CN112690789A - Vacuum blood sampling knife - Google Patents
Vacuum blood sampling knife Download PDFInfo
- Publication number
- CN112690789A CN112690789A CN202011570841.8A CN202011570841A CN112690789A CN 112690789 A CN112690789 A CN 112690789A CN 202011570841 A CN202011570841 A CN 202011570841A CN 112690789 A CN112690789 A CN 112690789A
- Authority
- CN
- China
- Prior art keywords
- driving
- negative pressure
- box
- handle
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150053—Details for enhanced collection of blood or interstitial fluid at the sample site, e.g. by applying compression, heat, vibration, ultrasound, suction or vacuum to tissue; for reduction of pain or discomfort; Skin piercing elements, e.g. blades, needles, lancets or canulas, with adjustable piercing speed
- A61B5/150061—Means for enhancing collection
- A61B5/150068—Means for enhancing collection by tissue compression, e.g. with specially designed surface of device contacting the skin area to be pierced
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150053—Details for enhanced collection of blood or interstitial fluid at the sample site, e.g. by applying compression, heat, vibration, ultrasound, suction or vacuum to tissue; for reduction of pain or discomfort; Skin piercing elements, e.g. blades, needles, lancets or canulas, with adjustable piercing speed
- A61B5/150167—Adjustable piercing speed of skin piercing element, e.g. blade, needle, lancet or canula, for example with varying spring force or pneumatic drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150221—Valves
Abstract
The invention provides a vacuum blood sampling knife which comprises a blade, a knife handle, a liquid conveying pipe, a negative pressure box, a driving box and a driving device. The knife handle is fixed at the rear end of the blade; the infusion tube is arranged on the inner side of the blade and is provided with a one-way valve; the negative pressure box is positioned behind the knife handle, a rotating column is rotationally arranged in the negative pressure box, the infusion tube is fixed on the rotating column, and one end provided with a one-way valve is accommodated in the negative pressure box; the one-way valve opening is positioned in the negative pressure tank. The driving box is arranged close to the negative pressure box, a rotating block is arranged in the driving box, one end of the rotating block is connected with the rotating column, the other end of the rotating block is connected with a driving device, and the driving device comprises a driving rod, a driving disc and a driving handle; the rotating block is connected and installed on the driving rod, one end of the driving rod penetrates through the driving box to be connected with the driving disc, a driving handle is installed at the non-circle center position of one end of the driving disc, and the driving handle swings to drive the rotating block to rotate. The blood sampling knife is flexible to operate, and the safety of blood sampling is effectively improved.
Description
Technical Field
The invention belongs to the field of medical auxiliary equipment devices, and particularly relates to a vacuum blood sampling knife.
Background
The vacuum blood sampling technology is an advanced blood sampling technology at present and is popular in the medical field, the vacuum blood sampling device replaces a disposable injector for sampling blood, and has the advantages of simple operation, less pain of patients, high work efficiency, large blood sampling amount and the like.
Disclosure of Invention
Aiming at the problems existing in the prior technical scheme, the invention aims to provide a vacuum blood collecting knife.
In order to achieve the purpose, the invention provides the following technical scheme:
a vacuum lancing knife comprising:
the cutter comprises a blade and a cutter handle, wherein the cutter handle is fixed at the rear end of the blade;
the infusion tube is arranged on the inner side of the blade and is provided with a one-way valve;
the infusion tube is fixed on the rotating column, and one end provided with the check valve is accommodated in the negative pressure box; a baffle is vertically fixed in the negative pressure box in a sliding manner, and one side of the baffle is fixed on the inner wall of the negative pressure box through a telescopic spring;
the driving box is arranged close to the negative pressure box, a rotating block is arranged in the driving box, one end of the rotating block is connected with the rotating column, the other end of the rotating block is connected with a driving device, and the driving device comprises a driving rod, a driving disc and a driving handle; the rotating block is connected and installed on a driving rod, one end of the driving rod penetrates through a driving box and is connected with a driving disk, a driving handle is installed at the non-circle center position of one end of the driving disk, and the driving handle swings to drive the rotating block to rotate;
the rear end of the blade is provided with a second spring, the second spring is connected with the knife handle, and the upper end and the lower end of the knife handle are both provided with an extrusion device; the one-way valve opening is positioned in the negative pressure tank.
Furthermore, a limiting ball is arranged at one end of the driving handle.
Furthermore, a key groove is formed in the middle of the lower end of the rotating block, a connecting key is arranged inside the key groove, and the connecting key is fixed on the inner wall of the driving box.
Furthermore, the blade is made of Cr12 steel.
Further, the blade is 0.45mm thick; the width is 0.6 mm.
Furthermore, the extrusion device is made of rubber.
Compared with the prior art, the invention has the beneficial effects that: according to the vacuum blood sampling knife, the backflow of blood is effectively prevented by the design that the infusion tube is matched with the one-way valve; the operation is nimble, has effectively improved the security of blood sampling, simultaneously through designing the extrusion device at the edge of blade, when taking a blood sample, extrudees the wound position from top to bottom, does benefit to the blood sampling, and the power of device adopts the drive arrangement of rotary type, realizes cutting blood sampling effect.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the blade structure of the present invention.
The figure is marked with: 1-a blade; 2-an extrusion device; 3-a knife handle; 4-a transfusion tube; 5-rotating column, 6-one-way valve; 7-turning the block; 8-negative pressure box; 9-a telescopic spring; 10-a drive box; 11-a drive rod; 12-a drive disc; 13-a limit ball; 14-a drive handle; 15-key groove; 16-a connecting bond; 17-baffle, 101-spring two.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present embodiment provides a vacuum blood sampling knife, which comprises a blade 1, a knife handle 3, an infusion tube 4, a negative pressure box 8, a driving box 10 and a driving device.
The blade 1 is made of Cr12 steel and has a thickness of 0.45 mm; the width is 0.6mm, and the knife handle 3 is fixed at the rear end of the blade;
the infusion tube 4 is arranged at the inner side of the blade 1, and a one-way valve 6 is arranged on the infusion tube 4;
the negative pressure box 8 is positioned behind the knife handle 3, the negative pressure box 8 is rotatably provided with a rotating column 5, the infusion tube 4 is fixed on the rotating column 5, and one end provided with the one-way valve 6 is accommodated in the negative pressure box 8; a baffle 17 is vertically fixed in the negative pressure box 8 in a sliding manner, and one side of the baffle 17 is fixed on the inner wall of the negative pressure box 8 through a telescopic spring 9.
The driving box 10 is arranged close to the negative pressure box 8, a rotating block 7 is arranged in the driving box 10, one end of the rotating block 7 is connected with the rotating column 5, the other end of the rotating block 7 is connected with a driving device, and the driving device comprises a driving rod 11, a driving disk 12 and a driving handle 14; the rotating block 7 is connected and installed on a driving rod 11, one end of the driving rod 11 penetrates through a driving box 10 to be connected with a driving disk 12, a driving handle 14 is installed at a non-circle center position of one end of the driving disk 12, and the driving handle 14 swings to drive the rotating block 7 to rotate.
The rear end of the blade 1 is provided with a spring 101, the spring 101 is connected with the handle 3, and the upper end and the lower end of the handle 3 are provided with the extrusion devices 2; the one-way valve 6 is opened in the negative pressure tank 8. And one end of the driving handle 14 is provided with a limiting ball 13. The middle part of the lower end of the rotating block 7 is provided with a key groove 15, a connecting key 16 is arranged inside the key groove 15, and the connecting key 16 is fixed on the inner wall of the driving box 10.
During specific work, drive handle 14 rotates, drive handle 14 transmits power for actuating lever 11 through driving-disc 12, actuating lever 11 drives turning block 7 at the internal rotation of drive case 10, the laminating is with keeping away from fixed and rotation that are used for controlling turning block 7 between connection key 16 and the 10 inner walls of drive case, when turning block 7 rotates, the one end that rotates fast 7 drives and rotates post 5 rotatoryly, blade 1 is driven the cutting this moment, after cutting out tiny wound when blade 1, extrusion wound about extrusion device 2, blood passes through transfer line 4, still be equipped with a buffer spring two 101 between blade 1 and the transfer line 4, it is too big to prevent that the wound from being cut, the blood that gets into in transfer line 4 flows through check valve 6 and collects at last in negative pressure case 8, accomplish the collection of blood. According to the vacuum blood sampling knife, the backflow of blood is effectively prevented by the design that the infusion tube is matched with the one-way valve; the operation is nimble, has effectively improved the security of blood sampling, simultaneously through designing the extrusion device at the edge of blade, when taking a blood sample, extrudees the wound position from top to bottom, does benefit to the blood sampling, and the power of device adopts the drive arrangement of rotary type, realizes cutting blood sampling effect.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.
Claims (6)
1. A vacuum lancing knife, comprising:
the knife comprises a blade (1) and a knife handle (3), wherein the knife handle (3) is fixed at the rear end of the blade (1);
the infusion tube (4) is arranged on the inner side of the blade (1), and a one-way valve (6) is arranged on the infusion tube (4);
the negative pressure box (8) is positioned behind the knife handle (3), the negative pressure box (8) is rotatably provided with a rotating column (5), the infusion tube (4) is fixed on the rotating column (5), and one end provided with a one-way valve (6) is accommodated in the negative pressure box (8); a baffle plate (17) is vertically fixed in the negative pressure box (8) in a sliding manner, and one side of the baffle plate (17) is fixed on the inner wall of the negative pressure box (8) through a telescopic spring (9);
the driving box (10) is arranged close to the negative pressure box (8), a rotating block (7) is arranged in the driving box (10), one end of the rotating block (7) is connected with the rotating column (5), the other end of the rotating block is connected with a driving device, and the driving device comprises a driving rod (11), a driving disc (12) and a driving handle (14); the rotating block (7) is connected and installed on a driving rod (11), one end of the driving rod (11) penetrates through a driving box (10) to be connected with a driving disk (12), a driving handle (14) is installed at a non-circle center position of one end of the driving disk (12), and the driving handle (14) swings to drive the rotating block (7) to rotate;
the rear end of the blade (1) is provided with a second spring (101), the second spring (101) is connected with the knife handle (3), and the upper end and the lower end of the knife handle (3) are provided with the extrusion devices (2); the opening of the one-way valve (6) is positioned in the negative pressure box (8).
2. The vacuum lancet according to claim 1, wherein the driving handle (14) is provided with a stopper ball (13) at one end thereof.
3. The vacuum blood collecting knife according to claim 1, characterized in that a key slot (15) is formed in the middle of the lower end of the rotating block (7), a connecting key (16) is arranged in the key slot (15), and the connecting key (16) is fixed on the inner wall of the driving box (10).
4. The vacuum lancet according to claim 1, wherein the blade (1) is made of Cr12 steel.
5. The vacuum lancet according to claim 1, wherein the blade (1) has a thickness of 0.45 mm; the width is 0.6 mm.
6. The vacuum lancet according to claim 1, wherein the pressing means (2) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570841.8A CN112690789A (en) | 2020-12-26 | 2020-12-26 | Vacuum blood sampling knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011570841.8A CN112690789A (en) | 2020-12-26 | 2020-12-26 | Vacuum blood sampling knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112690789A true CN112690789A (en) | 2021-04-23 |
Family
ID=75511127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011570841.8A Pending CN112690789A (en) | 2020-12-26 | 2020-12-26 | Vacuum blood sampling knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112690789A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691467A (en) * | 2017-02-27 | 2017-05-24 | 青岛市中心血站 | Triggering structure of blood sampling device |
| CN106691472A (en) * | 2017-02-27 | 2017-05-24 | 青岛市中心血站 | Vacuum blood sampling cutter |
| US20180049684A1 (en) * | 2016-08-19 | 2018-02-22 | Pavol Ovcik Berresford | Enhanced Lancing Device with Suction |
| CN111616720A (en) * | 2020-05-25 | 2020-09-04 | 见才友 | Disinfection type heel hemostix with blade hiding structure |
-
2020
- 2020-12-26 CN CN202011570841.8A patent/CN112690789A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180049684A1 (en) * | 2016-08-19 | 2018-02-22 | Pavol Ovcik Berresford | Enhanced Lancing Device with Suction |
| CN106691467A (en) * | 2017-02-27 | 2017-05-24 | 青岛市中心血站 | Triggering structure of blood sampling device |
| CN106691472A (en) * | 2017-02-27 | 2017-05-24 | 青岛市中心血站 | Vacuum blood sampling cutter |
| CN111616720A (en) * | 2020-05-25 | 2020-09-04 | 见才友 | Disinfection type heel hemostix with blade hiding structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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