CN202477674U

CN202477674U - Artery puncture needle

Info

Publication number: CN202477674U
Application number: CN2011205716467U
Authority: CN
Inventors: 谢文钦
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-31
Filing date: 2011-12-31
Publication date: 2012-10-10
Anticipated expiration: 2021-12-31

Abstract

The utility model relates to an artery puncture needle, which comprises a light-transmitting sleeve seat, a detaining needle outer sleeve, a steel needle seat and a steel needle, wherein a tubular pressure measuring joint is arranged at the rear end of the light-transmitting sleeve seat; the remaining needle outer sleeve is arranged at the front end of the sleeve seat oppositely to the pressure measuring joint; and the steel needle is arranged on the steel needle seat. A containing slot respectively communicated with the detaining needle outer sleeve and the pressure measuring joint is arranged in the sleeve seat, and an elastic obstructing block which can be operated and slides between a puncture position and a pressure measuring position is movably arranged in the containing slot in a matched mode. A horizontal-through pressure measuring channel is arranged at the obstructing block, and a blood discharging hole communicated with the containing slot is formed on the sleeve seat. The artery puncture needle has the advantages of simple structure, convenience in operation, high success rate of puncture, accuracy in pressure measurement, convenience in blood collection and the like and can prevent blood from spraying outwards.

Description

A kind of arterial puncture needle

Technical field

This utility model relates to a kind of arterial puncture needle.

Background technology

Need monitoring blood pressure in real time for critical surgical patient or Intensive Care Therapy patient, adopt invasive monitoring of blood pressure usually, promptly adopt arterial puncture needle to insert tremulous pulse, be connected with the tremulous pulse pressure tester again.Traditional arterial puncture needle generally comprises casing seat, the remaining needle trocar sheath that is arranged at the casing seat front end that the rear end is provided with pressure measuring tie-in, is sheathed in the remaining needle trocar sheath and draw point that front end stretches out and the draw point seat that is connected with draw point.Because arteriotony is higher, the arterial puncture needle of said structure occurs blood easily and sprays from pressure measuring tie-in when puncture procedure, pollutes operating area; Possibly cause the propagation of iatrogenic disease; To the problems referred to above, existing at present kinds of schemes is that 200820022391.7 Y type band seal wire resistant to blood sprays the arterypuncture trocar outward like the patent No.; It has prevented the problem of the outer spray of blood, but because its y-type structure can influence the accuracy of pressure measurement numerical value.

The utility model content

The purpose of this utility model is the deficiency to prior art, but provides that a kind of resistant to blood simple in structure, easy to operate sprays outward, pressure measurement arterial puncture needle accurately.

The purpose of this utility model realizes through following technical scheme:

A kind of arterial puncture needle; It is characterized in that: comprise that the rear end is provided with the light transmission casing seat of tubulose pressure measuring tie-in, is relatively arranged on remaining needle trocar sheath, the draw point seat of casing seat front end and is arranged at the draw point on the draw point seat with pressure measuring tie-in; Be formed with the storage tank that is communicated with remaining needle trocar sheath and side pressure joint respectively in the casing seat; Movable being equipped with can be operated in the elasticity obstruction piece that slides between puncture position and the pressure measurement position in the storage tank, blocks the measuring pressure passage that piece is formed with lateral direction penetrating, is formed with the row's blood hole that is connected with storage tank on the casing seat; When blocking piece at puncture position; Block the blood back cavity that surrounds a sealing between piece and the storage tank, row's blood hole is connected with blood back cavity, blocks piece and blocks the side pressure joint; Draw point passes the side pressure joint successively and the obstruction piece then is sheathed in the remaining needle trocar sheath and front end stretches out the remaining needle trocar sheath, and the draw point sidewall offers the blood back mouth that is connected with blood back cavity; Slide into the pressure measurement position when extracting draw point and operating the obstruction piece, dock with remaining needle trocar sheath and side pressure joint at the measuring pressure passage two ends of blocking piece.

Further, said storage tank is for being opened on the lateral beloid dovetail groove of casing seat, and said obstruction piece is the trapezoid block suitable with storage tank; When blocking piece at puncture position; Block piece and do not block the remaining needle trocar sheath,, block piece complete filling blood back cavity when blocking piece in the pressure measurement position.

Further; This utility model also comprises the seal wire that is sheathed in the draw point; Before puncture blood back stage seal wire front end is positioned at the blood back mouth of draw point, send pin stage seal wire to be operated in guiding and stretch out one section from the draw point front end, the draw point seat is provided with the seal wire sheath; The seal wire tail end is provided with a control crank, and the seal wire sheath is formed with the slot to make way that extends along its length direction.

Further, be in the pressure measurement position when blocking piece, row's blood hole part at least realizes blocking piece measuring pressure passage, to take a blood sample from the hole puncture of row's blood with measuring pressure passage relatively.

Further, said obstruction piece is an elastic block rubber.

Further, said casing seat is provided with the tubulose row blood joint around row's blood hole.

Further, this utility model also comprises the chock tube on can the row's of being socketed in blood joint, is provided with the Obstruct membrane that can keep off the blood ventilation in the chock tube, the openable lid in chock tube outside.

Further; This utility model also comprises the negative pressure syringe of front end on can the row's of being socketed in blood joint; The negative pressure syringe is made up of cylindrical shell and the piston push rod that is movably set in the cylindrical shell, and barrel front end is provided with the adapter on can the row's of being socketed in blood joint, and the cylindrical shell lateral wall is provided with the obstruction arm with internal communication; Block and be provided with the Obstruct membrane that can keep off the blood ventilation in the arm; Block arm and be provided with openable lid, cylindrical shell top is formed with the breach that extends along its length direction, and piston push rod is provided with can be along breach slip and the dop that may be stuck in the cylindrical shell upper edge.

Further, said row's blood joint outer peripheral face is formed with external screw thread, and said syringe front end is provided with around the said adapter and the screw socket that can match with the external screw thread of said row's blood joint.

Further; Said pressure measuring tie-in outer peripheral face is formed with and is used for the thread segment that docks with pressure tester; But said draw point seat front end is provided with the medicated cap body of buckle closure on pressure measuring tie-in, medicated cap body inwall be formed with along the draw point length direction extend and with the suitable guiding groove of thread segment.

Further, said draw point seat is provided with and extends upward, can cooperate to control the Handheld Division of puncture needle with row's blood joint.

The utlity model has following beneficial effect:

Be back in blood back cavity and the syringe at the blood back mouth of puncture blood back stage blood, can be convenient to observe the blood back situation and prolong observation window, can prevent blood ejection pollution operating area again through draw point; Good when observing blood back; Can insert seal wire through draw point, guiding remaining needle trocar sheath is sent into blood vessel, after extraction has the draw point of seal wire; Promote to block piece and prevent that to just blocking the remaining needle trocar sheath blood from continuing to reflux; Pressure measuring tie-in is connected with pressure tester, continues to promote to block piece then and make it be in the pressure measurement position, at this moment the remaining needle trocar sheath is communicated with pressure measuring tie-in through the measuring pressure passage that blocks piece; Because it is short that measuring pressure passage is beeline channel and length, therefore pressure measurement blood pressure exactly.The blood of blood back cavity can be clamp-oned chock tube or syringe from row's blood mouth in the operating process, can prevent that so blood from polluting operating area from row's blood mouth and pressure measuring tie-in ejection.

Storage tank is set to being opened on the lateral beloid dovetail groove of casing seat; Block piece and be set to the trapezoid block suitable, block piece like this and can easily realize blocking pressure measuring tie-in and the purpose that discharges the remaining needle trocar sheath at puncture position with storage tank, make block block structure simple, practice thrift cost of manufacture; When blocking piece in the pressure measurement position; Block piece complete filling blood back cavity, then help row's blood of blood back cavity, be arranged to be in the pressure measurement position when blocking piece; At least part is relative with measuring pressure passage in row's blood hole, thereby realizes adopting syringe to block piece measuring pressure passage, to take a blood sample from the hole puncture of row's blood.

The placement that seal wire can be used for guiding sleeve is set on the draw point seat, helps to improve puncture success rate, push the blood outlet that the seal wire that is sheathed in the draw point surpasses draw point, help to hinder hemostatic and reflux, the cleaning that the seal wire sheath can guarantee seal wire is set.When draw point withdraws from casing seat,, help preventing the injury of draw point to the medical worker because seal wire is operated from the draw point front end and stretched out one section.

Casing seat is provided with the tubulose row blood joint around row's blood hole, and this row's blood joint can connect chock tube to prevent that further blood from from the ejection of row's blood mouth, polluting operating area; Also can connect syringe in addition with convenient row's blood; Setting can connect the negative pressure syringe of row's blood joint, and this negative pressure syringe can carry out negative pressure and draw blood when patient's blood pressure is low, or when using the tremulous pulse through-transmission technique to carry out arterypuncture; Continuous negative pressure suction during the drill drift pipe is to improve puncture success rate.

The pressure measuring tie-in outer peripheral face forms thread segment, and this thread segment can be realized and the docking of pressure tester, and can cooperate the accurate assembling that realizes draw point with the guiding groove of draw point seat medicated cap body again, makes accurate the connection with blood back cavity of blood back mouth and the piece obstruction that do not get clogged of draw point.

Description of drawings

Below in conjunction with accompanying drawing this utility model is done further detailed explanation.

Fig. 1 is the cutaway view of this utility model, puncture blood back state.

Fig. 2 is the cutaway view of this utility model, the guiding puncture state.

Fig. 3 is the cutaway view of this utility model, can connect the state of pressure tester.

Fig. 4 is the cutaway view of this utility model, the pressure measurement state.

Fig. 5 is the vertical view of this utility model, the pressure measurement state.

Fig. 6 be among Fig. 4 B-B to cutaway view.

Fig. 7 is the side view of this utility model, the puncture state.

The structural representation of the negative pressure syringe that Fig. 8 provides for this utility model.

The specific embodiment

Referring to figs. 1 through shown in Figure 7; A kind of arterial puncture needle, comprise the rear end be provided with the light transmission casing seat 1 of tubulose pressure measuring tie-in 12, with pressure measuring tie-in 12 be relatively arranged on casing seat 1 front end remaining needle trocar sheath 5, draw point seat 2, be arranged at the draw point 4 of draw point seat 2 front ends and be sheathed on the seal wire 6 in the draw point.

Be formed with the storage tank 11 that is communicated with remaining needle trocar sheath 5 and side pressure joint 12 respectively in the casing seat 1; Storage tank 11 is for being opened on casing seat 1 lateral beloid dovetail groove; In the storage tank 11 movable be equipped with to be operated in slide between puncture position and the pressure measurement position and block pieces 3 with the suitable gum elastics of storage tank 11 sizes; Block the linear type measuring pressure passage 31 that piece 3 is formed with lateral direction penetrating, be formed with row's blood hole 14 of being connected with storage tank 11 on the casing seat 1 and around row's blood joint 13 in row's blood hole 14.

When blocking piece 3 at puncture position, block the blood back cavity A that surrounds a sealing between piece 3 and the storage tank 11, row's blood hole 14 is connected with blood back cavity A; Blocking piece 3 blocks side pressure joint 12 and does not block remaining needle trocar sheath 5; Draw point 4 passes side pressure joint 12 successively and obstruction piece 3 then is sheathed in the remaining needle trocar sheath 5 and front end stretches out remaining needle trocar sheath 5, and draw point 4 sidewalls offer the blood back mouth 41 that is connected with blood back cavity A, in the puncture blood back stage; Seal wire 6 front ends are positioned at before the blood back mouth 41 of draw point 4; Send the pin stage observing the guiding of blood back after good, seal wire 6 is stretched out one section by operation from draw point 4 front ends, and draw point seat 2 is provided with seal wire sheath 22; Seal wire 6 tail ends are provided with a control crank 61, and seal wire sheath 22 is formed with the slot to make way 221 that extends along its length direction.

In the operation of puncture needle, draw point seat 1 is provided with and extends upward, can cooperate the Handheld Division 23 to control puncture needle with row's blood joint for ease; For ease in the assembling quick and precisely of puncture needle and with being connected of pressure tester; Pressure measuring tie-in 12 outer peripheral faces are formed with and are used for the thread segment 121 that docks with pressure tester; But draw point seat 2 front ends are provided with the medicated cap body 21 of buckle closure on pressure measuring tie-in 12, medicated cap body 21 inwalls be formed with along draw point 4 length directions extend and with the suitable guiding groove 211 of thread segment 121.

In order to prevent blood 14 ejections from row blood hole, this utility model also is provided with the chock tube 8 on can the row of being socketed in blood joint 13, is provided with the Obstruct membrane that can keep off the blood ventilation in the chock tube 8, openable lid outside the chock tube.Chock tube 8 is a known prior art, and its detailed structure here no longer specifies.

In order to adapt to the lower patient of blood pressure, or when using the tremulous pulse through-transmission technique to carry out arterypuncture.This utility model also is provided with the negative pressure syringe of front end on can the row's of being socketed in blood joint 13; Syringe is made up of cylindrical shell 91 and the piston push rod 92 that is movably set with in the cylindrical shell 91; Cylindrical shell 91 front ends are provided with the adapter 94 on can the row's of being socketed in blood joint 13, and cylindrical shell 91 lateral walls are provided with the obstruction arm 93 with internal communication, and the structure of blocking arm 93 is identical with chock tube 8; Chock tube 93 is provided with openable lid 7; Lid 7 is connected with casing seat 1 through connecting rope, and cylindrical shell 91 tops are formed with the breach 911 that extends along its length direction, and piston push rod 92 is provided with can be along breach 911 slips and the dop 921 that may be stuck in cylindrical shell 91 upper edges; Row's blood joint 13 outer peripheral faces are formed with external screw thread, and the syringe front end is provided with around taking over 94 and the screw socket 95 that can match with the external screw thread of row's blood joint 13.The concrete operations mode is: be fixedly connected with row's blood joint 13 through the adapter 94 of screw socket 95 with the negative pressure syringe, operated piston push rod 92 moves up and makes cylindrical shell 91 leading portions form negative pressure chamber, at this moment; This negative pressure chamber is communicated with chock tube 93; Then adopt lid 7 with chock tube 93 sealings, last operation piston push rod 92 moves up and rotates and makes dop 921 be stuck in the upper edge of cylindrical shell 91, makes negative pressure chamber form negative pressure; Thereby auxiliary hypotensive's puncture blood back; Or when using the tremulous pulse through-transmission technique to carry out arterypuncture, continuous negative pressure suction during the drill drift pipe is to improve puncture success rate.

In the clinical practice operation, Allen ' s negative patient is selected in conventional Allen ' s experiment; Carry out radial artery puncturing, follow sterile working's principle, clear-headed patient selection local anaesthesia; Puncture needle is in puncture blood back state shown in Figure 1: when blocking piece 3 at puncture position, block the blood back cavity A that surrounds a sealing between piece 3 and the storage tank 11, row's blood hole 14 is connected with blood back cavity A; Blocking piece 3 blocks side pressure joint 12 and does not block remaining needle trocar sheath 5; Draw point 4 passes side pressure joint 12 successively and obstruction piece 3 then is sheathed in the remaining needle trocar sheath 5 and front end stretches out remaining needle trocar sheath 5, and draw point 4 sidewalls offer the blood back mouth 41 that is connected with blood back cavity A, in the puncture blood back stage; Seal wire 6 front ends are positioned at before the blood back mouth 41 of draw point 4, and chock tube 93 is connected with row's blood joint 13.For the hypotensive; The adapter 94 that will have chock tube 93 negative pressure syringes is connected with row's blood joint 13, and operated piston push rod 92 moves up and makes cylindrical shell 91 leading portions form negative pressure chamber, at this moment; This negative pressure chamber is communicated with chock tube 93; Then adopt lid 7 with chock tube 93 sealings, last operation piston push rod 92 moves up and rotates and makes dop 921 be stuck in the upper edge of cylindrical shell 91, makes negative pressure chamber form negative pressure.

During puncture, right hand thumb, forefinger be the Handheld Division 23 of the row's of holding blood joint 13 and puncture needle respectively, and puncture needle and skin are 15-30 °; The radial artery that aligning is beaten slowly moves under water and carries out, and when one has blood to gush out, proves and punctures successfully; Immediately remaining needle trocar sheath 5 is lowerd; Be 10 ° with skin, again it pushed ahead 2mm, make the whole intravasation intracavity of remaining needle trocar sheath 5 mouths of pipe or reach the offside blood vessel wall.At this moment, if still see blood back, can seal wire 6 be sent into the puncture draw point and stretch out one section from draw point 4 front ends; Puncture needle is in guiding puncture state as shown in Figure 2, inserts and has some setbacks if lose blood back or seal wire 6, can withdraw from seal wire 6; Puncture needle is in puncture blood back state shown in Figure 1, can make the negative pressure syringe be in negative pressure state in case of necessity, and slow rollback remaining needle trocar sheath 5; Until blood back and send into seal wire 6 smoothly occurring, puncture needle is in guiding puncture state as shown in Figure 2.At last under the guiding of seal wire 6, remaining needle trocar sheath 5 is sent into blood vessel.

Stretch out at seal wire 6 under the state of one section of draw point 4 front end, extract the draw point that has seal wire 6.Promote to block piece 3 (2-4mm) and prevent that to just blocking remaining needle trocar sheath 5 blood from continuing to reflux; As shown in Figure 3; Pressure measuring tie-in 12 is connected with pressure tester again, continues to promote to block piece 3 then and make it be in the pressure measurement position, at this moment the remaining needle trocar sheath docks with remaining needle trocar sheath 5 and side pressure joint 12 through measuring pressure passage 31 two ends of blocking piece 3; Block piece 3 complete filling blood back cavity A, can carry out pressure measurement.The blood of blood back cavity can be clamp-oned chock tube 8 or syringe from row's blood 14 in the operating process, can prevent that so blood from polluting operating area from row's blood mouth 14 and pressure measuring tie-in ejection.At this moment, the measuring pressure passage 31 of obstruction piece 3 is provided with blood in a row hole 14 and at least partly punctures obstruction pieces 3 measuring pressure passage 31, to take a blood sample with measuring pressure passage 31 relative realizations from row's blood hole 14.When draw point 4 withdraws from casing seat 1,, help preventing 4 couples of medical workers' of draw point injury because seal wire 6 is stretched out one section by operation from draw point 4 front ends.

The above; Be merely the preferred embodiment of this utility model; So can not limit the scope that this utility model is implemented with this, the equivalence of promptly doing according to this utility model claim and description changes and modifies, and all should still belong in the scope that this utility model patent contains.

Claims

1. arterial puncture needle; It is characterized in that: comprise that the rear end is provided with the light transmission casing seat of tubulose pressure measuring tie-in, is relatively arranged on remaining needle trocar sheath, the draw point seat of casing seat front end and is arranged at the draw point on the draw point seat with pressure measuring tie-in; Be formed with the storage tank that is communicated with remaining needle trocar sheath and side pressure joint respectively in the casing seat; Movable being equipped with can be operated in the elasticity obstruction piece that slides between puncture position and the pressure measurement position in the storage tank, blocks the measuring pressure passage that piece is formed with lateral direction penetrating, is formed with the row's blood hole that is connected with storage tank on the casing seat; When blocking piece at puncture position; Block the blood back cavity that surrounds a sealing between piece and the storage tank, row's blood hole is connected with blood back cavity, blocks piece and blocks the side pressure joint; Draw point passes the side pressure joint successively and the obstruction piece then is sheathed in the remaining needle trocar sheath and front end stretches out the remaining needle trocar sheath, and the draw point sidewall offers the blood back mouth that is connected with blood back cavity; Slide into the pressure measurement position when extracting draw point and operating the obstruction piece, dock with remaining needle trocar sheath and side pressure joint at the measuring pressure passage two ends of blocking piece.

2. a kind of arterial puncture needle according to claim 1; It is characterized in that: said storage tank is for being opened on the lateral beloid dovetail groove of casing seat; Said obstruction piece is the trapezoid block suitable with storage tank, when blocking piece at puncture position, blocks piece and does not block the remaining needle trocar sheath; When blocking piece, block piece complete filling blood back cavity in the pressure measurement position.

3. a kind of arterial puncture needle according to claim 1; It is characterized in that: also comprise the seal wire that is sheathed in the draw point; Before puncture blood back stage seal wire front end is positioned at the blood back mouth of draw point, send pin stage seal wire to be operated in guiding and stretch out one section from the draw point front end, the draw point seat is provided with the seal wire sheath; The seal wire tail end is provided with a control crank, and the seal wire sheath is formed with the slot to make way that extends along its length direction.

4. according to claim 1 or 2 or 3 described a kind of arterial puncture needles, it is characterized in that: be in the pressure measurement position when blocking piece, row's blood hole part at least realizes blocking piece measuring pressure passage, to take a blood sample from the hole puncture of row's blood with measuring pressure passage relatively.

5. according to claim 1 or 2 or 3 described a kind of arterial puncture needles, it is characterized in that: said obstruction piece is an elastic block rubber.

6. according to claim 1 or 2 or 3 arbitrary described a kind of arterial puncture needles, it is characterized in that: said casing seat is provided with the tubulose row blood joint around row's blood hole.

7. a kind of arterial puncture needle according to claim 6 is characterized in that: also comprise the chock tube on can the row's of being socketed in blood joint, be provided with the Obstruct membrane that can keep off the blood ventilation in the chock tube, the openable lid in chock tube outside.

8. a kind of arterial puncture needle according to claim 6; It is characterized in that: also comprise the negative pressure syringe of front end on can the row's of being socketed in blood joint; The negative pressure syringe is made up of cylindrical shell and the piston push rod that is movably set in the cylindrical shell, and barrel front end is provided with the adapter on can the row's of being socketed in blood joint, and the cylindrical shell lateral wall is provided with the obstruction arm with internal communication; Block and be provided with the Obstruct membrane that can keep off the blood ventilation in the arm; Block arm and be provided with openable lid, cylindrical shell top is formed with the breach that extends along its length direction, and piston push rod is provided with can be along breach slip and the dop that may be stuck in the cylindrical shell upper edge.

9. a kind of arterial puncture needle according to claim 8 is characterized in that: said row's blood joint outer peripheral face is formed with external screw thread, and said syringe front end is provided with around the said adapter and the screw socket that can match with the external screw thread of said row's blood joint.

10. a kind of arterial puncture needle according to claim 6; It is characterized in that: said pressure measuring tie-in outer peripheral face is formed with and is used for the thread segment that docks with pressure tester; But said draw point seat front end is provided with the medicated cap body of buckle closure on pressure measuring tie-in, medicated cap body inwall be formed with along the draw point length direction extend and with the suitable guiding groove of thread segment.