Patent Application
20220211309
The present invention relates to a disposable lancing device and a method of operating the same.
In current general medical examination process, injection or invasive blood sampling devices are often used. For example, in order to effectively control the blood glucose concentration of diabetic patients, medical staff must use the blood sampling device to prick the patient's skin to collect blood samples every day. Drop the collected blood sample on the test piece, insert the test piece into the blood glucose meter, and read the blood glucose concentration of the blood sample.
At present, there are quick and easy-to-operate testing instruments on the market. Only a small amount of blood from the subject can be detected. Therefore, the subject only needs to puncture the skin and squeeze out a small amount of blood, which will be sufficient for the detection of the testing instrument. Therefore, there are also blood collection devices on the market designed to meet this demand. One type of blood collection device mainly has a pen-shaped grip and uses a pressing method to make the blood sampling needle puncture the skin of the person being collected. After the needle is used, replace the needle. However, this method may be caused by the negligence of the blood sampling staff forgetting to replace the blood sampling needle. The blood sampler suffers from infection, and the risk of the blood sampler being punctured by the lancet when replacing the lancet is also increased.
With reference to
However, the spring A30 forces the needle holder A20 to trigger the collection needle A22 into a skin of a user suddenly, thus causing stabbing pain. Furthermore, the two free segments of the two flexible wings A21 of the needle holder A20 friction the casing A10 to cause inaccurate trigger of the collection needle A22 and damage to the casing A10.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary objective of the present invention is to provide a disposable lancing device that is capable of overcoming the shortcomings of the conventional disposable lancing device.
To obtain above-mentioned aspect, a disposable lancing device provided by the present invention contains: a first casing, a second casing, and a needle holder.
The first casing includes a close segment formed on a first end of the first casing, an open segment formed on a second end of the first casing, a slideway formed in the first casing, two tilted contact faces formed on two side wall of the slideway, two first shoulders formed on the slideway, a fixing portion formed on the slideway and corresponding to the close segment, two recesses defined on two side walls of the first casing, and two push fringes formed around the two recesses.
The second casing includes an accommodation chamber defined in the second casing, and the second casing is slidably received on the slideway of the first casing, the second casing includes two limitation extensions corresponding to the first casing and engaged with the two first shoulders of the casing, multiple drive protrusions proximate to the two limitation extensions and having multiple urge segments formed on multiple predetermined positions of the multiple drive protrusions. A forcing face is defined on an end of the second casing opposite to the two limitation extensions, and a through hole is defined on a center of the forcing face. The through hole has a protruded rib extending outward therearound opposite to the forcing face.
The needle holder is defined between the first casing and the second casing, and the needle holder includes a collection needle accommodated in the needle holder. The collection needle includes a syringe needle fixed on an end thereof and corresponding to the through hole of the second casing, the needle holder further includes a trigger spring corresponding to the fixing portion of the first casing, and the needle holder further includes a return spring corresponding to the through hole of the second casing. The needle holder includes two symmetrical flexible wings corresponding to the two tilted contact faces of the first casing, and the two symmetrical flexible wings include two driving segments formed on two distal ends thereof. The two driving segments abut against the two symmetrical flexible wings of the needle holder to flexibly retract inward by using the two tilted contact faces of the first casing.
Thereby, the needle holder includes the trigger spring and the return spring so that when the trigger spring pushes the needle holder toward the through hole of the second casing, the return spring buffers the pushing force of the trigger spring to the syringe needle so as to reduce the stabbing pain. Preferably, when the forcing face presses the collection portion by mating with the protruded rib, the subcutaneous fat of the collection portion is pressed in the thickness so as to reduce the stabbing pain when piercing the collection needle into the skin of the user. In addition, the trigger spring and the return spring pull the needle holder and the syringe needle back quickly to finish the blood collection.
With reference to
a first casing 10 including a close segment 11 formed on a first end of the first casing 10, an open segment 12 formed on a second end of the first casing 10, a slideway 13 formed in the first casing 10, two tilted contact faces 161 formed on two side wall of the slideway 13, two abutting ribs 16 extending from two low ends of the two tilted contact faces 161, and two slide tracks 162 formed on two high ends of the two tilted contact faces 161; two first shoulders 15 formed on the slideway 13 between the two tilted contact faces 161 and the two slide tracks 162, two guide faces 152 formed on the two first shoulders 15, and two first stop faces 151 formed on the two first shoulders 15 opposite to the two guide faces 152, a fixing portion 14 formed on the slideway 13 and corresponding to the close segment 11, two recesses 17 defined on two side walls of the first casing 10, and two push fringes 171 formed around the two recesses 17, as shown in
a second casing 20 including an accommodation chamber 24 defined in the second casing 20, and the second casing 20 being slidably received on the slideway 13 of the first casing 10, the second casing 20 further including two limitation extensions 27 corresponding to the first casing 10 and engaged with the two first shoulders 15 of the casing 10, wherein the two limitation extensions 27 have two first inclined guide faces 271 formed thereon and corresponding to the two guide faces 152 of the two first shoulders 15, and the two limitation extensions 27 have two second stop faces 272 formed thereon opposite to the two first inclined guide faces 271, such that the two first inclined guide faces 271 of the two limitation extensions 27 abut against the two guide faces 152 of the two first shoulders 15, and the two second stop faces 272 of the two limitation extensions 27 move to the two first stop faces 151 of the two first shoulders 15 so that the first casing 10 limits with and slides relative to the second casing 20; the second casing 20 further including multiple drive protrusions 25 proximate to the two limitation extensions 27 and having multiple urge segments 251 formed on multiple predetermined positions of the multiple drive protrusions 25, and the second casing 20 including multiple shrinkage trenches 26, wherein a respective one shrinkage trench 26 is defined between any two adjacent drive protrusions 25, a forcing face 21 is defined on an end of the second casing 20 opposite to the two limitation extensions 27, and a through hole 22 is defined on a center of the forcing face 21, wherein the through hole 22 has a protruded rib 222 extending outward therearound opposite to the forcing face 21, such that when the forcing face 21 presses a collection portion P by mating with the protruded rib 222, a subcutaneous fat of the collection portion P is pressed in a thickness so as to reduce a stabbing pain when piercing the disposable lancing device into a skin of the user;
a needle holder 30 defined between the first casing 10 and the second casing 20, and the needle holder 30 including a receiving orifice 31 and configured to accommodate a collection needle 40, wherein the collection needle 40 includes a syringe needle 41 fixed on an end thereof and corresponding to the through hole 22 of the second casing 20, the needle holder 30 further includes a trigger spring 50 corresponding to the fixing portion 14 of the first casing 10, and the fixing portion 14 has a connecting orifice 141 defined therein, the needle holder 30 further includes a return spring 60 corresponding to the through hole 22 of the second casing 20; wherein the needle holder 30 further includes a connection projection 35 formed on an end thereof and corresponding to the trigger spring 50, a first fitting portion 36 extending from an end of the connection projection 35, a triggering segment 52 formed on an end of the trigger spring 50 and corresponding to the first fitting portion 36, such that the triggering segment 52 is fixed on the first fitting segment 36, and the trigger spring 50 includes a positioning segment 51 formed on an end thereof and corresponding to the fixing portion 14 of the first casing 10, such that the positioning segment 51 is mounted on the fixing portion 14 of the first casing 10; the needle holder 30 further includes a second fitting portion 32 formed on an end thereof corresponding to the return spring 60, and the return spring 60 includes a returning segment 61 extending from a first end thereof and corresponding to the second fitting portion 32, such that the returning segment 61 is fixed on the second fitting portion 32, and the return spring 60 includes a locating segment 62 extending from a second end thereof and corresponding to the accommodation chamber 24 of the second casing 20, the accommodation chamber 24 of the second casing 20 has a disposing face 23 corresponding to the locating segment 62 so that the locating segment 62 is fixed on the disposing 23 of the second casing 20; and the needle holder 30 further includes two symmetrical flexible wings 33 corresponding to the two tilted contact faces 161 of the first casing 10, wherein the two symmetrical flexible wings 33 include two driving segments 34 formed on two distal ends thereof, the two driving segments 34 have two second inclined guide faces 341 formed on two first ends thereof, and the two driving segments 34 have two pushed faces 342 formed on two second ends thereof opposite to the two second inclined guide faces 341, wherein the second casing 20 includes the multiple shrinkage trenches 26, and the respective one second shrinkage trench 26 is defined between any two adjacent drive protrusions 25, such that when the second casing 20 is moved, the multiple second shrinkage trenches 26 shrink the two tilted contact faces 161 and the two slide tracks 162 of the first casing 10 so that when the multiple urge segments 251 of the second casing 20 push the two pushed faces 342 of the needle holder 30, the two second inclined guide faces 341 are pushed horizontally by the two tilted contact faces 161 of the first casing 10, the two symmetrical flexible wings 33 of the needle holder 30 are pushed to flexibly retract inward, and the two tilted contact faces 161 and the two slide tracks 162 of the first casing 10 move into the multiple shrinkage trenches 26 of the second casing 20, wherein the two driving segments 34 abut against the two symmetrical flexible wings 33 of the needle holder 30 to flexibly retract inward by using the two tilted contact faces 161 of the first casing 10.
The disposable lancing device further comprises a safety sleeve 70 configured to receive the syringe needle 41 of the collecting needle 40 of the needle holder 30, wherein the safety sleeve 70 includes a connecting segment 73 formed on a first end thereof, a slot 74 defined in the connecting segment 73 and configured to receive the syringe needle 41, and a grip portion 75 formed on a second end of the safety sleeve 70 and extending out of the through hole 22; wherein a stopping portion 71 is defined between the connecting segment 73 and the grip portion 75, a second shoulder 72 is defined between the connecting segment 73 and the grip portion 75 of the safety sleeve 70, and the second shoulder 71 has two extending tabs 72 extending from two sides of the second shoulder 71, wherein the two extending tabs 72 have a limiting rib 76 facing the grip portion 75, and the second casing 20 further includes an elongated groove 221 defined in the through hole 22 of the second casing 20 and corresponding to the limiting rib 76 and the two extending tabs 72 so that the limiting rib 76 and the two extending tabs 72 rotate an angle (such as 90 degrees) by using the grip portion 75, and the safety sleeve 70 is engaged in the through hole 22 of the second casing 20. Alternatively, the grip portion 75 rotates an angle so that the limiting rib 76 and the two extending tabs 72 are aligned with the elongated groove 221 of the through hole 22, and the safety sleeve 70 moves into and out of the through hole 22, wherein the two extending tabs 72 are configured to avoid a removal of the safety sleeve 70 from the collecting needle 40 and extending the syringe needle 41. Furthermore, the limiting rib 76 is configured to avoid a careless trigger of the safety sleeve 70 toward the collecting needle 40, thus obtaining using safety by using the limiting rib 76 and the two extending tabs 72 relative to the through hole 22 of the second casing 20.
Referring to
As illustrated in
Referring further to
With reference to
With reference to
1) providing a first casing 10 which includes a close segment 11 formed on a first end of the first casing 10, an open segment 12 formed on a second end of the first casing 10, a slideway 13 formed in the first casing 10, two tilted contact faces 161 formed on two surfaces of the slideway 13, two first shoulders 15 formed on the slideway 13 between the two tilted contact faces 161 and two slide tracks 162, a fixing portion 14 formed on the slideway 13 and corresponding to the close segment 11, two abutting ribs 16 extending from two low ends of the two tilted contact faces 161, and the two slide tracks 162 formed on two high ends of the two tilted contact faces 161;
2) providing a second casing 20 which includes an accommodation chamber 24 defined in the second casing 20, wherein the second casing 20 is slidably received on the slideway 13 of the first casing 10, the second casing 20 further includes two limitation extensions 27 corresponding to the first casing 10 and engaged with the two first shoulders 15 of the casing 10, multiple drive protrusions 25 proximate to the two limitation extensions 27 and having multiple urge segments 251 formed on multiple predetermined positions of the multiple drive protrusions 25, a forcing face 21 defined on an end of the second casing 20 opposite to the two limitation extensions 27, and a through hole 22 defined on a center of the forcing face 21; wherein the second casing 20 further includes multiple shrinkage trenches 26, and a respective one shrinkage trench 26 is defined between any two adjacent drive protrusions 25, such that when the second casing 20 is moved, the multiple second shrinkage trenches 26 shrink the two tilted contact faces 161 and the two slide tracks 162 of the first casing 10;
3) providing a needle holder 30, wherein the needle holder 30 is defined between the first casing 10 and the second casing 20, and the needle holder 30 including a collection needle 40 accommodated therein, wherein the collection needle 40 corresponds to the through hole 22 of the second casing 20, the needle holder 30 further includes a trigger spring 50 corresponding to the fixing portion 14 of the first casing 10, and a return spring 60 corresponding to the through hole 22 of the second casing 20; wherein the needle holder 30 further includes two symmetrical flexible wings 33 corresponding to the two tilted contact faces 161 of the first casing 10, and the two symmetrical flexible wings 33 include two driving segments 34 formed on two distal ends thereof, wherein the two driving segments 34 force the two symmetrical flexible wings 33 to flexibly retracted inward by using the two tilted contact faces 161 of the first casing 10;
4) abutting the forcing face 21 of the second casing 20 against the collection portion P, and the first casing 10 is pushed toward the collection portion P, wherein the multiple urge segments 251 of the second casing 20 push the two pushed faces 342 of the needle holder 30, the two second inclined guide faces 341 of the needle holder 30 contact with the two tilted contact faces 161 of the first casing 10, and the trigger spring 50 is about to trigger;
5) pushing the two symmetrical flexible wings 33 to flexibly retracted inward by using the two tilted contact faces 161 of the first casing 10 to push the two second inclined guide faces 341 horizontally, wherein the two tilted contact faces 161 and the two slide tracks 162 of the first casing 10 move into the multiple shrinkage trenches 26 of the second casing 20, and the two driving segments 34 abut against the two symmetrical flexible wings 33 of the needle holder 30 to flexibly retract inward so that the two symmetrical flexible wings 33 flexibly retract inward by using the two tilted contact faces 161 of the first casing 10, in the meantime, the trigger spring 50 is released to push the needle holder 30 toward the through hole 22 of the second casing 20, and the syringe needle 41 extends out of the through hole 22 of the second casing 20 and pierces into the collection portion P, wherein the return spring 60 buffers the pushing force of the trigger spring 50 to the syringe needle 41 so as to reduce the stabbing pain.
Thereby, the needle holder 30 includes the trigger spring 50 and the return spring 50 so that when the trigger spring 50 pushes the needle holder 30 toward the through hole 22 of the second casing 20, the return spring 50 buffers the pushing force of the trigger spring 50 to the syringe needle 41 so as to reduce the stabbing pain. Preferably, when the forcing face 21 presses the collection portion P by mating with the protruded rib 222, the subcutaneous fat of the collection portion P is pressed in the thickness so as to reduce the stabbing pain when piercing the collection needle 40 into the skin of the user. In addition, the trigger spring 50 and the return spring 60 pull the needle holder 30 and the syringe needle 41 back quickly to finish the blood collection.
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention and other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 110100151 | Jan 2021 | TW | national |
