CN201968686U - Safety holding device for pen type blood collection needle - Google Patents
Safety holding device for pen type blood collection needle Download PDFInfo
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- CN201968686U CN201968686U CN2010206491979U CN201020649197U CN201968686U CN 201968686 U CN201968686 U CN 201968686U CN 2010206491979 U CN2010206491979 U CN 2010206491979U CN 201020649197 U CN201020649197 U CN 201020649197U CN 201968686 U CN201968686 U CN 201968686U
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- blood taking
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Abstract
The utility model relates to a safety holding device for a pen type blood collection needle, which comprises an outer tube, a needle seat and a spring. The lower section of the needle seat is provided with a spring support platform, and the periphery of the needle seat is provided with a round plate connected with the platform through a cross bridge; and the inner edge of the round plate is provided with a pair of arc-shaped flat pieces protruding towards the axial center, and the outer edge of the round plate is provided with a pair of wing pieces expanding downwards and outwards. The front end of the outer tube is provided with a conical head, an inner hole of the conical head is communicated with an inner cavity of the outer tube, the wall of the inner hole of the conical head is provided with a pair of arc-shaped columns towards the inner side of the tube, the arc-shaped columns extend towards the inside of the tube, and the bottoms of the columns are respectively provided with a flanged side. The inner wall of the lower section of the outer tube is provided with an annular protruding part. The arc-shaped flat pieces and the flanged sides at the bottoms of the arc-shaped columns can be embedded mutually so that the spring is compressed in the inner cavity of the conical head through the needle seat. When being used, the safety holding device is fixedly screwed with the blood collection needle. After blood collection, only a blood collection tube needs to be inserted more deeply, the arc-shaped wing pieces and the arc-shaped flat pieces at the lower section of the needle seat can expand outwards under the effect of a cap stopper of the blood collection tube to be released from clamping of the flanged sides of the columns, the needle seat can be released, the spring can be reset, and the needle seat and the pen type blood collection needle can retract into the tube.
Description
(1) technical field
This utility model relates to a kind of medical apparatus and instruments, a kind of specifically safe needle holder owing to the pen type blood taking needle, and it cooperates with pen type blood taking needle and vacuum test tube, is used for the gatherer process of venous blood specimen.
(2) background technology
People are used for correctly diagnosing the illness by various means collections, acquisition Human Physiology, pathological information; Wherein the collection to blood preparation has following three kinds of approach usually: (1) subcutaneous blood sampling is used for the simple and easy differential counting of blood constituent is detected more; Subcutaneous (the solid or prismatic) blood taking needles that use more; (2), venous blood collection, can carry out detailed detection to nosetiology in hematology, the blood and other related discipline indexs, in clinical, use very extensively, use pen type or split type vein blood taking needle more; (3), arterial blood drawing, how in critical emergency case, aterial blood gas indexes following is detected, use lessly, use the arterial blood drawing syringe to gather more.Collection and check to blood preparation, its objective is by detection bacteriology, virological infection level in analyzing and testing, acquisition blood blood component and the blood of blood constituent, to understand Human Physiology and pathologic condition, or the effect after the understanding Drug therapy, and to advancing of disease, lapse to and judgement etc. is made in prognosis.
In venous blood collection, various countries clinical medical and nursing personnel, most pen type blood taking needle or split type vein blood taking needles of using; This utility model only relates to the puncture blood collecting utensil in the venous blood gatherer process.
The pen type blood taking needle: its structure is the needle tubing that connects, and all there is sharp cutting edge at its two ends; Hypomere is fixed on the needle stand in the needle tubing, and front end is called that venipuncture needle, rear end are called collection blood pin, collection blood wire surface has blood resistance unit, needle tubing two ends that protective casing (structure is seen accompanying drawing 1) is arranged.During use, the blood taking needle rotation is fixed on the needle holder outer cylinder front end, implements venipuncture, after the success, vacuum test tube is inserted needle holder rear end cavity, make collection blood pin rear end cutting edge pass blood resistance unit and run through and thrust the vacuum tube plug, under suction function, in blood suction blood taking tube; So repeatedly, can realize the collection of multitube time blood specimen; Blood sampling finishes, and extracts venipuncture needle, and local hemostasis to depleted blood taking needle, needs the nurse once more with blood taking needle front end sheath, is enclosed within the blood taking needle appearance again, rotates needle body then, and blood taking needle is taken off from needle holder, blood taking needle is discarded in the waste holder again; Nurse's both hands overlap process again in this operation, and owing to multiple reason, nurse's finger is usually easily stabbed by needle point, and needle stick injury takes place, and causes the infection or the propagation of blood borne disease, as hepatitis C, acquired immune deficiency syndrome (AIDS); Consequence is extremely serious.
Split type vein blood taking needle: its structure is on the flexible pipe tail end needle stand of venoclysis needle, connects a collection blood pin and constitutes (structure is seen accompanying drawing 2).It in use, also need the rotation of collection blood pin is fixed on the needle holder outer cylinder front end, hand-held venipuncture is implemented puncture at vein, after the success, vacuum test tube is inserted needle holder rear end cavity, make collection blood pin cutting edge pass blood resistance unit and thrust the vacuum tube plug, under suction function, blood is sucked blood taking tube.When needing, so repeatedly, can realize the multitube blood sampling; Blood sampling finishes, and extracts venipuncture needle, and local hemostasis is disposed depleted blood taking needle, needs nurse's hands to pinch collection blood pin needle stand appearance, rotates needle body then, and blood taking needle is taken off from needle holder, is discarded in the waste holder together with venipuncture needle; In the said process, because the blood sampling flexible pipe is longer, about 20 centimetres, the remaining blood in the venipuncture needle of front end and the flexible pipe, in the process that blood taking needle and flexible pipe take off, blood can trickle everywhere, contaminated environment or human body; At present, in clinical position, nurse and waste treatment personnel's finger also is very easy to be hindered by the blood taking needle spine, infects blood borne disease because of needle stick injury causes; Consequence is extremely serious.
Add up according to the American National medical department: the needle stick injury that occurs in injection puncture and blood collection procedure accounts for 26% of total injury incidence rate; Federal Government was issued " safety of acupuncture and prevention " bill in 2000: require medical institutions to be necessary for the employee safe medical apparatus is provided; U.S. National Institute Department of Health formulates blood source disease working standard: injection, puncture procedure rules, firmly stop: hands takes off syringe needle, bending syringe needle, from the broken needle head, overlap the behavior of syringe needle again.
China is because economy and historical reasons are to use the syringe puncture to gather and use the mode of above two kinds of blood taking needles collection more than clinical blood sampling is operated.According to China's medical statistics, scholarly journal report, the clinical care practitioner by the incidence rate of needle stick injury up to more than 80%.Endanger extremely serious.
In sum, clinical press for a kind of can be in above-mentioned blood collection procedure, can effectively avoid needle stick injury, eliminate the safe and reliable blood taking needle utensil of risk.Just at present, the domestic neither one of still not going back can be disclosed with the technical scheme of simple economy, practical safety.
(3) summary of the invention
This utility model is exactly the solution that proposes at the existing deficiency of above-mentioned venous blood collection process.Have safe, reliable, easy, practical, inexpensive, can simplify the clinical manipulation program, increase work efficiency, eliminate the characteristics of needle stick injury; Specifically, it is a kind of safe needle holder, cooperates with the pen type blood taking needle of present use, be used for the gatherer process of vacuum test tube to venous blood, can accomplish to make present pen type blood taking needle to become disposable use, ruin the shielding of type and needle point automatically, avoid the generation of needle stick injury.
A kind of pen type blood taking needle of this utility model safety needle holder is realized by following scheme: a kind of pen type blood taking needle safety needle holder, form by urceolus, needle stand, spring; It is characterized in that: needle stand central authorities are porose, there is screw thread the medial wall, hole, the pen type blood taking needle can spin, the needle stand hypomere has the spring support platform, platform diameter is slightly larger than the spring race diameter, the outer pocketed springs of needle stand, spring discharge length be greater than needle stand from the spring support platform distance to pen type blood taking needle venipuncture needle point, the spring support platform links to each other with the disk inner edge that is positioned at its periphery by cross-bridges, with the vertical disk inner edge of cross-bridges the outstanding arc plain film in one subtend axle center is arranged, the disk outer rim corresponding with the arc plain film has the arcuated fin piece of a pair of downward abduction, and the diameter of arcuated fin piece equals the urceolus internal diameter.Front end at urceolus has conehead, and the conehead endoporus communicates with outer tube inner chamber, and the conehead endoporus dwindles in the port, forms a constriction step; On the outer cylinder front end wall of conehead basilar part, have pair of holes with the axle center symmetry, parallel with axis and extend in a tube arc column is respectively arranged in inboard, two holes, the crimping of turning up is arranged at the column bottom; Urceolus hypomere inwall has the prominent ridge of an annular.
The prominent ridge of wall circular is greater than needle stand hypomere arcuated fin piece base to the length between the needle tip to the distance at conehead bore openings place in the urceolus hypomere; The prominent ridge of wall circular is to the distance at the urceolus lower ending opening place length greater than blood taking needle hypomere collection blood pin in the urceolus hypomere, and the total length of urceolus is greater than the total length of pen type blood taking needle.
The crimping that turns up of the arc column bottom of the arc plain film of needle stand middle and lower part and urceolus inside is chimeric mutually, needle stand is compressed in spring in the space that needle stand spring support platform and urceolus conehead endoporus form.
Above structure has been formed a kind of pen type blood taking needle of this utility model safety needle holder.
During use, spin a kind of pen type blood taking needle of this utility model safety needle holder and pen type blood taking needle fixing, operate with conventional venous blood acquisition method: take off the front end sheath, the row vein puncture, after the success, vacuum test tube is inserted needle holder rear end cavity, make collection blood pin cutting edge pass blood resistance unit and thrust the vacuum tube plug, under suction function, with blood suction blood taking tube.
When blood sampling finishes (last blood taking tube collection finishes), blood taking tube is taken off together with needle holder, the vein local hemostasis.Method of disposal to the blood taking needle after using is: external, firmly vacuum test tube is inserted the needle holder urceolus once more, the extruding of blood taking tube helmet outer rim can make the arcuated fin piece pressurized of needle stand outer rim and the abduction expansion, makes the arc plain film break away from the restriction of the crimping that turns up of arc column; Spring is discharged in urceolus, expand, pin needle stand and pen type blood taking needle together are recovered to the outer tube inner chamber of needle holder rapidly.Needle point is shielded, eliminate medical personnel by the danger of needle stick injury.
Because this utility model has adopted the structure that is compressed in the needle holder urceolus needle stand and utilizes needle stand abduction fin triggering retracting spring to spring, make this utility model after use, can utilize the triggering of blood taking tube, blood taking needle and needle stand are recovered in the needle holder urceolus in the lump.Have easy to usely, be applicable to any standard pen type blood taking needle, make it to become security apparatus, eliminate blood taking needle ui medical personnel's needle stick injury.
(4) description of drawings
Accompanying drawing 1 is common pen type blood taking needle structural representation;
Accompanying drawing 2 is overall structure decomposing schematic representations of a kind of pen type blood taking needle of this utility model safety needle holder;
Accompanying drawing 3 is outer tube structure sketch maps of a kind of pen type blood taking needle of this utility model safety needle holder;
Accompanying drawing 4 is a kind of pen type blood taking needle of this utility model safety needle holder needle stand structural representations;
Accompanying drawing 5 is self-contained structural representations of a kind of pen type blood taking needle of this utility model safety needle holder;
Accompanying drawing 6 be a kind of pen type blood taking needle of this utility model safety needle holder in use with pen type blood taking needle B spin the combination after structural representation;
Accompanying drawing 7 be a kind of pen type blood taking needle of this utility model safety needle holder after use, the needle holder structure is unmake, needle tubing and needle stand retract to the structural representation that is protected fully in the needle holder urceolus automatically;
(5) specific embodiment
By accompanying drawing 1 as can be known, traditional pen type blood taking needle, its structure is a minute hand A who connects needle stand; Its two ends all have sharp cutting edge; The middle hypomere of needle tubing is bonded and fixed in the needle stand A1, and its front end (long end) has blood resistance unit A3, two ends that the protective casing protection is arranged for venipuncture needle A2, rear end (short end) for collection blood pin A4, collection blood wire surface in addition; During use, the blood taking needle rotation is fixed on needle holder C outer cylinder front end; To using the disposal of the depleted blood taking needle in back, process needs the nurse once more with blood taking needle front end sheath as described above, is enclosed within the blood taking needle appearance again, and needle body is unclamped in rotation then, and blood taking needle is taken off from needle holder, blood taking needle is discarded in the waste holder again; In this process, because the crossed work that overlaps again of nurse's both hands, can be during a blow is clinical owing to multiple reason, as artificial abortion collide mutually, the moving suddenly of position, nurse's finger is easily stabbed by needle point, make pen type blood taking needle rule of operation have serious needle stick injury risk.
By accompanying drawing 2 as can be known, the STRUCTURE DECOMPOSITION sketch map of a kind of pen type blood taking needle of this utility model safety needle holder, it is by forming with the lower part: urceolus 1, needle stand 2, spring 3.The length of spring 3 is greater than the length sum of pen type blood taking needle needle stand to venipuncture needle.
Accompanying drawing 3 is outer tube structure sketch maps of a kind of pen type blood taking needle of this utility model safety needle holder: by Fig. 3-1., 3-2. as can be known, urceolus 1 rounded barrel-like structure, its inner hollow, the outside crimping of urceolus lower edge forms the handle 1e that shakes hands, there is circular conehead the urceolus upper end, its central authorities are porose, and the aperture is reduced into 1a, communicate with outer tube inner chamber; On the urceolus lateral wall of conehead basilar part, have pair of holes 1b with the axle center symmetry, an arc column that extends in tube is respectively arranged in inboard, two holes, the column bottom has the crimping of turning up, urceolus hypomere inwall that the prominent ridge 1c of one annular is arranged; Hypomere inwall in urceolus has the prominent ridge 1d of an annular, and the ring internal diameter that prominent ridge forms is less than the urceolus internal diameter.
By accompanying drawing 4 as can be known, be the structural representation of a kind of pen type blood taking needle of this utility model safety needle holder needle stand.There is a through hole 2a front end center of needle stand 2; By accompanying drawing 4-1., accompanying drawing 4-2. with accompanying drawing 4-3. as can be known; At the middle hypomere of needle stand 2, there is an annular outstanding, be spring support platform 2c, in the outer rim of support platform 2c one ring-type square position 2g is arranged, connect with cross-bridges 2f between the two, the arc plain film 2d of subtend axle center stretching, extension is arranged with the vertical direction of cross-bridges 2f in the ring-type square position; In the outer rim of two arc plain film 2d, the arcuated fin piece 2e of a pair of abduction is downwards arranged.
Accompanying drawing 5 is overall structure sketch maps of a kind of pen type blood taking needle of this utility model safety needle holder; As seen from the figure: the circular disk 2c of hypomere goes up bearing spring 3 in the needle stand 2, needle stand 2 is positioned at the inner chamber epimere of urceolus 1, the a pair of arc plain film 2c that stretches to the axle center of the inner edge of the circular disk 2g of needle stand 2 is positioned at the chimeric locking of arc crimping 1c that arc column lower end that a pair of outside tube inner chamber of outer cylinder front end inwall perforate 1b inboard extends turns up; Thus, needle stand 2 is compressed in spring 3 in the space between needle stand and the urceolus conehead endoporus.The abduction arcuated fin piece 2e of the circular disk of hypomere in the needle stand 2, its outer rim is close to outer tube inner wall.
More than constitute the overall structure of a kind of pen type blood taking needle of this utility model safety needle holder.
Accompanying drawing 6 be a kind of pen type blood taking needle of this utility model safety needle holder in use with pen type blood taking needle B spin the combination after structural representation, as seen from the figure, the pen type blood taking needle is screwed in the threaded interior hole of front end needle stand of a kind of pen type blood taking needle of this utility model safety needle holder and is fixed.Take off sheath, enter state to be used.
Accompanying drawing 7 be a kind of pen type blood taking needle of this utility model safety needle holder after use, the needle holder structure is ruined type, needle tubing and needle stand and is retracted to the structural representation that is protected fully in the needle holder urceolus automatically; In conjunction with the accompanying drawings 6, accompanying drawing 7, when a kind of pen type blood taking needle safety needle holder of the present utility model need use, pull up the sheath 6 of blood taking needle front end, according to the venipuncture routine, treating partly sterilised of puncture portion, tie up the vein tourniquet, hand-held this utility model safety blood taking pin urceolus 5, row vein puncture, wait to puncture successfully after, hold fixedly venipuncture needle 1a position of urceolus 5 (needle holder), an other hands is taken vacuum test tube, the plug end is inserted urceolus 5 tail end cavitys, and thumb is pressed the vacuum test tube bottom, and four refer to separately control urceolus crimping 5e, finger is firmly held mutually, vacuum test tube is inserted urceolus 5, make collection blood pin 1b puncture blood resistance unit and pass vacuum test tube front end plug, negative pressure of vacuum can enter vacuum test tube with the suction of vein blood vessel inner blood in the blood taking tube.After blood volume to be collected reaches requirement, extract blood taking tube; If desired, can above-mentioned repeatedly action, realize the collection of multitube venous blood.When treating that blood sampling finishes, it is slotting deeply in urceolus with vacuum test tube to exert oneself once more, the arcuated fin piece 2e of needle stand 2 hypomere abductions is outwards expanded, needle stand is broken away from be positioned at the clamping down on of the crimping 1c that turns up, the i.e. releasing of the arc column lower end that outer tube inner chamber extends to turn up crimping 1c, needle stand is released the locking of arc-like sheet 2d entad on the needle stand circular disk; After extracting blood taking tube, at the active force of spring 3; Spring makes needle stand move to the urceolus lower end, drives needle tubing together to the inner retraction of urceolus.When arcuated fin piece runs into the prominent ridge 1d of the annular of urceolus 1 inwall hypomere, be limited to this position, and can not continue to move down, simultaneously, the prominent ridge of annular is to the distance of the urceolus opening part length greater than needle stand hypomere collection blood pin, make needle stand 2 and collection blood pin, blood resistance unit can not expose outside urceolus bottom outer rim, also make when blood taking tube is outwards extracted, can break away from the fastening force constraint between collection blood pin and the plug smoothly.Spring length is greater than the spacing of needle stand 2 spring support platform 2c to the venipuncture needle point; The prominent ridge 1d of annular arrives the distance of venipuncture needle needle point greater than needle stand 2 arcuated fin piece bottoms to the distance between the urceolus conehead 1a; The prominent ridge of wall circular is greater than the distance of needle stand hypomere arcuated fin piece 2e bottom to the blood resistance unit lower end to the distance of urceolus opening part in the needle holder urceolus hypomere.Above structure and condition have guaranteed can not expose to outside the urceolus after the needle tubing retraction enters in the urceolus.
Claims (6)
1. a pen type blood taking needle safety needle holder is made up of sheath (1), spring (3), needle stand (2); It is characterized in that: needle stand (2) central authorities porose (2a), the needle stand hypomere has spring support platform (2c), its periphery pocketed springs (3), spring support platform (2c) links to each other with disk (2g) inner edge by a cross-bridges (2f), with the vertical disk of cross-bridges (2f) (2g) inner edge the outstanding arc plain film (2d) in one subtend axle center, the arcuated fin piece (2e) that disk (2g) outer rim has a pair of downward abduction is arranged; Outer cylinder front end has conehead, the conehead endoporus dwindles (1a) at opening part, this hole communicates with urceolus (1) inner chamber, corresponding perforate (1b) is arranged on the outer tube wall of conehead basilar part, there is the arc column that extends in the subtend tube perforate (1b) inboard, the column bottom has the crimping of turning up (1c), urceolus hypomere inwall that the prominent ridge (1d) of one annular is arranged.
2. according to the said a kind of pen type blood taking needle safety needle holder of claim 1, it is characterized in that: the hypomere of needle stand (2) has a spring support platform (2c), and platform diameter is slightly larger than spring (3) race diameter.
3. according to the said a kind of pen type blood taking needle safety needle holder of claim 1, it is characterized in that: the periphery of spring support platform (2c) that is arranged in the hypomere of needle stand (2) has a disk (2g), (2f) interconnects by a cross-bridges, disk (2g) inner edge perpendicular to cross-bridges (2f) has the outstanding arc plain film (2d) in a subtend axle center, perpendicular to outer rim in the disk of cross-bridges the arcuated fin piece (2e) of a pair of downward abduction is arranged, the diameter of arcuated fin piece equals the urceolus internal diameter.
4. according to the said a kind of pen type blood taking needle safety needle holder of claim 1, it is characterized in that: the front end of urceolus has conehead, conehead is porose and communicate with outer tube inner chamber, on conehead basilar part urceolus antetheca, a pair of perforate (1b) is arranged, the inboard of (1b) is to there being a pair of arc column that extends in tube in the hole, basilar part at the arc column has the crimping of turning up (1c), the bottom margin of urceolus turns up to form and holds handle (1e), urceolus hypomere inwall has the prominent ridge (1d) of an annular, and the ring internal diameter that prominent ridge (1d) forms is less than urceolus (1) internal diameter.
5. according to the said a kind of pen type blood taking needle safety needle holder of claim 1, its spy is characterised in that: the length of spring (3) be greater than needle stand from spring support platform (2c) distance to pen type blood taking needle venipuncture needle point.
6. according to the said a kind of pen type blood taking needle safety needle holder of claim 1, it is characterized in that: the prominent ridge (1d) of wall circular is greater than needle stand hypomere arcuated fin piece base to the length between the needle tip to the distance at conehead bore openings place (1a) in the urceolus hypomere; The prominent ridge of wall circular is to the distance at the urceolus lower ending opening place length greater than blood taking needle hypomere collection blood pin in the urceolus hypomere, and the total length of urceolus (1) is greater than the total length of pen type blood taking needle (B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206491979U CN201968686U (en) | 2010-11-29 | 2010-11-29 | Safety holding device for pen type blood collection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206491979U CN201968686U (en) | 2010-11-29 | 2010-11-29 | Safety holding device for pen type blood collection needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201968686U true CN201968686U (en) | 2011-09-14 |
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ID=44573794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206491979U Expired - Fee Related CN201968686U (en) | 2010-11-29 | 2010-11-29 | Safety holding device for pen type blood collection needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201968686U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548282A (en) * | 2015-01-12 | 2015-04-29 | 江苏磐宇科技有限公司 | Production technology of anti-puncturing protection device |
| CN109498171A (en) * | 2019-01-21 | 2019-03-22 | 刘贞宽 | Blood taking needle recover and its component |
-
2010
- 2010-11-29 CN CN2010206491979U patent/CN201968686U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548282A (en) * | 2015-01-12 | 2015-04-29 | 江苏磐宇科技有限公司 | Production technology of anti-puncturing protection device |
| CN109498171A (en) * | 2019-01-21 | 2019-03-22 | 刘贞宽 | Blood taking needle recover and its component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20121129 |