CN217471952U - Arteriovenous blood drawing needle for pediatrics - Google Patents

Abstract

The utility model provides a pediatric arteriovenous blood drawing needle, include: the puncture needle is arranged at the input end of the conversion pipe, the arterial blood sample collection pipe is connected to the arterial blood sample output end of the conversion pipe, and the venous blood sample collection pipe is connected to the venous blood sample output end of the conversion pipe. The utility model discloses a blood needle is taken out to sound arteries and veins for paediatrics selects the collection route of intercommunication arterial blood sample or the collection route of venous blood sample through the transition tube, through a vascular puncture, accomplishes arterial blood and venous blood's blood sample collection, has alleviateed children patient's a lot of puncture misery, has reduced children patient and has refused the medical risk that the cooperation leads to, has improved medical staff's blood sample collection efficiency.

Description

Arteriovenous blood drawing needle for pediatrics

Technical Field

The utility model belongs to the technical field of paediatrics medical instrument technique and specifically relates to a paediatrics is with sound arteries and veins blood drawing needle is related to.

Background

In the daily nursing process, the inventor finds that the child patient generally has strong conflict on the blood drawing process, mild patients have nervous, crying and serious resistant behaviors such as limb movement, and the blood drawing can be actually realized only by matching and fixing the family members of the patient. Particularly, when a child patient simultaneously draws arterial blood and venous blood, in clinical operation, an arterial blood drawing needle needs to be firstly inserted into a wrist blood vessel, a few milliliters of arterial blood sample is drawn by using the arterial blood drawing needle tube, then a venous blood drawing needle is inserted into the wrist blood vessel, an upper venous negative pressure blood drawing tube is connected, and a dozen milliliters of venous blood samples (4 and 5 blood vessels) are drawn. This makes the operation that children patient need carry out twice puncture blood drawing needle in wrist department, has increased children patient's conflict mood and the irresistance risk of not cooperating, has also reduced medical personnel's work efficiency simultaneously.

How to relieve the pain of the child patient in drawing arterial blood and venous blood is important for the research of the technicians in the field.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a paediatrics is with artery and vein blood sampling needle through a vascular puncture, has both accomplished the collection of arterial blood sample, has accomplished the collection of venous blood sample again.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an arteriovenous blood drawing needle for pediatrics, comprising: the puncture needle is arranged at the input end of the conversion tube, the arterial blood sample collection tube is connected with the arterial blood sample output end of the conversion tube, and the venous blood sample collection tube is connected with the venous blood sample output end of the conversion tube; wherein the content of the first and second substances,

the transition tube includes: the casing, the both wings of casing are provided with handheld handle, install blood sample guide mechanism in the casing, blood sample guide mechanism includes: the flow distribution plate comprises a flow distribution plate, a drainage plate and a flow guide plate which are tightly attached in sequence, wherein a main interface is arranged on the end face of the flow distribution plate facing to an input end, the main interface is connected with the input end through an inner catheter, an arterial blood sample port and a venous blood sample port are arranged on the end face of the flow distribution plate facing to the drainage plate, and a Y-shaped flow passage for connecting the main interface, the arterial blood sample port and the venous blood sample port is arranged in the flow distribution plate; the flow guide plate is provided with an arterial blood sample flow guide hole and a venous blood sample flow guide hole which penetrate through the plate surface, and the arterial blood sample flow guide hole and the venous blood sample flow guide hole are respectively connected with the arterial blood sample output end and the venous blood sample output end; the drainage plate can clamp between flow distribution plate and guide plate around self axis rotation ground, is provided with on the drainage plate to connect artery blood sample mouth and artery blood sample water conservancy diversion hole and constitute the artery blood sample route, perhaps connects vein blood sample mouth and vein blood sample water conservancy diversion hole and constitutes the drainage hole of vein blood sample route.

Furthermore, be provided with the application of force portion that radially stretches out on the drainage plate the casing, the width of application of force portion is less than the thickness of drainage plate, be provided with on the casing and only allow application of force portion around drainage plate axis pivoted opening the opening part is provided with the sealing rubber ring.

Further, the maximum angle of rotation of the drainage plate is 180 degrees.

Furthermore, the flow distribution plate and the guide plate are fixed on the inner side wall of the shell, a rotating shaft penetrates through the drainage plate, and the drainage plate rotates around the rotating shaft.

Furthermore, the end face of the guide plate facing the drainage plate is provided with two positioning concave pits, and the end face of the drainage plate facing the guide plate is provided with positioning convex points matched with the positioning concave pits.

Further, the inner conduit is a hose.

Furthermore, the handheld handle is hinged to the shell, the middle of the handheld handle is hinged to an extrusion rod penetrating through the shell and extending inwards, the extrusion rod points to two sides of the inner catheter in opposite directions, an arc-shaped extrusion head is arranged at the tail end of the extrusion rod, and a return spring is sleeved on the extrusion rod.

Furthermore, the inner conduit penetrates through a positioning snap ring, and the extrusion rod penetrates through the positioning snap ring, so that the extrusion head is positioned on the inner side of the positioning snap ring.

Further, the extrusion head is made of soft materials with certain elasticity.

Furthermore, a shear nail is inserted into the extrusion rod and is clamped outside the shell.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a paediatrics is with artery and vein blood drawing needle selects the collection route of intercommunication artery blood sample or the collection route of vein blood sample through the transition tube, through a blood vessel puncture, accomplishes the blood sample collection of artery blood and vein blood, has alleviateed children patient's many times puncture misery, has reduced children patient and has refused the medical risk that the cooperation leads to, has improved medical staff's blood sample collection efficiency;

the force application part on the drainage plate is exposed outside the shell of the conversion tube, so that the force application operation is facilitated to change the passage, the width of the force application part is smaller than the thickness of the drainage plate, the contact of a blood sample in the passage and the outside air can be reduced, the pollution can be avoided, and the sealing ring can be arranged to avoid the pollution;

the rotation angle of the drainage plate is influenced by the length of the opening on the shell, and the rotation angle of the drainage plate is matched with the interval angle of the collection channel of the arterial blood sample and the collection channel of the venous blood sample;

the matching of the positioning concave pits and the positioning convex points can accurately guide and feed back whether the rotary drainage plate is connected with the blood sample collecting passage;

the inner conduit is a hose, so that the inner conduit is conveniently pressed and closed by opposite stress;

after the hand-held handles apply force in opposite directions, the extrusion rods push the extrusion heads in opposite directions, the two extrusion heads press the inner catheter to be narrowed to be closed, the inner catheter can be temporarily blocked, a blood sample collection passage is further blocked, and the hand-held handles can be reset by the reset springs;

the positioning snap ring can play a role in guiding the movement of the extrusion rod and promote the extrusion heads to move oppositely;

the extrusion head made of soft materials can prevent the hard extrusion contact from damaging the inner catheter when the inner catheter is blocked.

The shear pin can keep the position of the handheld handle relatively fixed before the handheld handle is pressed, so that medical staff can conveniently hold the handheld handle to perform puncture operation, and after opposite extrusion forces are applied to the handheld handle, the shear pin is broken, so that the extrusion rod can freely move, and the action of blocking the inner catheter is completed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a pediatric arteriovenous blood drawing needle of the present invention;

FIG. 2 is a schematic cross-sectional view of the transition duct of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the arteriovenous blood drawing needle for pediatrics of the present invention;

the device comprises a puncture needle 1, a conversion tube 2, a handheld handle 3, a force application part 4, an arterial blood sample output end 5, an arterial blood sample collection tube 6, a venous blood sample collection tube 7, an external hose 8, a venous blood sample output end 9, an opening 10, an input end 11, a shell 12, a first hinge shaft 13, a second hinge shaft 14, a reset spring 15, an extrusion rod 16, a shear nail 17, an arterial blood sample port 18, a positioning salient point 19, a drainage hole 20, an arterial blood sample diversion hole 21, a venous blood sample diversion hole 22, a diversion plate 23, a positioning pit 24, a drainage plate 25, a flow distribution plate 26, an extrusion head 27, a main interface 28, a Y-shaped flow channel 29, a venous blood sample port 30, a positioning snap ring 31, an internal catheter 32, an arterial blood sample collection connector 33, a puncture needle connector 34 and a rotating shaft 35.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Referring to fig. 1, 2 and 3, in order to provide a specific embodiment of an arteriovenous blood drawing needle for pediatrics of the present embodiment, fig. 1 and 2 show that an arterial blood sample collection path is an open path, and a venous blood sample collection path is an open path, in which state an arterial blood sample is collected; fig. 3 shows a state in which the arterial blood sample collection path is open and the venous blood sample collection path is open, and a venous blood sample is collected.

The arteriovenous blood drawing needle for paediatrics in this embodiment specifically includes: the left end of the puncture needle 1 is a pointed end so as to facilitate puncture, the right end of the puncture needle 1 is provided with a puncture needle connector 34, and the inner side of the puncture needle connector 34 is provided with internal threads.

The left end of the switching tube 2 is provided with an input end 11, an external thread is arranged on the input end 11, and the puncture needle 1 is arranged on the input end 11 of the switching tube 2 through the matching of the internal thread and the external thread. The right-hand member of switching tube 2 is provided with arterial blood sample output 5 and venous blood sample output 6, and arterial blood sample output 5 inboard is provided with the internal thread, is provided with arterial blood sample collection union coupling head 33 on the arterial blood sample collection pipe 6, is provided with the external screw thread on the arterial blood sample collection union coupling head 33, and through the cooperation of internal and external screw thread, arterial blood sample collection pipe 6 is connected with the arterial blood sample output 5 of switching tube 2, and in this embodiment, arterial blood sample collection pipe 6 specifically is needle tubing for arterial blood collection. The venous blood output end 6 is sleeved with an outer hose 8 and is connected with a venous blood collection tube 7 through the outer hose 8, and in the embodiment, the venous blood collection tube 7 is specifically a negative pressure type venous blood collection tube.

The transition tube 2 specifically includes: casing 12, install blood sample guide mechanism in the casing 12, blood sample guide mechanism specifically includes: from a left side to the right side flow distribution plate 26, drainage plate 25 and the guide plate 23 of closely laminating in proper order, flow distribution plate 26 and guide plate 23 are fixed on the inside wall of casing 12 through modes such as pasting or hot melt, wear to having pivot 35 on the drainage plate 25, and drainage plate 25 can revolute pivot 35 and rotate.

The end surface of the flow distribution plate 26 facing the input end 11 is provided with a main connector 28, the main connector 28 is connected with the input end 11 through an inner conduit 32, the inner conduit 32 is a hose, the inner conduit 32 penetrates through a positioning snap ring 31, and the positioning snap ring 31 is fixedly connected with the inside of the shell 12. The end face of the diversion plate 26 facing the drainage plate 25 is provided with an arterial blood sample port 18 and a venous blood sample port 30, and a Y-shaped flow channel 29 for connecting the main interface 28, the arterial blood sample port 18 and the venous blood sample port 30 is arranged inside the diversion plate 26.

The guide plate 23 is provided with an arterial blood sample guide hole 21 and a venous blood sample guide hole 22 which penetrate through the plate surface, the arterial blood sample guide hole 21 and the venous blood sample guide hole 22 are respectively connected with the arterial blood sample output end 5 and the venous blood sample output end 9, and the end surface of the guide plate 23 facing the drainage plate 25 is provided with two positioning pits 24.

The drainage plate 25 is clamped between the flow distribution plate 26 and the flow guide plate 23, a drainage hole 20 is formed in the drainage plate 25, a positioning convex point 19 matched with the positioning concave hole 24 is formed in the end face, facing the flow guide plate 23, of the drainage plate 25, the drainage hole 20 is connected with the arterial blood sample port 18 and the arterial blood sample flow guide hole 21 through rotation of the drainage plate 25, an arterial blood sample collection passage is formed, and at the moment, the positioning convex point 19 falls into one positioning concave hole 24; through rotating the drainage plate 25, make drainage hole 20 connect venous blood mouth 30 and venous blood water conservancy diversion hole 22, constitute the collection route of venous blood, at this moment, location bump 19 falls into in another location pit 24, and the cooperation of location pit 24 and location bump 19 can accurately guide and feed back whether rotate the drainage plate 25 and connect the blood collection route. The maximum angle of rotation of the drainage plate 25 is 180 degrees, the angle of rotation of the drainage plate 25 is affected by the length of the opening 10 in the housing 12, and the angle of rotation of the drainage plate 25 matches the angle of the separation between the collection path of the arterial blood sample and the collection path of the venous blood sample.

The collection access of communicating arterial blood sample or the collection access of venous blood sample is selected through the transition tube 2, and arterial blood and venous blood's blood sample collection is accomplished through a vascular puncture, has alleviateed children patient's a lot of puncture misery, has reduced children patient and has refused the medical risk that the cooperation leads to, has improved medical staff's blood sample collection efficiency.

The drainage plate 25 is provided with a force application part 4 which radially extends out of the casing 12, the width of the force application part 4 is smaller than the thickness of the drainage plate 25, the casing 12 is provided with an opening 10 which only allows the force application part 4 to rotate around the drainage plate 25, and a sealing rubber ring (not shown in the figure) is arranged at the opening 10. The force application part 4 on the drainage plate 25 is exposed outside the shell 12 of the conversion tube 2, so that the force application operation is facilitated to change the passage, the width of the force application part 4 is smaller than the thickness of the drainage plate 25, the contact between a blood sample and the outside air in the passage can be reduced, the pollution can be avoided, and the sealing ring is arranged to avoid the pollution.

Two wings of the shell 12 are provided with water drop type hand-held handles 3, the tips of the hand-held handles 3 are hinged on the shell 12 through first hinge shafts 13, the middle parts of the hand-held handles 3 are hinged with extrusion rods 16 through second hinge shafts 14, the extrusion rods 16 penetrate through the shell 12 and extend inwards, shear nails 17 are inserted into the extrusion rods 16, and the shear nails 17 are clamped on the outer side of the shell 12. The shear pin 17 can keep the position of the handle 3 relatively fixed before the handle 3 is pressed, so that medical staff can conveniently hold the handle 3 to perform puncture operation, and after opposite extrusion forces are applied to the handle 3, the shear pin 17 is broken to enable the extrusion rod 16 to freely move, so that the action of blocking the inner catheter is completed. The extrusion rod 16 passes through the positioning snap ring 31, the extrusion rod 16 is oppositely directed to two sides of the inner guide pipe 32, the tail end of the extrusion rod 16 is provided with an arc-shaped extrusion head 27, the extrusion head 27 is positioned at the inner side of the positioning snap ring 31, and the positioning snap ring 31 can play a role in guiding the movement of the extrusion rod 16 and promoting the extrusion heads 27 to oppositely move. The extrusion head 27 is made of soft material with certain elasticity, and the extrusion head 27 made of soft material can avoid the hard extrusion contact from damaging the inner catheter 32 when the inner catheter 32 is blocked. The extrusion rod 16 is sleeved with a return spring 15. After the hand-held handle 3 applies force in opposite directions, the extrusion rods 16 push the extrusion heads 27 in opposite directions, the two extrusion heads 27 press the inner conduit 32 to narrow to be closed, the inner conduit 32 can be temporarily blocked, then a blood sample collection passage is blocked, the blood sample collection passage can be blocked in emergency, the blood sample collection passage can be used when the puncture needle 1 needs to be pulled out, and the reset spring 15 can enable the hand-held handle 16, the extrusion heads 27 and the hand-held handle 3 to reset collectively.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a paediatrics is with arteriovenous bloodletting needle which characterized in that includes: the puncture needle is arranged at the input end of the conversion tube, the arterial blood sample collection tube is connected with the arterial blood sample output end of the conversion tube, and the venous blood sample collection tube is connected with the venous blood sample output end of the conversion tube; wherein the content of the first and second substances,

the transition tube includes: the casing, the both wings of casing are provided with handheld handle, install blood sample guide mechanism in the casing, blood sample guide mechanism includes: the flow distribution plate is provided with a main interface on the end surface facing the input end, the main interface is connected with the input end through an inner catheter, the end surface of the flow distribution plate facing the drainage plate is provided with an arterial blood sample port and a venous blood sample port, and a Y-shaped flow channel for connecting the main interface, the arterial blood sample port and the venous blood sample port is arranged in the flow distribution plate; the guide plate is provided with an arterial blood sample guide hole and a venous blood sample guide hole which penetrate through the plate surface, and the arterial blood sample guide hole and the venous blood sample guide hole are respectively connected with the arterial blood sample output end and the venous blood sample output end; the drainage plate can clamp between flow distribution plate and guide plate around self axis rotation ground, is provided with on the drainage plate and connects artery blood sample mouth and artery blood sample water conservancy diversion hole and constitute artery blood sample passageway, perhaps connects vein blood sample mouth and vein blood sample water conservancy diversion hole and constitutes the drainage hole of vein blood sample passageway.

2. The pediatric arteriovenous blood drawing needle according to claim 1, wherein the drainage plate is provided with a force application part which radially extends out of the housing, the width of the force application part is smaller than the thickness of the drainage plate, the housing is provided with an opening which only allows the force application part to rotate around the axis of the drainage plate, and the opening is provided with a sealing rubber ring.

3. The pediatric arteriovenous blood collection needle according to claim 2, wherein the maximum angle of rotation of the drainage plate is 180 degrees.

4. The pediatric arteriovenous blood drawing needle according to claim 3, wherein the shunt plate and the flow guide plate are fixed on the inner side wall of the housing, and the flow guide plate is penetrated to a rotating shaft and rotates around the rotating shaft.

5. The pediatric arteriovenous blood drawing needle according to claim 4, wherein the end surface of the flow guide plate facing the flow guide plate is provided with two positioning concave pits, and the end surface of the flow guide plate facing the flow guide plate is provided with positioning convex points matched with the positioning concave pits.

6. The pediatric arteriovenous blood spike of claim 5 wherein the inner catheter is a flexible tube.

7. The pediatric arteriovenous blood drawing needle according to claim 6, wherein the hand-held handle is hinged to the housing, the middle part of the hand-held handle is hinged with extrusion rods which penetrate through the housing and extend inwards, the extrusion rods face to two sides of the inner catheter, the tail ends of the extrusion rods are provided with arc-shaped extrusion heads, and the extrusion rods are sleeved with return springs.

8. The pediatric arteriovenous blood drawing needle according to claim 7, wherein the inner catheter passes through a positioning snap ring, and the extrusion stem passes through the positioning snap ring so that the extrusion head is positioned inside the positioning snap ring.

9. The pediatric arteriovenous blood collection needle according to claim 8, wherein the pressing head is made of a soft material having a certain elasticity.

10. The pediatric arteriovenous blood drawing needle according to claim 9, wherein a shear pin is inserted on the extrusion rod and is clamped outside the housing.

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