the rod portion of the hollow rivet 5 closely matches the sound guiding hole D, and the rod cavity of the first shaped hollow rivet 5 52 passes through both ends of the first shaped hollow rivet 5 along the axis, and the first shaped hollow rivet rod end 53 abuts against the side sound guiding hole 4.
  • Embodiment 4 The following description of the present invention will be made in conjunction with Figs. 8, 9, and 10:
  • a stethoscope listening head which is composed of an upper head body 1 and a lower head body 2, two opposite ends of the upper head surface 1 of the upper head body 1 and the lower sound collecting surface 23 of the lower head body 2 and The sound guiding hole 4 is located on the upper side of the lower head body 2, and the second shaped hollow rivet 6 is formed.
  • the upper head body 1 is provided with an internal thread 1 1 and a lower head body 2 provided with an external thread 22, and the upper head body 1 and the lower head body 2 are fixed by the internal thread 11 and the external thread 22.
  • the sound guiding hole D passes through the upper head body 1 and the lower head body 2, and the upper collecting surface 12 and the lower collecting surface 23 communicate with each other through the sound guiding hole D, and the sound guiding hole D and the side guiding sound hole 4 intersect and communicate with each other.
  • the upper head body 1 is made of engineering rubber, and the lower head body 2 is made of zinc alloy material.
  • the D-shaped end of the sound guiding hole of the upper head body 1 is provided with a second shaped hollow rivet 6 with an interference fit therebetween, and the end outer surface 61 of the second shaped hollow rivet 6 and the upper collecting sound of the upper head body 1
  • the surface 12 is completely anastomosed, and the rod cavity 62 of the second shaped hollow rivet 6 penetrates the two ends of the second shaped hollow rivet 6 along the axis, the rod portion 63 is placed in the sound guiding hole D, and the outer surface of the rod portion 63 and the sound guiding hole
  • the inner wall of D is closely fitted, and is located in the sound guiding hole D of the upper head body 1.
  • the other end is provided with an internal thread 11 that cooperates with the lower head body.
  • Embodiment 5 The following description of the present invention will be made in conjunction with Figs. 4, 5, 6, 7, 10, 11, and 12:
  • a stethoscope listening head which is provided by the upper listening head 1 and the lower listening head 2, and the two opposite ends of the upper collecting surface 12 of the upper listening head 1 and the lower collecting surface 23 of the lower listening head 2 are located under
  • the side guide hole 4 and the sound guide hole D on the head 2 are combined, and the hollow rivet 3 and the first profiled hollow rivet 5 are composed.
  • the upper head 1 is provided with an internal thread 11 and the lower head 2 is provided with an external thread 22, and the upper listening head 1 and the lower listening head 2 are fixed by the internal thread 11 and the external thread 22;
  • the sound guiding hole D passes through the upper head body 1 and the lower head body 2, and the upper collecting surface 12 and the lower collecting surface 23 communicate with each other through the sound guiding hole D, and the sound guiding hole D and the side guiding sound hole 4 intersect and communicate with each other.
  • the hollow rivet 3 and the first shaped hollow rivet 5 can be made of, for example, copper (density 8.9 g/cm 3 ), titanium alloy ( Density 7. 82 g/cm 3 ), stainless steel, steel (density 7.8 g/cm 3 ), zinc alloy (density 6.58. 9 g/cm 3 ), aluminum alloy (density 2. 7 g/cm 3 ) Materials such as material density greater than the density of engineering plastics or engineered rubber materials.
  • the hollow rivet 3 and the first shaped hollow rivet 5 can be used, for example, copper (density 8.9 g/cm 3 ), titanium alloy (density 7.82). Material preparation of g/cm 3 ), stainless steel, steel (density 7.8 g/cm 3 ), zinc alloy (density 6.58. 9 g/cm 3 ), etc., whose material density is greater than the density of the aluminum alloy material.
  • the D-end of the sound-conducting hole of the upper head body 1 is provided with a second shaped hollow rivet 6 with an interference fit, the end outer surface 61 of the second shaped hollow rivet 6 and the upper head body 1
  • the upper sound collecting surface 12 is completely matched, and the second shaped hollow rivet 6 rod cavity 62 penetrates the two ends of the second shaped hollow rivet 6 along the axis, and is disposed in the other end of the sound guiding hole D of the upper head body 1
  • the internal thread 11 of the head body 2 is fitted.
  • the D-end of the sound guiding hole located at the lower listening head 2 is provided with a hollow rivet 3 with an interference fit therebetween, and the rod cavity 31 of the hollow rivet 3 penetrates both ends of the hollow rivet 3 along the axis, and the lower end surface of the hollow rivet cap portion 32
  • the end surface 21 of the lower listening head 2 is in a matching shape and closely fits, and the hollow rivet rod end 33 abuts against the side sound guiding hole 4; the other end of the sound guiding hole D located in the lower listening head 2 is provided with an interference fit therebetween
  • the first shaped hollow rivet 5, the end outer surface 51 of the first shaped hollow rivet 5 completely coincides with the lower collecting surface 23 of the lower listening head 2, and the rod cavity 52 of the first shaped hollow rivet 5 penetrates the first line along the axis At both ends of the profiled hollow rivet 5, the first profiled hollow rivet rod end 53 abuts against the side sound guide hole 4.
  • Embodiment 6 The following is a description of the present invention in conjunction with the drawings: 13, 14, 15, and 16:
  • the stethoscope head includes a head body 8 and a sound guiding channel in the body of the head, and the sound guiding channel includes a sound collecting surface. Sound guiding hole D and side sound guiding hole 4;
  • the head body 8 is a unitary body made of engineering rubber 8;
  • the sound guiding layer on the upper collecting surface 12 is composed of a first shaped hollow rivet 5, and the first shaped hollow rivet 5 is made of copper; the sound guiding layer on the lower collecting surface 23 is composed of a third shaped hollow rivet 7, The three-shaped hollow rivet 7 is made of a titanium alloy;
  • the end outer surface 51 of the first shaped hollow rivet 5 coincides with and closely matches the upper sound collecting surface 12 of the upper head body 1, and the outer surface of the rod portion of the first shaped hollow rivet 5 and the sound guiding hole D work close with;
  • the end outer surface 71 of the third profiled hollow rivet 7 and the lower set on the lower head body 2 The sound surface 23 is anastomosed and closely matched, and the outer surface of the rod portion 73 of the third shaped hollow rivet 7 is closely matched with the sound guiding hole D;
  • the rod cavity 52 of the first shaped hollow rivet 5 penetrates both ends of the first shaped hollow rivet 5 and communicates with the side sound guiding hole 4;
  • the rod cavity 72 of the third shaped hollow rivet 7 penetrates the third shaped hollow rivet Both ends of 7 are connected to the side sound guiding holes 4;
  • the rod end of the first profiled hollow rivet 5 abuts and communicates with the side guide hole 4
  • the rod end of the third profiled hollow rivet 7 abuts and communicates with the side guide hole 4.
  • the rod portion 73 of the third shaped hollow rivet 7 is provided with a hole which coincides with the axis of the side sound guiding hole 4 and has the same hole diameter and penetrates the rod wall 73 and communicates with the rod cavity;
  • the rod end of the third shaped hollow rivet 7 of the rod end of the one-shaped hollow rivet 5 abuts.
  • the rod portion 55 of the first profiled hollow rivet 5 is provided with a hole which coincides with the axis of the side sound guiding hole 4 and has the same hole diameter and penetrates the rod wall of the rod portion 73 and communicates with the rod cavity;
  • the rod end of the first shaped hollow rivet 5 of the rod end of the shaped hollow rivet 7 abuts.
  • Embodiment 7 Referring to Figures 13, 14, 15, and 16
  • a method for reducing the weight of a stethoscope head comprising a head body 8 and a sound guiding channel in the body of the head, the sound guiding channel comprising an upper collecting surface 12, a lower collecting surface 23, a sound guiding hole D and Side guide hole 4;
  • the first shaped hollow rivet 5 and the third shaped hollow rivet 7 are prepared by using stainless steel; the head body 8 is made of engineering plastic; wherein the head body 8 can be separate or integral; The end outer surface 51 of the first shaped hollow rivet 5 is matched and closely matched with the upper sound collecting surface 12 of the head body 8, and the outer surface of the rod portion 55 of the first shaped hollow rivet 5 is closely matched with the sound guiding hole D;
  • the end outer surface 71 of the third profiled hollow rivet 7 is matched and closely fitted with the lower sound collecting face 23 on the head body 8, and the outer surface of the stem portion of the third profiled hollow rivet 7 is closely fitted with the sound guiding hole D;
  • Embodiment 8 The present invention will be further described with reference to FIG.
  • a method for reducing the weight of a stethoscope listening head comprising an upper head body 1 and a lower head body 2 and a second shaped hollow rivet 6;
  • the upper head body 1 is provided with a curved upper sound collecting surface 12, a lower collecting surface 23 and a side sound guiding hole 4 provided on the lower head body 2, wherein the upper head body 1 is provided inside
  • the thread 11 and the lower head body 2 are provided with external threads 22, and the upper head body 1 and the lower head body 2 are cooperatively fixed by internal threads 11 and external threads 22.
  • the sound guiding hole D passes through the upper head body 1 and the lower head body 2, and the upper collecting surface 12 and the lower collecting surface 23 communicate with each other through the sound guiding hole D, and the sound guiding hole D and the side guiding sound hole 4 intersect and communicate with each other.
  • the upper body of the head is prepared by using engineering rubber
  • the lower head body 2 is prepared by using stainless steel
  • the D-shaped end of the sound guiding hole of the upper head body 1 is provided with a second shaped hollow rivet 6 with an interference fit therebetween, and the end outer surface 61 of the second shaped hollow rivet 6 and the upper collecting sound of the upper head body 1
  • the face 12 is completely anastomosed, and the rod cavity 62 of the second profiled hollow rivet 6 penetrates the two ends of the second profiled hollow rivet 6 along the axis, and is located at the other end of the sound guiding hole D of the upper head body 1.
  • An internal thread 11 is provided inside the lower body.
  • the prior art adopts the stethoscope produced by Wuxi Kaishun Medical Device Manufacturing Co., Ltd.
  • the sound collecting chamber described in the detecting is a cavity formed by fixing the cover film to the sound collecting surface of the head body.
  • the sound collecting cavity of the stethoscope head is placed on the sealing connector on the sound source, so that the sound collecting plane (that is, the diaphragm) of the stethoscope head faces the sound source outlet and the joint thereof is in a sealed state;
  • the vertical distance between the mouth and the head of the stethoscope is 8-10mm.
  • One end of the sound tube with a diameter of 10 mm and a diameter of 40 cm is connected to the sound guiding connector of the stethoscope head, and the other end is connected to the audio receiver. 3. Turn on the source generator and audio receiver, write down the receiver value and divide this value by the standard value of the source generator. Based on the data, you can get the external noise immunity performance of the stethoscope.
  • Comparative Example 1 In combination with Example 1, the present invention was compared with the KS-410A type, KS-410B type, and KS-410C type stethoscopes of Wuxi Kaishun Medical Device Manufacturing Co., Ltd., respectively, and it can be seen that the processing time of the present invention is saved by nearly 1/4. The cost savings are more than 1/3, the external noise immunity is enhanced by nearly 1/5, and the weight is reduced by nearly 1/3. At the same time, the sound transmission performance is not changed significantly, and the carrying is convenient and beautiful.
  • the actual 3 ⁇ 43 ⁇ 4 town is 102 dB and the measured value is 101 dB.
  • Comparative Example 2 In combination with Example 2, the present invention was compared with the KS-450A type, KS-450B type and KS-450C type stethoscope of Wuxi Kaishun Medical Device Manufacturing Co., Ltd., respectively, and the processing time of the present invention was saved by about 1/4. The cost is saved by about 1/3, the external anti-noise ability is enhanced by about 1/5, and the weight is reduced by about 1/3. At the same time, the sound transmission performance is not changed significantly, and the carrying is convenient and beautiful.
  • Comparative Example 3 In combination with the implementation 3, the present invention (the upper head body adopts a single high-density material, and the lower head body adopts a combination of high and low density materials) respectively with the KS-500A type and KS of Wuxi Kaishun Medical Device Manufacturing Co., Ltd. - Comparison of Models 500B and KS-500C Stethoscopes: The comparison between the present invention and the KS-500A model is as follows:
  • the processing time of the invention is reduced by about 30%, the cost is saved by about 30%, the external noise immunity is increased by about 20%, and the weight is reduced by nearly 30%. At the same time, the sound transmission performance is not changed significantly, and the carrying is convenient and beautiful.
  • Comparative Example 4 In combination with Example 4, the present invention (the upper head body adopts a combination of high and low density materials, and the lower head body adopts a single high-density material) respectively, and the KS-510A type of Wuxi Kaishun Medical Device Manufacturing Co., Ltd. , KS-510B type, KS- 510C type stethoscope for comparison:
  • the processing time of the invention is reduced by about 30%, the cost is saved by about 30%, the external noise immunity is increased by about 20%, and the weight is reduced by about 1/3, and the sound transmission performance is not changed at the same time, and the carrying capacity is convenient and Beautiful.
  • Comparative Example 5 In combination with Example 5, the present invention (the upper head body and the lower head body are both made of a combination of high and low density materials) respectively, and KS-520A type and KS-520B of Wuxi Kaishun Medical Device Manufacturing Co., Ltd., respectively.
  • the body is high, f ⁇ density
  • the total cost is 7.0 ⁇ 7 yuan. 10.74 yuan
  • the total cost can be saved by 33°/.
  • the sound source can be assigned to the sound source 114dB 1000HZ ⁇ .114dB lOOOHZ
  • the sound injection can be changed significantly (using the sound of the sound chamber, the measured value is 113.5dB SSSHI value is 112.3dB
  • the measured value is 25.7dB 5 ⁇ 15! value is 34.1 dB
  • the processing time of the invention is reduced by about 30%, the cost is saved by about 30%, the external noise immunity is increased by about 20%, and the weight is reduced by about 1/3, and the sound transmission performance is not changed at the same time, and the carrying capacity is convenient and Beautiful.

Abstract

一种听诊器听头，包括听头本体（1，2，8）以及听头本体（1，2）中的导音通道，所述导音通道包括集音面（12，23）、导音孔（D）和侧导音孔（4），所述集音面（12，23）、所述导音孔（D）和所述侧导音孔（4）设于所述听头本体（1，2，8）上且互通；所述听头本体（1，2，8）中的至少一部分是由第二密度材料制成的；所述集音面（12，23）上的导音层（3，5，6，7，9A）的材料密度大于第二密度材料。该听诊器听头（1，2，8）具有重量轻、成本低且不影响听音效果的优点。

Description

一种听诊器听头
技术领域
本发明涉及一种医疗器械配件， 尤其涉及听诊器的配件， 具体为 听诊器听头。 背景技术
因声音在高密度材质中传导的速度快、 衰减小、 听音清晰， 高密 度材料如铜 （密度 8. 9g/cm3 ) 、 钛合金 （密度 7. 82 g/cm3 ) 不锈钢、 钢 （密度 7. 8 g/cm3 ) 、 锌合金 （密度 6. 58. 9g/cm3 ) 等， 固现有技 术的听诊器听头均采用高密度材料制成。但是高密度材料的价格比较 昂贵、 重量重、 且色彩单一， 使用时感觉不轻便。
其次制作听诊器听头常用的材质为钛合金、 铜、 不锈钢等， 用此 类高密度材料加工制作的听诊器耗费的刀具成本非常高，且加工时间 较长， 成本昂贵， 很大程度上增加了消费者的使用成本。
再者， 现有的听诊器听头多为一体式的， 听头形状类似腰鼓状， 两头大中间细， 如果采用铸造法则没法脱模， 故只能通过车加工的方 式制作， 所以工作效率比较低。 发明内容
本发明的目的在于提供一种重量轻、成本低且不影响听音效果的 听诊器听头。
本发明的另一个发明目的是提供一种减轻听诊器重量的方法。 本发明的发明目的是这样实现的：
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上且互通；所述听头本体中的至 少一部分是由第二密度材料制成的；所述集音面上的导音层的材料密 度大于第二密度材料。
进一歩地，所述导音孔内的导音孔导音层材料密度大于第二密度 材料； 进一歩的， 所述导音孔内的导音孔导引层材料密度与所述集音 面上导音层的材料密度相同或者不同。
更进一歩地， 所述听头本体为分体式， 包括相互配合的上听头本 体和下听头本体；所述集音面包括置于所述上听头本体的上集音面和 设置于所述下听头本体的下集音面，所述上集音面和所述下集音面之 间通过所述导音孔导通， 所述导音孔与所述侧导音孔相通； 所述下听 头本体和所述上听头本体使用相同或者不同密度的材料，但至少其中 一个采用第二密度材料制成。
所述听头本体由上听头本体和下听头本体配合组成，且下听头本 体的材料密度和上听头本体的材料密度不同时：
一）所述上听头本体采用第一密度材质材料制成， 所述下听头本体采 用第二密度材质材料制成时，所述第一材料密度大于所述第二材料密 度：
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
所述集音面包括置于所述上听头本体的上集音面和设置有所述 下听头本体的下集音面，所述上集音面和所述下集音面之间通过所述 导音孔导通， 所述导音孔与所述侧导音孔相交并相通；
位于所述下听头本体的所述导音孔一端设有与之过盈配合、公差 配合或螺紋配合的中空铆钉，所述中空铆钉的杆腔沿轴线贯通所述中 空铆钉的两端， 所述中空铆钉帽部与所述下听头本体的一端面吻合， 所述中空铆钉杆端与所述侧导音孔抵接；
位于所述下听头本体的所述导音孔另一端设有与之过盈配合、公 差配合或螺紋配合的异型中空铆钉，所述异型中空铆钉的端部外表面 与所述下听头本体的所述下集音面吻合，所述异型中空铆钉的杆腔沿 轴线贯通所述异型中空铆钉的两端，所述异型中空铆钉的杆端与所述 侧导音孔抵接。
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
所述集音面包括置于所述上听头本体的上集音面和设置有所述下听 头本体的下集音面，所述上集音面和所述下集音面之间通过所述导音 孔导通， 所述导音孔与所述侧导音孔相交并相通；
位于所述下听头本体的所述导音孔一端设有与之过盈配合、公差 配合或螺紋配合的中空铆钉，所述中空铆钉的杆腔沿轴线贯通所述中 空铆钉的两端，所述中空铆钉帽部与所述下听头本体的一端面形状吻 合且紧密配合，所述中空铆钉杆部上设有与所述侧导音孔轴线重合且 孔径相同并贯通双侧杆部管壁的孔；
位于所述下听头本体的所述导音孔另一端设有与之过盈配合、公 差配合、螺紋配合的异型中空铆钉， 所述异型中空铆钉的端部外表面 与所述下听头本体的所述下集音面吻合，所述异型中空铆钉的杆腔沿 轴线贯通所述异型中空铆钉的两端，所述异型中空铆钉杆端与所述中 空铆钉杆端抵接。
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
所述集音面包括置于所述上听头本体的上集音面和设置有所述 下听头本体的下集音面，所述上集音面和所述下集音面之间通过所述 导音孔导通， 所述导音孔与所述侧导音孔相交并相通；
位于所述下听头本体的所述导音孔一端设有与之过盈配合、 、公 差配合、螺紋配合的中空铆钉， 所述中空铆钉的杆腔沿轴线贯通所述 中空铆钉的两端，所述中空铆钉帽部与所述下听头本体的一端面形状 吻合且紧密配合；
位于所述下听头本体的所述导音孔另一端设有与之过盈配合、公 差配合、螺紋配合的异型中空铆钉， 所述异型中空铆钉的端部外表面 与所述下听头本体的所述下集音面完全吻合，所述异型中空铆钉的杆 腔沿轴线贯通所述异型中空铆钉的两端，所述异型中空铆钉杆部上设 有与所述侧导音孔轴线重合且孔径相同并贯通双侧杆部管壁的孔；所 述异型中空铆钉杆部与所述中空铆钉杆部抵接。
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
位于所述下听头本体的所述导音孔内设置有一与之配合的中空 位于所述下听头本体的所述导音孔一端设有与之过盈配合、公差 配合、螺紋配合的中空铆钉， 所述中空铆钉的杆腔沿轴线贯通所述中 空铆钉的两端，所述中空铆钉帽部与所述下听头本体的一端面形状吻 合且紧密配合， 所述中空铆钉杆端与所述中空管的一端抵接；
位于所述下听头本体的所述导音孔另一端设有与之过盈、公差配 合、螺紋配合配合的异型中空铆钉， 所述异型中空铆钉的端部外表面 与所述下听头本体的所述下集音面吻合，所述异型中空铆钉的杆腔沿 轴线贯通所述异型中空铆钉的两端，所述异型中空铆钉的杆端与与所 述中空管的另一端抵接；
所述侧导音孔与所述中空管管腔、所述中空铆钉的杆腔、所述异 型中空铆钉的杆腔相通。
进一歩地，所述中空管上设有与所述侧导音孔相通且至少贯通其 一侧管壁的孔。
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
位于所述下听头本体的所述导音孔内设置有一与之配合的中空 位于所述下听头本体的所述导音孔一端设有与之过盈配合、公差 配合、螺紋配合的中空铆钉， 所述中空铆钉的杆腔沿轴线贯通所述中 空铆钉的两端，所述中空铆钉帽部与所述下听头本体的一端面形状吻 合且紧密配合， 所述中空铆钉杆端与所述中空管的一端抵接；
位于所述下听头本体的所述导音孔另一端设有与之过盈配合、公 差配合、螺紋配合的异型中空铆钉， 所述异型中空铆钉的端部外表面 与所述下听头本体的所述下集音面吻合，所述异型中空铆钉的杆腔沿 轴线贯通所述异型中空铆钉的两端，所述异型中空铆钉的杆端与与所 述中空管的另一端抵接；
所述侧导音孔与所述中空管管腔、所述中空铆钉的杆腔、所述异 型中空铆钉的杆腔相通。
进一歩地，所述中空铆钉的杆部上设有与所述侧导音孔相通的且 至少贯通其一侧管壁的孔。
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
位于所述下听头本体的所述导音孔内设置有与之配合的中空管； 位于所述下听头本体的所述导音孔一端设有与之过盈配合、公差 配合、螺紋配合的中空铆钉， 所述中空铆钉的杆腔沿轴线贯通所述中 空铆钉的两端，所述中空铆钉帽部与所述下听头本体的一端面形状吻 合且紧密配合， 所述中空铆钉杆端与所述中空管的一端抵接；
位于所述下听头本体的所述导音孔另一端设有与之过盈配合、公 差配合、螺紋配合的异型中空铆钉， 所述异型中空铆钉的端部外表面 与所述下听头本体的所述下集音面吻合，所述异型中空铆钉的杆腔沿 轴线贯通所述异型中空铆钉的两端，所述异型中空铆钉的杆端与与所 述中空管的另一端抵接；
所述侧导音孔与所述中空管管腔、所述中空铆钉的杆腔、所述异 型中空铆钉的杆腔相通。
进一歩地，所述异型中空铆钉的杆部上设有与所述侧导音孔轴线 重合且孔径相同的且至少贯通一侧管壁的孔。
二）当所述下听头本体采用第一密度材质材料制成， 所述上听头本体 采用第二密度材质材料制成时；所述第一材料密度大于所述第二材料 密度：
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
所述集音面包括置于所述上听头本体的上集音面和设置有所述 下听头本体的下集音面，所述上集音面和所述下集音面之间通过所述 导音孔导通， 所述导音孔与所述侧导音孔相交并相通；
位于所述上听头本体的所述导音孔一端设有与之过盈配合、公差 配合、螺紋配合的异型中空铆钉， 所述异型中空铆钉的端部外表面与 所述上听头本体的所述上集音面吻合，所述异型中空铆钉的杆腔沿轴 线贯通所述异型中空铆钉的两端，位于所述上听头本体的所述导音孔 的另一端内设有与下听头本体配合的内螺紋；所述下听头本体的一端 外缘设有与所述内螺紋配合的外螺紋。
三） 当所述下听头本体和上听头本体均采用第二密度材料制成时： 一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
所述集音面包括置于所述上听头本体的上集音面和设置有所述 下听头本体的下集音面，所述上集音面和所述下集音面之间通过所述 导音孔导通， 所述导音孔与所述侧导音孔相交并相通；
位于所述上听头本体的所述导音孔一端设有与之过盈配合、公差 配合、螺紋配合的第一异型中空铆钉， 所述第一异型中空铆钉的端部 外表面与所述上听头本体的所述上集音面吻合，所述第一异型中空铆 钉的杆腔沿轴线贯通所述第一异型中空铆钉的两端，位于所述上听头 本体的所述导音孔的另一端内设有与下听头本体配合的内螺紋； 位于所述下听头本体的所述导音孔一端设有与之过盈配合的中 空铆钉， 所述中空铆钉的杆腔沿轴线贯通所述中空铆钉的两端， 所述 中空铆钉帽部与所述下听头本体的一端面形状吻合且紧密配合，所述 中空铆钉杆端与所述侧导音孔抵接；
位于所述下听头本体的所述导音孔另一端设有与之过盈配合的 第二异型中空铆钉，所述第二异型中空铆钉的端部外表面与所述下听 头本体的所述下集音面吻合，所述第二异型中空铆钉的杆腔沿轴线贯 通所述第二异型中空铆钉的两端，所述第二异型中空铆钉的杆端与所 述侧导音孔抵接；
所述下听头本体的一端外缘设有与所述内螺紋配合的外螺紋。 一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
所述集音面包括置于所述上听头本体的上集音面和设置有所述 下听头本体的下集音面，所述上集音面和所述下集音面之间通过所述 导音孔导通， 所述导音孔与所述侧导音孔相交并相通；
位于所述上听头本体的所述导音孔一端设有与之过盈配合、公差 配合、螺紋配合的第一异型中空铆钉， 所述第一异型中空铆钉的端部 外表面与所述上听头本体的所述上集音面吻合，所述第一异型中空铆 钉的杆腔沿轴线贯通所述第一异型中空铆钉的两端，位于所述上听头 本体的所述导音孔的另一端内设有与下听头本体配合的内螺紋； 位于所述下听头本体的所述导音孔一端设有与之过盈配合的中 空铆钉， 所述中空铆钉的杆腔沿轴线贯通所述中空铆钉的两端， 所述 中空铆钉帽部与所述下听头本体的一端面形状吻合且紧密配合，所述 中空铆钉杆部上设有与所述侧导音孔轴线重合且孔径相同并贯通杆 部双侧管壁的孔；
位于所述下听头本体的所述导音孔另一端设有与之过盈配合的 第二异型中空铆钉，所述第二异型中空铆钉的端部外表面与所述下听 头本体的所述下集音面吻合，所述第二异型中空铆钉的杆腔沿轴线贯 通所述第二异型中空铆钉的两端，所述第二异型中空铆钉杆端与所述 中空铆钉杆端抵接；
所述下听头本体的一端外缘设有与所述内螺紋配合的外螺紋。 一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 所述听头本体为分体式， 包 括相互配合的上听头本体和下听头本体；
所述集音面包括置于所述上听头本体的上集音面和设置有所述 下听头本体的下集音面，所述上集音面和所述下集音面之间通过所述 导音孔导通， 所述导音孔与所述侧导音孔相交并相通；
位于所述上听头本体的所述导音孔一端设有与之过盈配合、公差 配合、螺紋配合的第一异型中空铆钉， 所述第一异型中空铆钉的端部 外表面与所述上听头本体的所述上集音面完全吻合，所述第一异型中 空铆钉的杆腔沿轴线贯通所述第一异型中空铆钉的两端，位于所述上 听头本体的所述导音孔的另一端内设有与下听头本体配合的内螺紋； 位于所述下听头本体的所述导音孔一端设有与之过盈配合、公差 配合、螺紋配合的中空铆钉， 所述中空铆钉的杆腔沿轴线贯通所述中 空铆钉的两端，所述中空铆钉帽部与所述下听头本体的一端面形状吻 合且紧密配合；位于所述下听头本体的所述导音孔另一端设有与之过 盈配合的第二异型中空铆钉，所述第二异型中空铆钉的端部外表面与 所述下听头本体的所述下集音面吻合，所述第二异型中空铆钉的杆腔 沿轴线贯通所述第二异型中空铆钉的两端，所述第二异型中空铆钉杆 部上设有与所述侧导音孔轴线重合且孔径相同并贯通杆部双侧管壁 的孔； 所述第二异型中空铆钉杆部与所述中空铆钉杆部抵接；
所述下听头本体的一端外缘设有与所述内螺紋配合的外螺紋。 其中， 所述集音面可以是曲面， 也可是锥面， 也可是曲面或锥面 的组合等。
当听头本体为整体式的时候：
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 听头本体为整体式的、 由第 二密度材料制成的听头本体， 其导音层由形状与所述集音面形状相 同， 并设有贯通底部且与所述导音孔相通的孔， 其导音层或由异型中 空铆钉构成，制成所述异型中空铆钉的材料密度大于所述第二密度材 进一歩的，所述异型中空铆钉的端部外表面与听头本体上的集音 面吻合并紧密配合，所述异型中空铆钉的杆部外表面与导音孔紧密配 合.
进一歩的， 其中异型中空铆钉的杆腔与所述侧导音孔相通。 进一歩的， 所述集音面包括上集音面和下集音面； 所述异型中空 铆钉包括第一异型中空铆钉和第三异型中空铆钉；
所述第一异型中空铆钉的杆腔沿轴线贯通所述第一异型中空铆 钉的两端；所述第三异型中空铆钉的杆腔沿轴线贯通所述第三异型中 空铆钉的两端；
所述第一异型中空铆钉的端部外表面与上集音面吻合且紧密配 合， 所述第一异型中空铆钉的杆部外表面与导音孔紧密配合； 所述第 一异型中空铆钉的杆腔与所述侧导音孔相通；
所述第三异型中空铆钉的端部外表面与上集音面吻合且紧密配 合， 所述第三异型中空铆钉的杆部外表面与导音孔紧密配合； 所述第 三异型中空铆钉的杆腔与所述侧导音孔相通。
进一歩的， 所述集音面包括上集音面和下集音面； 所述异型中空 铆钉包括第一异型中空铆钉和第三异型中空铆钉；
所述第一异型中空铆钉的杆腔沿轴线贯通所述第一异型中空铆 钉的两端；所述第三异型中空铆钉的杆腔沿轴线贯通所述第三异型中 空铆钉的两端；
所述第一异型中空铆钉的端部外表面与上集音面吻合且紧密配 合， 所述第一异型中空铆钉的杆部外表面与导音孔紧密配合； 所述第 一异型中空铆钉的杆腔与所述侧导音孔相通；
所述第三异型中空铆钉的端部外表面与上集音面吻合且紧密配 合， 所述第三异型中空铆钉的杆部外表面与导音孔紧密配合； 所述第 三异型中空铆钉的杆腔与所述侧导音孔相通；第一异型中空铆钉杆端 或第三异型中空铆钉杆端相抵接；
所述第一异型中空铆钉的杆部上或所述第三异型中空铆钉的杆 部上设有一个与所述转轴相通并至少贯通杆部一侧的杆壁并与杆腔 相通的孔。
进一歩的， 所述集音面包括上集音面和下集音面； 所述异型中空 铆钉包括第一异型中空铆钉和第三异型中空铆钉；
所述第一异型中空铆钉的杆腔沿轴线贯通所述第一异型中空铆 钉的两端；所述第三异型中空铆钉的杆腔沿轴线贯通所述第三异型中 空铆钉的两端；
所述第一异型中空铆钉的端部外表面与上集音面吻合且紧密配 合， 所述第一异型中空铆钉的杆部外表面与导音孔紧密配合； 所述第 一异型中空铆钉的杆腔与所述侧导音孔相通；
所述第三异型中空铆钉的端部外表面与上集音面吻合且紧密配 合， 所述第三异型中空铆钉的杆部外表面与导音孔紧密配合； 所述第 三异型中空铆钉的杆腔与所述侧导音孔相通；
所述导音孔内壁上的导音层为中空管，所述中空管的外壁与所述 导音孔内壁紧密配合，所述中空管的两端分别抵接所述第一异型中空 铆钉的杆端和第三异型中空铆钉的杆端； 所述中空管上设有一个与所述侧导音孔相通并至少贯通杆部一 侧的杆壁并与杆腔相通的孔。
一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所 述导音通道包括集音面、 导音孔和侧导音孔， 所述集音面、所述导音 孔和所述侧导音孔设于所述听头本体上； 听头本体为整体式的、 由第 二密度材料制成的听头本体， 其导音层由异型中空铆钉构成， 制成所 述异型中空铆钉的材料密度大于所述第二密度材料；
进一歩的，所述异型中空铆钉的端部外表面与听头本体上的集音 面吻合并紧密配合，所述异型中空铆钉的杆部外表面与导音孔紧密配 合.
进一歩的， 其中异型中空铆钉的杆腔与所述侧导音孔相通； 进一歩的， 所述导音孔内壁上的导音层为中空管， 所述中空管的 外壁与所述导音孔内壁不可转动且不可移动的配合，所述导音管的两 端抵接所述异型中空铆钉的杆端；所述中空管上设有一个与所述侧导 音孔轴线重合且孔径相同并至少贯通杆部一侧的杆壁并与杆腔相通 的孔。
本发明的另一发明目的是这样实现的- 一种减轻听诊器听头重量的方法， 听诊器听头， 包括听头本体以 及听头本体中的导音通道， 所述导音通道包括集音面、导音孔和侧导 音孔，所述集音面、所述导音孔和所述侧导音孔设于所述听头本体上， 提供第一密度材料，至少所述集音面上的导音层使用该第一密度材料 制成， 以保证听诊器听头的传音质量； 提供第二密度材料，至少所述听头本体中的一部分使用该第二密度材 料制成；
所述第二密度材料的密度小于第一密度材料的密度。
进一歩的， 所述导音孔内的导音层使用第三密度材料制成； 所述 第二密度材料的密度小于第三密度材料的密度；第三密度材料的密度 与第一密度材料的密度相同或者不同。
各材料密度如下：如铜（密度 8. 9g/cm3 )、钛合金（密度 7. 82 g/cm 3 ) 不锈钢、 钢 （密度 7. 8 g/cm3 ) 、 锌合金 （密度 6. 58. 9g/cm3 ) 、 铝合金（密度 2. 7 g/cm3 ) ， 工程塑料 （密度 0. 8 g/cm3 -2 g/cm3 ) 、 工程橡胶 (密度 0. 4 g/cm3 -1. 5 g/cm3 ) 等等。
本发明具有以下优点：
由于听头本体采用的低密度材料的配置，因而降低了听头本体自 身的重量； 其次， 由于声音传导过程中的反射基础是导音层， 而导音 层采用的是较高密度材料， 对声波的传导和增加都有良好的性能， 所 以不影响听音的效果， 同时还具有以下优点：
1、 减少高密度材料的使用量，可减去原有高密度材料 50% 以上使用量， 大幅度下降材料的使用成本。
2、 降低高密度材料的加工量（可减去原有高密度材料 40% 以上的加工量，从而减少加工高密度材料所需的高耗费刀具用量和加 工时间， 大幅度下降加工的成本、如采用低密度材料注塑包裹高密度 材料的加工方法、 效率高、 加工成本更低。
3、 降低了重量， 本发明的只有原有重量的 60%, 使用轻 巧携带方便。
4、 丰富了色彩的选择， 同时也提供了多样的色彩搭配， 如两种密度的材料可选用不同的颜色等。
5、 由于采用分体式结构， 上听头部和下听头部可采用铸 造的方式成形，大大改善了现有技术车削加工的难度和降低的工作成 本。
附图说明
图 1为本发明 （单头） 示意图 -1
图 2 为本发明组装 （仅下听头本体为低密度材料） 示意图 -1 图 3为本发明 （仅下听头本体为低密度材料） 示意图 -1
图 4为本发明上听头本体示意图
图 5为本发明中空铆钉示意图 -1
图 6为本发明异型中空铆钉示意图 -1
图 7为本发明下听头本体示意图
图 8为本发明 （仅上听头本体为低密度材料） 组装示意图 -1 图 9为本发明 （仅上听头本体为低密度材料） 示意图
图 10为本发明异型中空铆钉示意图 -2
图 11为本发明 （上下听头本体均为低密度材料） 组装示意图 图 12为本发明 （上下听头本体均为低密度材料） 示意图 -1 图 13为本发明 （听头本体为整体） 示意图 -1
图 14为本发明 （听头本体为整体） 示意图 -2
图 15为本发明 （听头本体为整体） 示意图 -3 图 16为本发明 （听头本体为整体） 示意图 -4
图 17为本发明 （听头本体为整体） 示意图 -5
图 18为本发明中空管示意图 -2
其中图中：
1上听头本体， 11内螺紋， 12上集音面； 2下听头本体， 21端面， 22外螺紋， 23下集音面； 3 中空铆钉， 31杆腔， 32中空铆钉帽部， 33中空铆钉杆端， 34孔， 35杆部； 4侧导音孔； D导音孔； 5第一异 型中空铆钉， 51端部外表面， 52杆腔， 53杆端， 54孔， 55杆部； 5A异型中空铆钉， 51A端部外表面， 52A杆腔， 53A第一异型中空铆 钉杆端， 54A？ L， 55A杆部， 57A钉头， ； 6第二异型中空铆钉， 61 端部外表面， 62杆腔， 63杆部； 7第三异型中空铆钉， 71端部外表 面， 72杆腔， 73杆部， 74杆端， 8听头本体， 9中空管， 91管腔， 92内壁， 93孔， 9A中空管， 91A管腔， 92A内壁， 93A孔。
具体实施方式
为了更确切地描述本发明及其所带来的有益效果，下面将结合附 图对本发明做进一歩描述，但本发明的保护范围并不局限于具体实施 方式所表述的内容。
下面结合对本发明做进一歩的说明：
实施例 1 : 下面结合图 1对本发明做进一歩的说明：
一种听诊器听头， 包括听头本体和听头本体中的导音通道。导音 通道包括下集音面 23、 导音孔 D和侧导音孔 4。 下集音面 23、 导音 孔 D和侧导音孔 4设于下听头本体 2上。 下集音面 23上紧密配合导音层； 导音层为第一异型中空铆钉 5， 第一异型中空铆钉 5的端部外表面 51与下集音面 23吻合并紧密配 合， 第一异型中空铆钉 5的杆部 55外表面与导音孔 D紧密配合。
其中第一异型中空铆钉 5的杆腔 52贯通第一异型中空铆钉 5的 两端。 杆腔 52与侧导音孔 4相通。
第一异型中空铆钉 5的杆部 55上设有一个贯通杆部 55一侧的杆 壁并与杆腔 52相通的孔 54。 孔 54与侧导音孔 4相通。
加工中， 首先铸件， 形成下听头本体 2， 并在下听头本体 2上开 设导音孔 D和侧导音孔 4， 然后将第一异型中空铆钉 5的杆部 55置 入导音孔 D内。
也可是： 先制备好第一异型中空铆钉 5， 然后通过注塑的方式， 将下听头本体 2不可转动和移动的覆盖于第一异型中空铆钉 5的杆部 55和端部外表面 51， 从而形成第一异型中空铆钉 5和下听头本体 2 紧密配合的一体结构。
实施例 2， 下面结合图 17和图 18对本发明做进一歩的说明；
一种听诊器听头， 包括听头本体和听头本体中的导音通道。导音 通道包括下集音面 23、 导音孔 D和侧导音孔 4。 下集音面 23、 导音 孔 D和侧导音孔 4设于下听头本体 2上。
下集音面 23上紧密配合导音层； 导音层为第一异型中空铆钉 5， 第一异型中空铆钉 5的端部外表面 51与下集音面 23吻合并紧密配 合， 第一异型中空铆钉 5的杆部 55外表面与导音孔 D紧密配合。
其中第一异型中空铆钉 5的杆腔 52贯通第一异型中空铆钉 5的 两端。 杆腔 52与侧导音孔 4相通。
进一歩地， 导音孔 D内壁也可设由铝合金制成的导音层。导音层 为一端封闭的中空管 9A; 中空管外壁与导音孔 D 内壁紧密配合， 配 合方式可以是公差配合或螺紋配合等紧密配合。
第一异型中空铆钉 5的杆端 53与中空管 9A的开口端可以是相邻 但不接触， 也可以是相抵接。
第一异型中空铆钉 5和中空管 9A为不锈钢材、 铜、 铝合金、 钢 等材质制成， 下听头本体 2是工程塑料或工程橡胶等材质制成。
实施例 3 : 下面结合附图 2、 3、 4、 5、 6、 7对本发明做进一歩说明： 一种听诊器听头， 由分体的上听头本体 1和下听头本体 2， 两相 背的位于上听头本体 1的上集音面 12和下听头本体 2的下集音面 23 和位于下听头本体 2上的侧导音孔 4， 以及中空铆钉 3和第一异型中 空铆钉 5组成。
其中， 上听头本体 1上设有内螺紋 1 1和下听头本体 2设有外螺 紋 22， 上听头本体 1和下听头本体 2通过内螺紋 11和外螺紋 22配 合固定；
导音孔 D贯通上听头本体 1和下听头本体 2， 上集音面 12和下集音 面 23通过导音孔 D连通， 导音孔 D与侧导音孔 4相交并相通； 上听 头本体 1采用不锈钢制成， 下听头本体 2采用工程塑料制成。位于下 下听头本体 2的导音孔 D—端设有与之过盈配合的中空铆钉 3。 中空 铆钉 3的杆腔 31沿轴线贯通中空铆钉 3的两端，中空铆钉帽部 32与 下听头本体 2的一端面 21形状吻合且紧密配合， 中空铆钉 3的杆部 与导音孔 D紧密配合， 中空铆钉杆端 33与侧导音孔 4抵接； 位于下 听头本体 2的导音孔 D另一端设有与之过盈配合的第一异型中空铆钉 5，第一异型中空铆钉 5的端部外表面 51与下听头本体 2的下集音面 23完全吻合， 中空铆钉 5的杆部与导音孔 D紧密配合， 第一异型中 空铆钉 5的杆腔 52沿轴线贯通第一异型中空铆钉 5的两端， 第一异 型中空铆钉杆端 53与侧导音孔 4抵接。
实施例 4: 下面结合图 8、 9、 10对本发明做进一歩的说明：
一种听诊器听头， 由上听头本体 1和下听头本体 2， 两相背的位 于上听头本体 1曲面状的上集音面 12和下听头本体 2的下集音面 23 和位于下听头本体 2上侧导音孔 4， 以及第二异型中空铆钉 6组成。
其中， 上听头本体 1上的设有内螺紋 1 1和下听头本体 2设有外 螺紋 22， 上听头本体 1和下听头本体 2通过内螺紋 11和外螺紋 22 配合固定。
导音孔 D贯通上听头本体 1和下听头本体 2， 上集音面 12和下 集音面 23通过导音孔 D连通， 导音孔 D与侧导音孔 4相交并相通。
上听头本体 1采用工程橡胶制成，下听头本体 2采用锌合金材料 制成。
位于上听头本体 1的导音孔 D—端设有与之过盈配合的第二异型 中空铆钉 6， 第二异型中空铆钉 6的端部外表面 61与上听头本体 1 的上集音面 12完全吻合，第二异型中空铆钉 6的杆腔 62沿轴线贯通 第二异型中空铆钉 6的两端， 杆部 63置于导音孔 D内， 且杆部 63的 外表面与导音孔 D的内壁紧密配合，位于上听头本体 1的导音孔 D的 另一端内设有与下听头本体配合的内螺紋 11。
实施例 5: 下面结合图 4、 5、 6、 7、 10、 11、 12对本发明做进一歩 的说明：
一种听诊器听头， 由上听头部 1和下听头部 2， 两相背的位于上 听头部 1的上集音面 12和下听头部 2的下集音面 23， 位于下听头部 2上的侧导音孔 4和导音孔 D, 以及中空铆钉 3和第一异型中空铆钉 5组成。
其中，上听头部 1上设有内螺紋 11和下听头部 2设有外螺紋 22 , 上听头部 1和下听头部 2通过内螺紋 11和外螺紋 22配合固定；
导音孔 D贯通上听头本体 1和下听头本体 2， 上集音面 12和下 集音面 23通过导音孔 D连通， 导音孔 D与侧导音孔 4相交并相通。
上听头部 1和下听头部 2均采用工程塑料、 或工程橡胶制成时， 中空铆钉 3和第一异型中空铆钉 5可采用如铜 （密度 8. 9g/cm3 ) 、 钛合金 （密度 7. 82 g/cm3 ) 、 不锈钢、 钢 （密度 7. 8 g/cm3 ) 、 锌合 金 （密度 6. 58. 9g/cm3 ) 、 铝合金（密度 2. 7 g/cm3 ) 等的材料密度大 于工程塑料或工程橡胶材料密度的材料制备。
上听头部 1和下听头部 2均采用铝合金材料制备时， 中空铆钉 3 和第一异型中空铆钉 5可采用如铜 （密度 8. 9g/cm3 ) 、 钛合金 （密 度 7. 82 g/cm3 ) 、 不锈钢、 钢 （密度 7. 8 g/cm3 ) 、 锌合金 （密度 6. 58. 9g/cm3 ) 等的材料密度大于铝合金材料的密度的材料制备。
位于上听头本体 1的导音孔 D—端设有与之过盈配合的第二异型 中空铆钉 6， 第二异型中空铆钉 6的端部外表面 61与上听头本体 1 的上集音面 12完全吻合，第二异型中空铆钉 6杆腔 62沿轴线贯通第 二异型中空铆钉 6的两端，位于上听头本体 1的导音孔 D的另一端内 设有与下听头本体 2配合的内螺紋 11。
位于下听头部 2的导音孔 D—端设有与之过盈配合的中空铆钉 3， 中空铆钉 3的杆腔 31沿轴线贯通中空铆钉 3的两端， 中空铆钉帽部 32的下端面与下听头部 2的一端面 21形状吻合且紧密配合， 中空铆 钉杆端 33与侧导音孔 4抵接； 位于下听头部 2的导音孔 D另一端设 有与之过盈配合的第一异型中空铆钉 5， 第一异型中空铆钉 5的端部 外表面 51与下听头部 2的下集音面 23完全吻合，第一异型中空铆钉 5的杆腔 52沿轴线贯通第一异型中空铆钉 5的两端， 第一异型中空 铆钉杆端 53与侧导音孔 4抵接。
实施例 6: 下面结合图： 13、 14、 15、 16对本发明做进一歩的说明： 听诊器听头， 包括听头本体 8以及听头本体中的导音通道， 导音 通道包括集音面、 导音孔 D和侧导音孔 4;
听头本体 8为整体式的、 由工程橡胶制成的听头本体 8;
上集音面 12上的导音层由第一异型中空铆钉 5构成， 第一异型 中空铆钉 5由铜制成； 下集音面 23上的导音层由第三异型中空铆钉 7构成， 第三异型中空铆钉 7由钛合金制成；
进一歩的， 第一异型中空铆钉 5的端部外表面 51与上听头本体 1上的上集音面 12吻合并紧密配合， 第一异型中空铆钉 5的杆部外 表面与导音孔 D紧密配合；
第三异型中空铆钉 7的端部外表面 71与下听头本体 2上的下集 音面 23吻合并紧密配合，第三异型中空铆钉 7的杆部 73外表面与导 音孔 D紧密配合；
进一歩的， 其中第一异型中空铆钉 5的杆腔 52贯通第一异型中 空铆钉 5的两端且与侧导音孔 4相通； 第三异型中空铆钉 7的杆腔 72贯通第三异型中空铆钉 7的两端且与侧导音孔 4相通；
结合图 13和图 14可知，第一异型中空铆钉 5的杆端与侧导音孔 4抵接并相通，第三异型中空铆钉 7的杆端与侧导音孔 4抵接并相通。
进一歩地， 结合图 15可知， 第三异型中空铆钉 7的杆部 73上设 有一个与侧导音孔 4轴线重合且孔径相同并贯通杆部 73杆壁并与杆 腔相通的孔；第一异型中空铆钉 5的杆端第三异型中空铆钉 7的杆端 抵接。
也可是： 结合图 16可知， 第一异型中空铆钉 5的杆部 55上设有 一个与侧导音孔 4轴线重合且孔径相同并贯通杆部 73杆壁并与杆腔 相通的孔；第三异型中空铆钉 7的杆端第一异型中空铆钉 5的杆端抵 接。
实施例 7: 结合图 13、 14、 15、 16可知
一种减轻听诊器听头重量的方法， 听诊器听头， 包括听头本体 8 以及听头本体中的导音通道， 导音通道包括上集音面 12、 下集音面 23、 导音孔 D和侧导音孔 4;
采用不锈钢钢制备第一异型中空铆钉 5和第三异型中空铆钉 7; 听头本体 8采用工程塑料制备； 其中， 听头本体 8可以是分体的 也可是整体式的； 第一异型中空铆钉 5的端部外表面 51与听头本体 8上的上集音 面 12吻合并紧密配合，第一异型中空铆钉 5的杆部 55外表面与导音 孔 D紧密配合；
第三异型中空铆钉 7的端部外表面 71与听头本体 8上的下集音 面 23吻合并紧密配合， 第三异型中空铆钉 7的杆部外表面与导音孔 D紧密配合；
实施例 8: 结合图 9对本发明做进一歩的说明。
一种减轻听诊器听头重量的方法： 听诊器听头， 包括上听头本体 1和下听头本体 2以及第二异型中空铆钉 6;
上听头本体 1上设有曲面状的上集音面 12， 下听头本体 2上设 有的下集音面 23和侧导音孔 4， 其中， 上听头本体 1上的设有内螺 纹 11和下听头本体 2设有外螺紋 22 , 上听头本体 1和下听头本体 2 通过内螺紋 11和外螺紋 22配合固定。
导音孔 D贯通上听头本体 1和下听头本体 2， 上集音面 12和下 集音面 23通过导音孔 D连通， 导音孔 D与侧导音孔 4相交并相通。
采用工程橡胶制备上听头本体 1 ;
采用不锈钢制备下听头本体 2 ;
采用铝合金制备第二异型中空铆钉 6;
位于上听头本体 1的导音孔 D—端设有与之过盈配合的第二异型 中空铆钉 6， 第二异型中空铆钉 6的端部外表面 61与上听头本体 1 的上集音面 12完全吻合，第二异型中空铆钉 6的杆腔 62沿轴线贯通 第二异型中空铆钉 6的两端，位于上听头本体 1的导音孔 D的另一端 内设有与下听头本体配合的内螺紋 11。
下面通过本发明和现有技术的对比，进一步说明本法明的显著优 点。
其中，现有技术采用的均为无锡市凯顺医疗器械制造有限公司生 产的听诊器。
检测中所述的集音腔为将覆盖膜片固定在听头本体的集音面上 形成的腔体。
听诊器传音性能测试测试方法：
1、 用听诊器头的集音腔放在发音源上的密封连接件上使听诊器头的 集音平面（也就是膜片）正对音源出音口同时其连接处， 处于密封状 态； 音源出音口与听诊器头集音平面的垂直距离为 8-10mm。
2、用直径为 10mm、 孔径为 4mm、 长度为 40cm导音管的一端接在听诊 器听头的导音接头上， 另一端接在音频接收器上。
3、 打开音源发生器和音频接收器， 记下接收器数值再用此数值除以 音源发生器的标准数值，以此数据为基础就可以得出听诊器传音性能 值。
听诊器抗外部噪音性能测试测试方法：
1、 用听诊器头集音腔的背面， 放在发音源密封连接件上面使听诊器 头的集音腔背面正对音源出音口同时其连接处， 处于密封的状态； 出 音口与听诊器头集音平面的垂直距离为 4-6mm。
2、 用直径为 10mm孔径为 4mm， 长度为 40cm导音管的一端接在听诊 器听头的导音接头上， 另一端接在音频接收器上。 3、 打开音源发生器和音频接收器， 记下接收器数值再用此数值除以 音源发生器的标准数值，以此为数据为基础就可以得出听诊器的外部 抗噪性能值。
对比例 1: 结合实施例 1， 本发明分别与无锡市凯顺医疗器械制造有 限公司 KS-410A型、 KS-410B型、 KS-410C型听诊器进行对比， 可知 本发明加工时间节省近 1/4， 费用节省超过 1/3， 外部抗噪能力增强 近 1/5， 重量减轻近 1/3左右， 于此同时传音性能无明显变化， 且携 带方便和美观。
本发明与 KS-410A型对比数据如下:
本: S-410A 数据对 fcb*S果 方式 可分体高低密度材料组合 単一萵密度材料
卨密) &材料名称 不¾^？ (304) 不统钢 （304〉
*籍用量和费用 30克 0.035 f^. 克： D.035元疾
=1.05元 =2.97元
<氐密度材料名称 POM 甲薛 >
！ 14克 0.0255t ¾=Q.35元
* 用量和费用
耗费刀具费用 1.S57C 2.23 元
加工时间和费用 258^>Χ0.011元/^ 341秒 0.011元/ 力。工时 nsm省 4%
=2.se元 =3.75元
费用合计 6.11 元 8.95 元 总费用可节省 32% 性能？ H!fi¾ 声源 114dB 1000HZ 声源 114dB 1000HZ 传音性能无明显变
(用昕 器音腔 实 Μβ为 109 dB 实测值为 109.6 dB 化
5^声源） 声源 114dB 500HZ 声源 114dB 500HZ
实 ¾¾鎮为 102 dB 实测值为 101 dB
喿' IS能 ¾ΡίΙ 声源 114dB 1000HZ 声源 114dB 1000HZ 外部抗矂能力増强 试 实 为 35 dB 实测值为 42.d dB 18% -21%
(用昕^器背部 声源 U4dB 500HZ 声源 114dB 500HZ
5^声源） 实 ¾¾値为 28 dB 实 值为 35.3 dB
美¾¾¾ (叹色搭 可 ¾½答西 e 色 增强枧^ ¾果 酉
¾f更度 C重 44 克 85 克 摸带轻便
本发明与 KS- 410B型对比数据如下:
Figure imgf000028_0001
本发明与 KS-410C型对比数据如下：
替换页 （细则第 26条)
Figure imgf000029_0001
对比例 2: 结合实施例 2, 本发明分别与无锡市凯顺医疗器械制造有 限公司 KS-450A型、 KS- 450B型、 KS- 450C型听诊器进行对比， 可知 本发明加工时间节省 1/4左右， 费用节省 1/3左右，外部抗噪能力增 强 1/5左右， 重量减轻 1/3左右， 于此同时传音性能无明显变化， 且 携带方便和美观。
本发明与 KS-450A型对比数据如下：
替换页 （细则第 26条)
Figure imgf000030_0001
KS-450B型对比数据如下:
Figure imgf000030_0002
替换页 （细则第 26条) 本发明与 KS-450C型对比数据如下:
Figure imgf000031_0001
对比例 3: 结合实施 3, 本发明 （上听头本体采用单一高密度材料， 下听头本体采用高、低密度材料组合）分别与无锡市凯顺医疗器械制 造有限公司 KS- 500A型、 KS- 500B型、 KS- 500C型听诊器进行对比： 本发明与 KS- 500A型对比数据如下：
替换页 （细则第 26条
Figure imgf000032_0001
本发明与 KS-500B型对比数据如下:
Figure imgf000032_0002
替换页 （细则第 26条) 本发明与 KS- 500C型对比数据如下:
Figure imgf000033_0001
综上可知， 本发明加工时间节省 30%左右， 费用节省 30%左右， 外部 抗噪能力增强 20%左右， 重量减轻近 30%， 于此同时传音性能无明显 变化， 且携带方便和美观。
对比例 4: 结合实施例 4， 本发明 （上听头本体采用采用高、 低密度 材料组合，下听头本体采用单一高密度材料）分别与无锡市凯顺医疗 器械制造有限公司 KS-510A型、 KS-510B型、 KS- 510C型听诊器进行 对比：
本发明和 KS-510A型对比数据如下： 替换页 （细则第 26条)
Figure imgf000034_0001
本发明和 KS-510B型对比数据如下:
Figure imgf000034_0002
替换页 （细则第 26条) 本发明和 KS-510C型对比数据如下:
Figure imgf000035_0001
综上可知， 本发明加工时间节省 30%左右， 费用节省 30%左右， 外部 抗噪能力增强 20%左右， 重量减轻近 1/3左右， 于此同时传音性能无 明显变化， 且携带方便和美观。
对比例 5: 结合实施例 5， 本发明 （上听头本体、 下听头本体均采用 采用高、低密度材料组合）分别与无锡市凯顺医疗器械制造有限公司 KS-520A型、 KS-520B 型、 KS- 520C型听诊器进行对比：
本发明和 KS-520A型对比数据如下：
替换页 （细则第 26条) s^ffioj 号 本发明 S-520A 数 果 结构方式 上听头本体和下听头 単一 ¾ ^度
本体均采用高、 f氐密度
材料组合
高密度材 称 不诱钢 (304) 不親钢 （304)
材料用量和费用 32 克 0.035 元 /克 101 克 X0.035 元/克
=1.12元 =3.53元
κ密度衬 称 POM (聚甲涯）
材料用重和费用 21 克 0.025 元 /克
=0.52元
耗费刀具费用 2.27元 2.85 元
加工时间和费用 287 秒 0.011 元 /秒 396 秒 X0.011 元 /秒 加 Bir¾m省 28%
=3.16元 =4.36元
费用合计 7.0Γ7 元 10.74 元 总费用可节省 33°/。 传音注能 赋 声源 114dB 1000HZ ^ .114dB lOOOHZ 传音注能无明显变 (用听 ^器音腔采 实测值为 113.5dB SSSHI值为 112.3dB 化
声源 114dB 500HZ 114dB 500HZ
实 ¾¾«值为 103.3 dB ! 1值为 102.1 dB
抗夕 矂' 测试 声源 114dB 1000HZ ^W- 114dB lOOOHZ 外¾¾^矂能力增强 (用听 器背部采 实 ¾1值为 32.7dB SeS!！值为 41.E>dB 20%
声源 114dB 500HZ 114dB 500HZ
实测值为 25.7dB 5^15!)值为 34.1 dB
美輕 荅配） 可 ¾ ^荅配 单色 增强视 ^¾巣
53 克 98 克 携帝轻便
本发明和 KS-520B型对比数据如下:
Figure imgf000036_0001
替换页 （细则第 26条) 本发明和 KS-520C型对比数据如下:
Figure imgf000037_0001
综上可知， 本发明加工时间节省 30%左右， 费用节省 30%左右， 外部 抗噪能力增强 20%左右， 重量减轻近 1/3左右， 于此同时传音性能无 明显变化， 且携带方便和美观。
替换页 （细则第 26条)

Claims

权 利 要 求
1. 一种听诊器听头， 包括听头本体以及听头本体中的导音通道， 所述导音通 道包括集音面、 导音孔和侧导音孔， 所述集音面、 所述导音孔和所述侧导音孔 设于所述听头本体上且互通； 其特征在于， 所述听头本体中的至少一部分是由 第二密度材料制成的； 所述集音面上的导音层的材料密度大于第二密度材料。
2. 根据权利要求 1 所述的一种听诊器听头， 其特征在于， 所述导音孔内的导 音层材料密度大于第二密度材料； 所述导音孔内的导音层的材料密度与所述集 音面上导音层的材料密度相同或者不同。
3. 根据权利要求 1 或 2 所述的一种听诊器听头， 其特征在于， 所述听头本体 为分体式， 包括相互配合的上听头本体和下听头本体； 所述集音面包括置于所 述上听头本体的上集音面和设置于所述下听头本体的下集音面， 所述上集音面 和所述下集音面之间通过所述导音孔导通， 所述导音孔与所述侧导音孔相通； 所述下听头本体和所述上听头本体使用相同或者不同密度的材料制成， 但至少 其中一个采用第二密度材料制成。
4. 根据权利要求 3 所述的一种听诊器听头， 其特征在于， 所述上听头本体采 用第一密度材料制成， 所述下听头本体采用第二密度材料制成， 所述第一材料 密度大于所述第二材料密度。
5. 根据权利要求 3 所述的一种听诊器听头， 其特征在于， 所述下听头本体采 用第一密度材质材料制成， 所述上听头本体采用第二密度材质材料制成， 所述 第一材料密度大于所述第二材料密度。
6. 根据权利要求 3 所述的一种听诊器听头， 其特征在于， 所述下听头本体和 上听头本体均采用第二密度材料制成。
7. 根据权利要求 1 或 2 所述的一种听诊器听头， 其特征在于， 所述听头本体 为整体式的且由第二密度材料制成， 导音层的材料密度大于所述第二密度材 料， 所述听头本体至少有一个集音面。
8. 一种减轻听诊器听头重量的方法， 听诊器听头， 包括听头本体以及听头本 体中的导音通道， 所述导音通道包括集音面、 导音孔和侧导音孔， 所述集音 面、 所述导音孔和所述侧导音孔设于所述听头本体上， 其特征在于， 提供第一 密度材料， 至少所述集音面上的导音层使用该第一密度材料制成， 以保证听诊 器听头的传音质量； 提供第二密度材料， 至少所述听头本体中的一部分使用该 第二密度材料制成； 所述第二密度材料的密度小于第一密度材料的密度。
9. 根据权利要求 19所述的一种减轻听诊器听头重量的方法， 其特征在于， 所 述导音孔内的导音层使用第三密度材料制成； 所述第二密度材料的密度小于第 三密度材料的密度； 第三密度材料的密度与第一密度材料的密度相同或者不 同。
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HUE041972T2 (hu) 2019-06-28
US9420987B2 (en) 2016-08-23
DE212013000116U1 (de) 2014-12-18
EP2851005B1 (en) 2018-12-19
PL2851005T3 (pl) 2019-06-28
EP2851005A1 (en) 2015-03-25
US20150164465A1 (en) 2015-06-18
ES2716563T3 (es) 2019-06-13

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