CN109938746B - High-safety puncture needle - Google Patents
High-safety puncture needle Download PDFInfo
- Publication number
- CN109938746B CN109938746B CN201910249164.0A CN201910249164A CN109938746B CN 109938746 B CN109938746 B CN 109938746B CN 201910249164 A CN201910249164 A CN 201910249164A CN 109938746 B CN109938746 B CN 109938746B
- Authority
- CN
- China
- Prior art keywords
- box body
- hose
- puncture needle
- clamping block
- reset spring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010241 blood sampling Methods 0.000 claims abstract description 13
- 239000008280 blood Substances 0.000 claims description 18
- 210000004369 blood Anatomy 0.000 claims description 18
- 238000004804 winding Methods 0.000 claims description 18
- 208000035473 Communicable disease Diseases 0.000 abstract description 4
- 210000003462 vein Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010417 needlework Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Images
Abstract
The invention discloses a high-safety puncture needle, which comprises a T-shaped box body, wherein a four-bar mechanism is arranged in the box body, the four-bar mechanism comprises two support shafts fixedly connected with the bottom of the box body, the support shafts are respectively hinged with support plates, a clamping block is fixed between the two support plates, the outer wall of the clamping block is clamped with the puncture needle, one side wall of the puncture needle, which is close to the box body, is provided with a rectangular open slot, the other side wall of the box body, which is opposite to the open slot, is provided with a drive hole, an ejector rod is assembled in the drive hole, the tail part of the puncture needle is connected with one end of a hose, the other end of the hose is connected with a blood sampling tube interface, a positioning rod is arranged between the two support shafts, the support shafts are parallel to the positioning rod, the positioning rod is connected with one end of a reset spring A, and the other end of the reset spring A is connected with the clamping block; the invention effectively solves the problems that nurses are pricked and have high labor intensity during blood sampling, reduces the probability of infecting various infectious diseases caused by the prick, and effectively ensures the personal safety of the nurses; the invention has simple and compact structure, safety and practicability and easy popularization.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a high-safety puncture needle.
Background
When the hospital carries out the vein blood sampling, need the nurse to carry out the vein puncture manually, this process needs to use vein puncture needle and vacuum test tube. In order to achieve the purpose of puncturing the skin to draw blood, puncture needles are relatively sharp, and nurses have the risk of being punctured when drawing blood. In addition, the blood sampling process is comparatively loaded down with trivial details, and for the guarantee patient rights and interests, the nurse highly concentrates attention, carries out high intensity of labour, and this can increase the probability that the nurse is stabbed and infects various infectious diseases.
Disclosure of Invention
The invention aims to provide a high-safety puncture needle, and solves the problem that a nurse is easily pricked by the conventional vein puncture needle.
The technical scheme includes that the high-safety puncture needle comprises a T-shaped box body, a four-bar mechanism is arranged in the box body and comprises two support shafts fixedly connected to the bottom of the box body, the support shafts are respectively hinged to support plates, a clamping block is fixed between the two support plates, the outer wall of the clamping block is clamped with the puncture needle, a rectangular open slot is formed in one side wall, close to the box body, of the puncture needle, a driving hole is formed in the other side wall, opposite to the open slot, of the box body, an ejector rod is assembled in the driving hole, the tail portion of the puncture needle is connected with one end of a hose, the other end of the hose is connected with a blood sampling tube connector, a positioning rod is arranged between the two support shafts and is parallel to the positioning rod, the positioning rod is connected with one end of a reset spring A, the other end of the reset spring A is connected with the clamping block, a box cover is correspondingly arranged at the top of the box body, fixing holes are correspondingly formed in the peripheries of the box body and the box cover, and 2 balance blocks are arranged on the outer side of the box body.
The invention is also characterized in that: a plurality of winding piles are arranged on one side of the four-bar mechanism, a hose tensioner is arranged on one side of each winding pile, and the hose is S-shaped winding piles and the hose tensioner.
Hose tensioning ware includes that one end is at box body inner wall fixed reset spring B, and the mounting panel is connected to reset spring B's the other end, and the fixed stay bar is all blocked to the mounting panel both sides, and the slide bar is cup jointed to the mounting panel, and the slide bar is perpendicular with the bracing piece axial, and the slide bar can be followed to the mounting panel, and bracing piece, mounting panel and slide bar all are not fixed with the box body.
The inner wall of the box body is provided with an opening, the blood sampling tube interface is arranged on the outer side of the box body through the opening, needle tail clamping blocks are arranged on the periphery of the opening, a through hole is formed in the center of each needle tail clamping block, and the tail of the hose is connected with the blood sampling tube interface.
The invention has the beneficial effects that the puncture needle with high safety is fixed on the four-bar mechanism through the clamping block, the hose is wound on the winding pile, the tail part of the hose is fixed by the needle tail clamping block, and the interface of the blood collection tube is connected with the blood collection tube. When blood is collected, the puncture needle is released by pressing the driving hole. After blood collection is finished, the driving hole is pressed again, and the puncture needle returns. Effectively solved the nurse when taking blood and pricked the problem of hindering and nurse's high intensity of labour, reduced because of pricking the probability that leads to infecting various infectious diseases, effectively ensured nurse's personal safety. In addition, the invention has simple and compact structure, safety and practicability and easy popularization.
Drawings
Figure 1 is a schematic view of the structure of a high safety lancet of the present invention,
fig. 2 is a schematic view showing the construction of a high safety puncture needle hose tensioner of the present invention.
In the drawing, 1, a box cover, 2, a fixing hole, 3, a box body, 4, a balance block, 5, a needle tail clamping block, 6, a hose tensioner, 6-1, a support rod, 6-2, a mounting plate, 6-3, a slide rod, 7, a four-bar mechanism, 8, a driving hole, 9, a winding pile, 10, a hose, 11, a clamping block, 12, a reset spring A, 13, a puncture needle, 14, a reset spring B, 15 and a blood collection tube interface are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses a high-safety puncture needle, which is structurally shown in figure 1 and comprises a T-shaped box body 3, wherein a four-bar mechanism 7 is arranged in the box body 3, the four-bar mechanism 7 comprises two support shafts fixedly connected with the bottom of the box body 3, the support shafts are respectively hinged with support plates, a clamping block 11 is hinged between the two support plates, the outer wall of the clamping block 11 is clamped with a puncture needle 13, a rectangular open slot is formed in one side wall of the puncture needle 13 close to the box body 3, a driving hole 8 is formed in the other side wall of the box body 3 corresponding to the open slot, an ejector rod is assembled in the driving hole 8, the tail part of the puncture needle 13 is connected with one end of a hose 10, and the other end of the hose 10 is connected with a blood collection tube interface 15.
A positioning rod is arranged between the two supporting shafts, the supporting shafts are parallel to the positioning rods, the positioning rods are connected with one end of a reset spring A12, the other end of the reset spring A12 is connected with a clamping block 11, and the clamping block 11 is always attached to the inner wall of the box body 3 under the action of the reset spring A12.
The top of the box body 3 is correspondingly provided with a box cover 1, the periphery of the box body 3 and the box cover 1 are correspondingly provided with fixing holes 2, and the outer side of the box body 3 is provided with 2 balance blocks 4.
One side of the four-bar mechanism 7 is provided with a plurality of winding piles 9, one side of each winding pile 9 is provided with a hose tensioner 6, and a hose 10 is wound around each winding pile 9 and the hose tensioner 6 in an S shape.
As shown in figure 2, the hose tensioner 6 comprises a return spring B14 with one end fixed on the inner wall of the box body 3, the other end of the return spring B14 is connected with a mounting plate 6-2, the two sides of the mounting plate 6-2 are clamped with fixed support rods 6-1, the mounting plate 6-2 is sleeved with a slide rod 6-3, the slide rod 6-3 is axially vertical to the support rod 6-1, the mounting plate 6-2 can slide along the slide rod 6-3, the support rod 6-1, the mounting plate 6-2 and the slide rod 6-3 are not fixed with the box body 3, the support rod 6-1 fixed on the two sides of the mounting plate 6-2 is driven to be close to the inner wall of the box body 3 through the tension spring action of a return spring B14, the hose 10 is wound on the support rod 6-1, the support rod 6-1 is far away from a winding pile 9 and can stretch the hose 10, the contact position of the hose 10 and the support rod 6-1 is changed from hollow to flat, hindering the passage of liquids; when the puncture needle 13 releases the box body 3, the hose 10 drives the support rod 6-1 to slide towards the winding pile 9, the distance between the support rod 6-1 and the winding pile 9 is shortened, the contact between the hose 10 and the support rod 6-1 is reduced, and the hose 10 is restored to a hollow open state from a flat state.
The inner wall of the box body 3 is provided with a hole, the blood sampling tube interface 15 is arranged on the outer side of the box body 3 through the hole, the periphery of the hole is provided with needle tail clamping blocks 5, the center of each needle tail clamping block 5 is provided with a through hole, and the tail part of the fixed hose 10 is connected with the blood sampling tube interface 15.
The invention relates to a working principle of a high-safety puncture needle, which comprises the following steps: the structure that the reset spring A12 is connected with the clamping block 11 on the four-bar mechanism 7 is adopted, when the mandril in the driving hole 8 is pressed by external force, the four-bar mechanism 7 is triggered, the supporting plate on the four-bar mechanism 7 rotates along the supporting shaft to drive the clamping block 11 to rotate, the reset spring A12 is stretched, and the puncture needle 13 on the clamping block 11 releases the box body 3; when the mandril in the driving hole 8 is removed, the reset spring A12 retracts under the action of elasticity, the clamping block 11 is pulled, the supporting plate on the four-bar mechanism 7 is triggered to rotate along the supporting shaft, the clamping block 11 retracts into the box body 3, and the reset operation of the puncture needle 13 on the clamping block 11 is completed.
When the high-safety puncture needle works, a puncture needle 13 is fixedly clamped on a four-bar mechanism 7 through a clamping block 11, a hose 10 is tightly wound on a winding pile 9 and a support rod 6-1 on a hose tensioner 6, the tail of the hose 10 is fixed by a needle tail clamping block 5, and a blood collection tube interface 15 is connected with a blood collection tube; when blood is collected, the ejector rod on the driving hole 8 is pressed, the puncture needle 13 is released from the box body 3, and the reset spring A12 is stretched; the puncture needle 13 drives the hose 10 to move, the hose 10 drives the support rod 6-1 to slide towards the winding pile 9, the distance between the support rod 6-1 and the winding pile 9 is shortened, the hose 10 is reduced to be in contact with the support rod 6-1, the reset spring B14 is in a stretching state, the hose 10 is changed from a closing state to a communicating state, and blood enters the blood collection tube through the puncture needle 13, the hose 10 and the blood collection tube interface 15; after blood collection is finished, the ejector rod pressing the driving hole 8 is removed, the reset spring A12 resets, the puncture needle 13 returns to the interior of the box body 3 from the exterior of the box body 3, and the hose 10 is changed from a communication state to a closing state.
According to the high-safety puncture needle, the ejector rod enables the supporting plate on the four-bar mechanism 7 to rotate along the supporting shaft under the action of the driving hole 8, the clamping block 11 is driven to rotate, the movement of the driving hole 8 is converted into the movement of the clamping block 11, the puncture needle 13 can be regulated and controlled to return by the return spring A12, and therefore the puncture needle 13 is released and returned in the box body 3; the hose 10 drives the support rod 6-1 to slide towards the winding pile 9, and the reset spring B14 drives the support rods 6-1 fixed on the two sides of the mounting plate 6-2 to move close to the inner wall of the box body 3, so that the opening and closing of the hose 10 are regulated and controlled; the box cover 1 and the box body 3 are made of transparent plastic materials, the blood sampling box is simple and compact in structure, the problems that a nurse is pricked and the labor intensity of the nurse is high during blood sampling are effectively solved, the probability of infecting various infectious diseases due to the prick is reduced, the personal safety of the nurse is effectively guaranteed, and the blood sampling box is safe and practical.
Claims (2)
1. The high-safety puncture needle is characterized by comprising a T-shaped box body (3), a four-bar mechanism (7) is arranged inside the box body (3), the four-bar mechanism (7) comprises support shafts fixedly connected to the bottom of the box body (3), the support shafts are respectively hinged to support plates, a clamping block (11) is fixed between the two support plates, the outer wall of the clamping block (11) is clamped with a puncture needle (13), the puncture needle (13) is close to one side wall of the box body (3) and is provided with a rectangular open slot, the other side wall of the box body (3) opposite to the open slot is provided with a driving hole (8), an ejector rod is assembled inside the driving hole (8), the tail part of the puncture needle (13) is connected with one end of a hose (10), the other end of the hose (10) is connected with a blood sampling tube interface (15), a positioning rod is arranged between the two support shafts, the support shafts are parallel to the positioning rod, and the positioning rod is connected with one end of a reset spring A (12), the other end of the reset spring A (12) is connected with a clamping block (11), the top of the box body (3) is correspondingly provided with a box cover (1), the peripheries of the box body (3) and the box cover (1) are correspondingly provided with fixing holes (2), and the outer side of the box body (3) is provided with 2 balance blocks (4);
a plurality of winding piles (9) are arranged on one side of the four-bar mechanism (7), a hose tensioner (6) is arranged on one side of each winding pile (9), and the hose (10) is wound on the winding piles (9) and the hose tensioner (6) in an S shape;
hose tensioning ware (6) include that one end is at box body (3) inner wall fixed reset spring B (14), reset spring B (14) the other end connect mounting panel (6-2), mounting panel (6-2) both sides are equal joint fixed stay pole (6-1), slide bar (6-3) are cup jointed in mounting panel (6-2), slide bar (6-3) and bracing piece (6-1) axial vertical, and slide bar (6-3) can be followed in mounting panel (6-2) and are slided, bracing piece (6-1), mounting panel (6-2) and slide bar (6-3) all are not fixed with box body (3).
2. The high-safety puncture needle according to claim 1, wherein the inner wall of the box body (3) is provided with an opening, a blood collection tube interface (15) is arranged outside the box body (3) through the opening, a needle tail clamping block (5) is arranged around the opening, a through hole is arranged in the center of the needle tail clamping block (5), and the tail part of the hose (10) is connected with the blood collection tube interface (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910249164.0A CN109938746B (en) | 2019-03-29 | 2019-03-29 | High-safety puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910249164.0A CN109938746B (en) | 2019-03-29 | 2019-03-29 | High-safety puncture needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109938746A CN109938746A (en) | 2019-06-28 |
| CN109938746B true CN109938746B (en) | 2021-10-15 |
Family
ID=67013013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910249164.0A Expired - Fee Related CN109938746B (en) | 2019-03-29 | 2019-03-29 | High-safety puncture needle |
Country Status (1)
| Country | Link |
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| CN (1) | CN109938746B (en) |
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| CN109938746A (en) | 2019-06-28 |
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Granted publication date: 20211015 |