WO2005053773A1

WO2005053773A1 - Blood vessel seeking method and vein seeking device

Info

Publication number: WO2005053773A1
Application number: PCT/CN2003/001033
Authority: WO
Inventors: Thomas Chen; Sankai Lee
Original assignee: Thomas Chen; Sankai Lee
Priority date: 2003-12-03
Filing date: 2003-12-03
Publication date: 2005-06-16
Also published as: AU2003296194A1

Abstract

The invention relates to a blood vessel seeking method and a vein seeking device, wherein said blood vessel seeking method includes step hereinafter: (a) closing at least one solid state lighting source with the wavelength between 550 and 650nm and at least one near touching device to the tissue (4); (b) said near touching device induces the tissue signal; (c) said near touching device touches off said solid state lighting source to transmit a beam; and (d) said solid state lighting source transmits the beam to irradiate the tissue (4). Said vein seeking device includes: a main body (2) which is provided projectingly a solid state lighting source with the wavelength between 550 and 650nm on its surface, the length which said solid state lighting source project said main body (2) surface is between 3 and 30mm, and its diameter is between 3 and 15mm. Said vein seeking device may further include: a main body (2); at least one solid state lighting source, which is provided by the main body (2); at least one near touching device, which is provided by said main body (2), said near touching device is connected to said solid state lighting source.

Description

Blood vessel searching method and vein finder

The present invention relates to a blood vessel searching method and a vein searching device, in particular to a blood vessel searching method which can prevent a user's eyes from being irradiated by light emitting diodes, and a vein searching device which can implement the above method. By using the difference between the spectral absorption of tissues and blood vessels, a color contrast can be generated to find the position of blood vessels in the tissues, which can facilitate medical staff to make intravenous injections to patients. Background technique

It is the most basic and frequent medical treatment in modern medicine to find and then use the blood vessels in tissues. The blood vessels found can be used for blood extraction to provide medical tests, injections, infusions, catheterization, ligation surgery, and relaxation. General surgery and sclerosis surgery; but finding blood vessels in the tissue is often an uncertain job for the operator, but it is a painful and disturbing experience for the patient, especially for some, such as: young age In the case of children, high melanin skin, obese people, edema, phlebitis, hematoma and other special medical treatments, the patients' blood vessels cannot be directly judged by the naked eye, which makes medical staff more difficult in the medical office, and Patients need to suffer more and suffer more. They often get a few more shots. In addition, they will consume a lot of medical manpower and materials.

Currently, the known techniques for finding blood vessels in tissues are the transillumination method (Trans i 11 and i na ti on) and the backscattering method. The transillumination method is to use a high-power light source, such as: a halogen lamp, which uses the difference in light absorption between tissues and blood vessels to generate color contrast. The light is used to find the relative position of blood vessels in the tissue and expose the blood vessels. Need high-power light source The high-energy power source generates a large amount of thermal energy, which may cause the possibility of burns for patients, and it is difficult to reduce the size of the instrument significantly, which leads to inconvenience in operation.

A known technique for finding blood vessels in a tissue, such as: VEN 0 SC 0 P Ε Π, is composed of a main body and two extension arms, and a plurality of light emitting diodes are arranged in the two extension arms, and the ends of the extension arms have a V-shaped structure. The light emitting diode is arranged inside the V-shaped structure. When looking for blood vessels in the tissue by back scattering, the V-shaped structure can block the light on the side of the light-emitting diode and reduce the intensity of the side light and the reflected light on the surface of the tissue, but this V-shaped structure hinders The light-emitting diode is deeply pressed into the tissue, and thus the judgment of the position of the blood vessel cannot be improved. When the blood vessels in the tissue are searched by transillumination, this V-shaped structure hinders the light-emitting diode from deep-pressing into the tissue, reducing the degree of transillumination of light, and affecting the Vessel position determination.

In addition, if the patient removes his limbs arbitrarily due to fear, often the eyes of the medical staff are dazzled by strong light, which will cause a temporary dimness in front of the eyes. Wait for a few minutes until the eyes of the medical staff return to normal before proceeding again. Finding the position of blood vessels. Therefore, sometimes two to three people are often required to complete this task, which is quite labor-intensive and time-consuming. Therefore, the known methods for finding blood vessels in tissues have the following disadvantages: The user is exposed to light sources when searching for blood vessels. Glare exposure can cause problems such as dimness, tingling, or discomfort in the user's eyes.

The present inventor is well aware of the structure of the currently known technology, and its various problems such as lack and inconvenience in use. Based on the inventor's many years of experience in medical work, through continuous research and development, the vascular search method of the present invention has finally been developed. And vein finder. Summary of the invention

The technical problem to be solved by the present invention is to provide a blood vessel searching method which can prevent the eyes of a user from being illuminated by a light emitting diode.

Another technical problem to be solved by the present invention is to provide: The vein finder of the user's eyes uses a light-emitting diode provided on the surface of the main body to press the tissue into the tissue to increase the degree of light transmission, and the proximity device can be used to bring the main body of the finder closer. During the tissue, the proximity device can enhance the light intensity of the light-emitting diode, thereby improving the accuracy of determining the position of the blood vessel in the tissue, and avoiding the eyes of the medical staff being suddenly irradiated by the light-emitting diode.

Another technical problem to be solved by the present invention is to provide a light-emitting diode with a reflective layer, which is applied to finding blood vessels.

To this end, a method for finding blood vessels provided by the present invention includes at least the following steps:

(a) close at least one solid-state light source with a wavelength of 550 to 65 On m and at least one proximity device to the tissue;

(b) the proximity device senses a tissue signal;

(c) the proximity device triggers the solid-state light source to emit light; and

(d) The solid-state light source emits light to irradiate the tissue.

Wherein, the step (a) further includes the following steps: a step of pressing the proximity device to the tissue, and a step of pressing the solid-state light source into the tissue.

The solid-state light source in the step (a) is composed of a light emitting diode or a light emitting diode including an optical component.

The present invention further provides a vein finder, including:

A subject

At least one solid-state light source with a wavelength of 550 to 650 nm is convexly disposed on the surface of the main body. The length of the solid-state light source protruding from the surface of the main body is 3 to 30 mm, and its diameter is 3 to 15 mm.

The side of the solid-state light source further includes a reflective layer.

The vein finder described above further includes at least one proximity device provided on the main body, 3 001033 The proximity device is connected to the solid-state light source.

The above solid-state light source is composed of any one of a light-emitting diode integrally formed or a light-emitting diode including an optical element.

The present invention also provides a vein finder, which includes:

A subject

At least one solid-state light source disposed on the main body;

At least one proximity device is disposed on the main body, and the proximity device is connected to the solid-state light source. The solid-state light source is composed of a light-emitting diode integrally formed or a light-emitting diode including an optical element. The proximity device is a proximity sensor or a mechanical switch.

As described in the vein finder, the proximity sensor is composed of a photoelectric switch.

As described in the vein finder, the photoelectric switch is composed of a photo interrupter.

As described in the vein finder, the mechanical switch is composed of a limit switch.

The present invention also provides a light-emitting diode for searching for blood vessels, which includes a chip, a holder for holding the chip, and a lead wire. A bowl is formed on the holder and the chip is placed on the holder. The holder is thickened to deepen the depth of the bowl for the chip. Above 0.6 mm, a bracket heat sink is provided at the bottom of the bracket, and a lens is arranged above the bracket, wherein a reflective layer is provided on the side of the lens.

The advantages and characteristics of the invention are:

1. The method for searching veins proposed by the present invention, by using a proximity device to approach the tissue, when the proximity device senses a tissue signal and simultaneously triggers the light emitting diode to emit light to illuminate the tissue, the eyes of the user can be prevented from being illuminated by the light emitting diode.

2. The vein finder provided by the present invention uses a light emitting diode provided on the surface of the main body, and the light emitting diode protrudes from the surface of the main body by about 3-30 mm, and the diameter is about 3 ~ 15 mm. This can effectively improve the accuracy of blood vessel position judgment. 3. The present invention is a vein finder for finding blood vessels in a tissue, which uses a reflective layer on the side of the light emitting diode to reduce the intensity of light emitted from the side of the light emitting diode to reduce the intensity of reflected light on the surface of the tissue, and uses the reflective layer on the side of the light emitting diode. The light on the side of the light-emitting diode is collected and emitted from the front end to enhance the luminous intensity and accurately determine the position of the blood vessel.

4. The present invention is very simple and light in operation. With several hooking grooves provided by the vein finder, the user can embed the belt in the hooking grooves and surround the tissue, so that the present invention The invented vein finder is fixed on the tissue, it can be easily completed by only one person, and the correct position of the blood vessel to be needled can be quickly found, which can reduce the time consumption of the medical staff and reduce the pain of the patient.

5. The donor vein finder according to the present invention, when the proximity device approaches the tissue, the proximity device can enhance the light intensity of the light emitting diode to irradiate the tissue. When the patient inadvertently removes the tissue from the finder, the proximity device The device can control the light-emitting diode to automatically extinguish or reduce the light intensity, thereby overcoming the defects existing in the prior art, so that the eyes of the medical staff can be prevented from being suddenly irradiated by the strong light of the light-emitting diode, and the operation is safer for the operator. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic perspective view of Embodiment 1 of the present invention;

2 is a schematic front view of Embodiment 1 of the present invention;

3 is a schematic top view of Embodiment 1 of the present invention;

FIG. 4 is a first schematic view of a use state according to the first embodiment of the present invention; FIG.

FIG. 5 is a second schematic diagram of a use state according to the first embodiment of the present invention; FIG.

FIG. 6 is a schematic perspective view of a specific structure of Embodiment 2 of the present invention; FIG.

FIG. 7 is a schematic perspective view of a specific structure of Embodiment 3 of the present invention; FIG.

8 is a schematic front view of Embodiment 3 of the present invention; 9 is a schematic plan view of a third embodiment of the present invention;

FIG. 10 is a perspective view of a specific structure of a fourth embodiment of the present invention

11 is a cross-sectional view of a known light emitting diode;

FIG. 12 is a cross-sectional view of a light emitting diode of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

2.Main body 2 1.Power switch 2 2.Low voltage display device

2 3. Brightness adjustment device 24. Set up a groove 2 5. Circuit board

3.Band 4.Tissue 41.Vascular

5.Light-emitting diode 5 1.Reflective layer 6.Proximity sensor

5 2.Light-emitting diodes with optical elements 7.Limit switches

8. Heat sink 42. Eyes of medical staff 44. Light

Cl, chip C2, holder C3, lens

C4 、 Reflective layer

Light Emitting Diodes are solid state light sources that use grains to emit light. There are two types of light emitting diode packaging structures: integrated light emitting diodes and light emitting diodes containing optical elements, and light emitting diodes containing optical elements. An optical component is mainly provided outside the light-emitting diode. The optical component is used to adjust the viewing angle of the light-emitting diode. The optical component is preferably composed of acrylic plastic. The light-emitting diode is divided into a resonant cavity light-emitting diode (Resonant Cavity Light Emitting Diode), Polymer Light Emitting Diodes, Organic Light Emitting Devices (OLEDs), Conjugated Polymer Light Emitting Diode), Metal-Oxide-Silicon Light Emitting Diodes and other types.

A method for finding blood vessels provided by the present invention includes at least the following steps:

(a) close at least one solid-state light source with a wavelength of 550 to 650 nm and at least one proximity device to the tissue;

(b) the proximity device senses a tissue signal;

(d) The solid-state light source emits light to irradiate the tissue.

The above step) further includes the following steps: a step of compressing the above-mentioned proximity device with the tissue.

The step (a) further includes the following steps: a step of pressing the solid-state light source into the tissue.

Wherein, the solid-state light source in the step (a) is composed of a light emitting diode or a light emitting diode including an optical component.

In order to realize the above-mentioned blood vessel searching method, the present invention proposes a vein finder, as shown in FIGS. 1, 2, 3, and 4. The vein finder of the present invention has a main body 2, the main body 2 is a three-dimensional rectangular structure, and the light emitting diode 5 is convex. The light-emitting diode 5 is provided on the surface of the main body 1. The light-emitting diode 5 is an integrally formed light-emitting diode. The light-emitting diode 5 can be formed from a transparent epoxy resin (EP OX Y) body. The light-emitting diode 5 can be E-POWER, Luxeon Power Light Sources. Any one of the traditional barrel LEDs, but is not limited to this. The light emitting diode 5 has a surface length of 3 to 30 mm and a diameter of 3 to 15 mm protruding from the main body 2. The side of the light emitting diode 5 includes a reflective layer 51. The reflective layer 51 may be a coating, but is not limited to this, so as to reduce the intensity of light emitted from the side of the light emitting diode 5, and use the reflective layer on the side of the light emitting diode 5 to collect light from the side of the light emitting diode 5 from the front end to enhance Luminous intensity, the reflective layer 51 may be composed of any coating of silver, copper, aluminum, phase, silicon, alumina, and The reflective layer 5 1 may be composed of a material having a refractive index different from that of the light-emitting diode 5, and refracts light in a different refractive index manner. The structure of the main body 2 may be arbitrarily changed, for example: three-dimensional rectangle, ellipse, or square, but Not limited to this.

The vein seeker further includes at least one proximity device. The proximity means is close to the tissue 4 to enhance the light intensity of the light-emitting diode 5 irradiating the tissue 4. The proximity device is divided into a mechanical switch and a proximity sensor. (proximity sensor), which is described as follows:

Mechanical switch: The mechanical switch controls the current flow by means of on and off. The mechanical switch is divided into a push button switch, a rocker switch, a rocker switch, a slide switch, a spring-loaded button switch and a limit switch.

Proximity sensors: Proximity sensors are divided into contact type and non-contact type. Proximity sensors are divided into many types, namely: capacitive switches, eddy current switches, photoelectric switches and ultrasonic switches. Proximity sensors include Signal amplification circuits, such as Darlington Transistor, but not limited to this. Photoelectric switches use light emitting and receiving diodes to sense an object, such as a photointerrupter, but are not limited to this.

In this embodiment, the proximity device is a proximity sensor 6 (proximity sensor), which is connected to the light emitting diode 5. The proximity sensor 6 may be a photoelectric switch, such as a photo interrupter, but is not limited thereto.

A circuit board 25 is provided at an appropriate position on the main body 2. In this embodiment, the circuit board 25 is disposed in the housing of the main body 2. A power switch 21 is provided at the end of the main body 2 to control the light-emitting diode 5 to be turned on and off. A low-voltage display device 22 is provided at the other end of the main body 2 to generate a beep sound when the voltage is insufficient to remind medical personnel to replace the battery with a new one. The main body 2 is provided with a brightness adjusting device 23 to adjust the brightness of the light emitting diode 5. One side of the main body 2 is provided with the above-mentioned light emitting diode 5, and the other side is provided with a plurality of hooking grooves 2 4. 24 can provide a flexible band 3 embedded in the vein seeker and the patient's tissue 4 to surround the hook; and a heat sink 8 is arranged below the circuit board 25, which can produce the light emitting diode 5 The heat is quickly dissipated and removed to increase the use effect and life of the light emitting diode 5. The heat sink 8 may be implemented in any of the US Pat. Nos. 6,428,189, 6,045,240, or 5,857,767, but is not limited thereto.

The proximity sensor 6 is connected to the light-emitting diode 5, and the proximity sensor 6 is close to the tissue 4 to enhance the light intensity of the light-emitting diode 5 illuminating the tissue 4. Internal to enhance the luminous intensity; the optimal light wavelength of the light-emitting diode 5 is 550 ~ 650nm, the above light wavelength has good permeability to the tissue, and the blood vessel has excellent absorption of the above light wavelength, so the light wavelength is 550 ~ The 650nm light-emitting diode 5 illuminates the tissue 4. Because only the blood vessels have a high absorption of the above-mentioned light wavelengths, and further uses the difference in spectral absorption between tissues and blood vessels to generate a color contrast, the above-mentioned light wavelength is the most suitable for finding blood vessels in tissues. Best wavelength.

As shown in FIG. 4, it shows the use of transillumination to find blood vessels. During operation, the vein finder main body 2 is lightly placed against the patient's tissue 4. The medical staff uses the band 3 and uses several channels provided on the back of the main body 2. A groove 2 4 is set to surround the patient's tissue 4. When the power switch 2 1 is turned on, the light-emitting diode 5 will not emit light or emit a little light (as a power indicator). You need to wait until the proximity sensing The device 6 is close to the tissue 4. The signal of the tissue 4 is sensed by the proximity sensor 6 to enhance the light emitting intensity of the light-emitting diode 5. When the patient inadvertently removes the tissue 4, the proximity sensor 6 does not sense the tissue 4 Signal, so the light of the light-emitting diode 5 will be automatically extinguished or the light intensity will be reduced, which can prevent the eyes of the medical staff 4 2 from being suddenly dazzled by the light-emitting diode 5. When using the transillumination method to find the position of the blood vessel 41 in the tissue 4, the light-emitting diode is used. The protruding structure of 5 is deeply pressed into the tissue 4, which can increase the degree of transillumination of the light 4 and the determination of the position of the blood vessel 41 in the tissue 4. According to the experimental results, the light-emitting diode 5 protrudes the best from the main body 2. Protruding length is 3 ~ 30 mm, and its diameter is 3 ~ 15 mm, among which, another preferred protruding length is 7 to 28 mm, and another preferred light emitting diode 5 has a diameter of 6 to 14 mm, which can make the light emitting diode 5 press into the tissue 4 with a better effect; the light emitting diode 5 When the protruding length protruding from the main body 2 is less than 3 mm, the deeper part of the tissue cannot be pressed, which makes it difficult for light to penetrate the tissue. When the protruding length of the light emitting diode 5 protruding from the main body 2 is greater than 30 mm, When the length is too long, it will increase the inconvenience of use. When the diameter of the LED 5 is less than 3, because the diameter of the LED 5 is too small, the patient will feel tingling and discomfort when pressed into the tissue. Because the diameter of the light-emitting diode 5 is too large, the light-emitting intensity (Iv) of the light-emitting diode 5 is greatly reduced, which makes it difficult for light to penetrate the tissue.

Please refer to FIG. 5 again to find the blood vessels by using the backscattering method. During operation and use, the main body 2 is lightly placed on the tissue 4 of the patient, and the signal of the tissue 4 is sensed by the proximity sensor 6 to enhance the light-emitting diode. 5 luminous intensity, when the patient inadvertently removes the tissue 4, because the proximity sensor 6 does not detect the signal of the tissue 4, the light of the light-emitting diode 5 will be automatically extinguished or the light intensity will be reduced, which can avoid the eyes of the medical staff 4 2 Suddenly dazzled by light-emitting diode 5; When the position of blood vessel 41 in the tissue is found by using the back reflection method, the protruding structure of light-emitting diode 5 is deeply pressed into tissue 4, and light 44 can be reflected deeper in tissue 4 to enhance the blood vessels in tissue 4. Judging the 4 1 position; When using the back reflection method to find the blood vessel 4 1 position in the tissue, the reflective layer 5 1 on the side of the light emitting diode 5 can reduce the intensity of the light emitted from the side of the light emitting diode 5 and reduce the intensity of the reflected light on the surface of the tissue 4 to emit light. The reflective layer 5 1 on the side of the diode 5 collects the light on the side of the light-emitting diode 5 and emits it from the front end to enhance the light emission intensity. , Lifting vessels 41 location determination.

Furthermore, please refer to FIG. 6, which is another embodiment of the present invention, wherein the proximity device may use a mechanical switch, and specifically, a limit switch 7 (but not limited to this) may be provided at an appropriate place of the main body 2, By using the provided limit switch 7, when the limit switch 7 is pressed against the tissue 4, the limit switch 7 can be turned on, thereby triggering the light emitting diode 5 to emit light, which can prevent medical personnel from receiving the light emitting diode 5. Suddenly glare.

Please refer to FIGS. 7, 8, 9 and 10, which is another embodiment of the present invention. A light-emitting diode 5 2 including an optical element is protruded on the surface of the main body 2. The protruding structure is pressed into the tissue to improve the accuracy of the determination of the position of the blood vessel. The side of the light emitting diode 52 including the optical element is reflected by a reflective layer to reduce the light emitted from the side of the light emitting diode 52 including the optical element and reduce the reflection on the surface of the tissue. Light intensity, the reflective layer gathers the light on the side of the light emitting diode to enhance the light intensity. The optimal protruding length of the light emitting diode 5 2 including the optical element from the main body 2 is 3 to 3 Omm, and the diameter is 3 to 15 mm. Among them, another preferable protruding length is 7 to 28 mm, and another preferable light emitting diode 5 has a diameter of 6 to 14 mm, so that the effect of pressing the light emitting diode 5 2 including the optical component into the tissue 4 is the best.

Please refer to FIG. 11, for an E-POWER light-emitting diode (see US Pat. No. 6,429,464) produced by a para light company, a bowl is formed on the bracket C2 and a chip Cl is placed on the bracket. The bracket C2 is thickened to deepen the bowl of the chip C1 to a depth of more than 0.6 tnm, so that the leads extend from both sides of the outside, and a bracket heat sink is provided at the bottom of the bracket C2, and a lens C3 is arranged above the bracket C2. The lens C3 is preferably formed from a transparent epoxy resin (EP OX Y) body; the light emitted by the chip C1 will be emitted through the side of the lens C3, resulting in a reduction in the light emitting intensity (Iv) of the light emitting diode, resulting in the inability to emit light. Transillumination organization.

Please refer to FIG. 12, a reflection layer C4 is provided on the side of the lens C3. The reflection layer C4 can collect the light from the chip C1 from the front end to enhance the luminous intensity and increase the degree of light transmission through the tissue. The reflection layer C4 can be Any of silver, copper, aluminum, molybdenum, silicon, and alumina coatings can be used. The reflective layer C4 can also be composed of a material with a refractive index different from that of the lens C 3 to refract light in different ways.

To sum up, the present invention is very light and neat in operation and implementation, which can effectively improve operation efficiency, reduce patient suffering, and is safe and reliable in use.

Claims

Claim

1. A method for finding blood vessels, which includes at least the following steps:

(b) the proximity device senses a tissue signal;

(d) The solid-state light source emits light to irradiate the tissue.

2. The method for searching for a blood vessel according to claim 1, wherein the step (a) further comprises the following steps: a step of compressing the proximity device with the tissue.

3. The method for finding blood vessels according to claim 1, wherein the step (a) further comprises the following steps: a step of pressing the solid-state light source into the tissue.

4. The method for searching for blood vessels according to claim 1, wherein: the solid-state light source in the step) is a light-emitting diode or a light-emitting diode including an optical component.

5. A vein finder, characterized in that the vein finder includes:

A subject

At least one solid-state light source with a wavelength of 550 to 650 nm is convexly disposed on the surface of the main body. The length of the solid-state light source protruding from the surface of the main body is 3 to 30 mm, and the diameter is 3 to 15 mm.

6. The vein finder of claim 5, wherein the side surface of the solid-state light source further comprises a reflective layer.

7. The vein finder according to claim 5, further comprising at least one proximity device provided in the main body, and the proximity device is connected to the solid-state light source.

8. The vein finder according to any one of claims 5 to 7, wherein the solid-state light source is composed of any one of a light-emitting diode integrally formed or a light-emitting diode including an optical element.

9. A vein finder, characterized in that the vein finder includes:

A subject

At least one solid-state light source disposed on the main body;

At least one proximity device is disposed on the main body, and the proximity device is connected to the solid-state light source.

10. The vein finder according to claim 9, wherein the solid state light source is composed of a light-emitting diode formed integrally or a light-emitting diode including an optical element.

11. The vein finder according to claim 9, wherein the proximity device is a proximity sensor or a mechanical switch.

12. The vein finder according to claim 11, wherein the proximity sensor is composed of a photoelectric switch.

13. The vein finder according to claim 12, wherein the photoelectric switch comprises a photoelectric circuit breaker.

14. The vein finder according to claim 11, wherein the mechanical switch comprises a limit switch.

15. A light-emitting diode for searching for a blood vessel, which includes a chip, a holder for holding the chip, and a lead wire. A bowl is formed on the holder and the chip is placed on the holder. The holder is thickened to deepen the bowl of the chip to a depth of 0. 6 See above, the bottom of the bracket is provided with a bracket heat sink, and a lens is arranged above the bracket, which is characterized in that: a reflective layer is provided on the side of the lens.