CN218636053U - Deep vein puncture kit - Google Patents

Abstract

The utility model discloses a deep vein puncture external member, relating to the field of deep vein puncture of medical equipment, comprising a puncture needle, an injection needle cylinder, a liquid collecting pipe, a guide wire and a guide wire sheath pipe; the puncture needle comprises a needle head, a connecting hole and a side hole; the injection syringe comprises a cylinder body, a piston and an annular piston handle; the cylinder body is internally provided with a needle cylinder one-way valve, and the liquid collecting pipe is internally provided with a liquid collecting pipe one-way valve. One end of a guide wire in the guide wire sheath tube is inserted into the side hole, the piston is pulled to form negative pressure and simultaneously puncture the subcutaneous part of a patient to a vein, and the guide wire is placed into the vein of the patient from the puncture needle after blood return is smooth; once the guide wire is failed to be placed, the piston is pushed, venous blood in the injection syringe flows into the liquid collecting tube through the one-way valve of the liquid collecting tube, and the puncture needle is prevented from being pulled out to be repositioned and punctured.

Description

Deep vein puncture kit

Technical Field

The utility model relates to a medical equipment dark venipuncture field especially relates to a dark venipuncture external member.

Background

With the development of medical technology, deep venipuncture catheterization is increasingly widely applied to the fields of severe cases, emergency treatment, anesthesia, various branches, internal and external departments, and the like. The operation method has important functions of detecting central venous pressure, parenteral nutrition support, rapid fluid infusion, evaluating disease conditions and the like which are difficult to replace. The great veins such as subclavian vein, internal jugular vein, femoral vein and the like are usually selected for puncture catheterization, and the venipuncture catheterization is one of the means commonly used for intravenous infusion in clinic.

The deep venipuncture mainly comprises the following steps: 1. selecting proper puncture parts and needle insertion points 2, sterilizing a paving towel 3, local anesthesia 4, performing negative pressure needle insertion 5, pumping venous blood back to an injector 6, placing a guide wire 7, expanding the skin 8, placing a deep venous tube 9 and fixing the deep venous tube.

The deep vein puncture kit used clinically at present consists of an injector, a Y-shaped puncture needle, a guide wire and a deep vein catheter. And the injector in the deep venipuncture catheter kit commonly used at present is not the same as the ordinary injection syringe, and the capacity of the injector is usually only 5-10ml.

The technical requirement for medical staff is higher in the deep vein puncture catheterization, the operation is put into to the seal wire has the degree of difficulty, the operation person needs fixed pjncture needle of one hand, it is located the vein to keep the needle point, another handheld seal wire sheath pipe is put into the vein with the seal wire along the pjncture needle, at this in-process, receive the patient dysphoria, respiratory motion, vein blood vessel filling degree is poor, influence such as blood vessel diameter is slightly little, even experienced operator, also have the seal wire to put into the failure when also being difficult to avoid, lead to the puncture failure, lead to bleeding even, serious complications such as pneumothorax.

After a guidewire placement failure, the syringe is typically emptied of blood, at which time the needle must be withdrawn, repositioned, and punctured. In this case, the deep venous blood vessel and its surrounding soft tissues are susceptible to additional injury, and the condition of the blood vessel is affected, which in turn leads to increased difficulty in operation and, to some extent, also causes greater stress on the operator.

The operation difficulty of an operator is increased by simply replacing the large-capacity injector, when the capacity of the injector is increased, the distance between the tail end of the piston and the injection needle cylinder is increased in the using process, and the probability of instability and jitter of an operator is increased, so that the probability of guide wire implantation failure is higher; secondly, the size of the hand of the operator is required to be higher, and the device is not suitable for popularization and application.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model aims to provide a deep venipuncture suite.

The utility model aims at realizing through the following technical scheme: a deep vein puncture kit comprises an injection needle cylinder, a puncture needle and a liquid collecting pipe, wherein the injection needle cylinder comprises a cylinder body and a piston, the interior of the cylinder body is hollow, one end of the cylinder body is in splicing fit with the piston, the other end of the cylinder body is provided with a connecting end, and the puncture needle is detachably connected with the connecting end; a syringe one-way valve is arranged in the connecting end, and liquid can enter the injection syringe from the puncture needle through the syringe one-way valve and cannot flow reversely; the liquid collecting pipe is in a hollow tubular shape, one end of the liquid collecting pipe is provided with an exhaust hole, and the other end of the liquid collecting pipe is communicated with the lower surface of the injection needle cylinder; the liquid collecting pipe is internally provided with a liquid collecting pipe one-way valve, and liquid can enter the liquid collecting pipe from the injection needle cylinder through the liquid collecting pipe one-way valve and cannot flow reversely; in the using state, the horizontal height of the middle part of the liquid collecting pipe is lower than or equal to the horizontal height of one end of the liquid collecting pipe communicated with the syringe.

Through adopting above-mentioned technical scheme, because patient's cardiopalmus, respiratory motion, vein filling degree is poor and blood vessel diameter is little etc. influence, the needle point in the dark vein blood vessel is deviate from the vein during operation, when leading to the seal wire to put into the failure, through promoting the piston, vein blood in the syringe can't get into the pjncture needle through cylinder check valve and return to patient internal, but flows into in the liquid collecting pipe through liquid collecting pipe check valve for it has enough space surplus just can negative pressure puncture vein again in the syringe.

When the guide wire is failed to be placed, the space in the injection needle cylinder is not enough to support an operator to penetrate into the vein again under negative pressure and observe blood return, the situation that the operator only can pull out the puncture needle to reposition and puncture due to too low capacity of the injector in the common deep vein puncture catheter kit is avoided, and the deep vein vessel at the needle head of a patient and surrounding soft tissues are easily damaged additionally; thereby avoiding the operation difficulty from increasing due to the overlarge influence on the blood vessel condition, and further being beneficial to reducing the pressure of an operator.

The exhaust hole of the liquid collecting pipe can ensure that the air pressure in the liquid collecting pipe is kept the same as the external air pressure at the moment when the intravenous blood in the injection syringe is discharged, so that the intravenous blood in the injection syringe cannot flow into the liquid collecting pipe through the one-way valve of the liquid collecting pipe, and the exhaust hole is arranged at the highest position of the level of the liquid collecting pipe in the using state in order to avoid the liquid in the liquid collecting pipe from spilling.

Preferably, the liquid collection pipe is in the shape of a semi-annular hollow pipe.

By adopting the technical scheme, the liquid collecting pipe is smooth in shape, practical, convenient to use without edges and corners, and poor experience of scratches and the like in the using process is avoided.

Preferably, the included angle between the tangent of the semi-annular part of the liquid collecting tube at one end close to the puncture needle and the syringe cylinder is less than 90 degrees.

By adopting the technical scheme, the angle between the puncture needle and the needle inserting position is not vertical and can incline during puncture, so that the influence on the needle inserting angle caused by the shape of the liquid collecting pipe is avoided.

Preferably, at least one drain valve is arranged on the outer periphery of the liquid collecting pipe; the drain valve is positioned on the lower surface of the outer periphery of the liquid collecting pipe.

Through adopting above-mentioned technical scheme, be convenient for with the liquid evacuation that has been located liquid collecting tube, when liquid collecting tube liquid brings inconvenience for the operation in the use, can get rid of through the flowing back valve, if there is remaining liquid in the liquid collecting tube after the use, be convenient for classification.

Preferably, the barrel body and the liquid collection tube of the injection syringe are transparent or semitransparent.

By adopting the technical scheme, the information of whether the puncture needle punctures the vein, whether the blood return condition is good and the like can be clearly judged according to the blood return condition in the transparent or semitransparent syringe, so that the next operation is determined; whether the liquid is discharged from the injection needle cylinder into the liquid collecting pipe and whether the liquid in the liquid collecting pipe is emptied through the liquid discharging hole can be judged through the transparent or semitransparent liquid collecting pipe.

Preferably, the deep vein puncture kit further comprises a guide wire, a guide wire sheath; the hollow end of the guide wire sheath tube is provided with an opening, the closed end of the guide wire sheath tube is positioned in the liquid collecting tube, the open end of the guide wire sheath tube is positioned outside the liquid collecting tube, and the end of the guide wire, which is far away from the puncture needle, is in inserted fit with the guide wire sheath tube; the puncture needle comprises a needle head, a connecting hole and a side hole; the connecting hole is in plug-in fit with the connecting end of the injection needle cylinder, and a sealing block is arranged in the side hole; one end of the guide wire penetrates through the sealing block and enters the puncture needle from the side hole.

By adopting the technical scheme, one end of the guide wire can be inserted into the puncture needle head through the side hole during use, the control piston forms negative pressure in the injection needle cylinder and simultaneously inserts the puncture needle into the body of a patient to puncture to a vein, venous blood enters the cylinder body of the injection needle cylinder through the needle cylinder one-way valve, and the guide wire is placed into the blood vessel of the patient along the puncture needle after observation of smooth blood return. The guide wire sheath tube is convenient for provide the position of storing the guide wire in advance, prevents the guide wire from bending, and is convenient to use in a set.

In the venipuncture process, the one-way valve, the sealing plug and the piston of the liquid collecting pipe jointly ensure negative pressure needle insertion.

Preferably, one end of the piston, which is far away from the puncture needle, is provided with a piston handle; the piston handle is annular in shape.

By adopting the technical scheme, under general conditions, when the operation of inserting the guide wire by deep venipuncture can be smoothly completed, an operator does not need to hold the injection syringe permanently, but if the operation process of inserting the guide wire by deep venipuncture is not smooth, or when the vein with smaller diameter is punctured under ultrasonic guidance, the operator needs to keep the negative pressure state in the syringe continuously before the needle point punctures the deep vein. At this time, the flexibility of the fingers holding the needle by the operator may be greatly influenced, the fine degree of operation is easily reduced, and further the puncture failure is caused; this problem is effectively avoided by the piston shank being annular in shape.

Preferably, the deep vein puncture kit further comprises an upper bracket; the upper bracket is connected with the upper surface of the injection syringe, and the thickness of one side of the upper bracket, which is close to the puncture needle, is smaller than the thickness of the middle part of the upper bracket.

Through adopting above-mentioned technical scheme, the seal wire middle part is inconsistent with the upper bracket, inside the one end of seal wire passed through the side opening and inserted the puncture syringe needle, during the use a finger control piston formed the negative pressure inside the injection cylinder, simultaneously with the puncture needle enter into patient's health interior puncture to the vein, venous blood gets into the barrel of injection cylinder through cylinder check valve, observe back blood smooth and easy back, will with the inconsistent seal wire of upper bracket along the puncture needle with a finger and put into patient's blood vessel, this operation can be accomplished to the one hand.

Preferably, the deep vein puncture kit further comprises a lower bracket; the lower bracket is connected with the lower surface of the injection needle cylinder, and the lower bracket is in a gun stock shape.

By adopting the technical scheme, the space between the upper bracket and the lower bracket is convenient for the piston to move along the length direction of the injection syringe; the space between lower bracket, liquid collecting pipe except the finger of control seal wire and control piston, all the other fingers are detained in lower bracket department, are convenient for increase the stability of deep venipuncture external member. When the deep venipuncture external member is used, the forefinger can control the piston to move along the length direction of the injection needle cylinder, the thumb controls the guide wire to be placed in, and other fingers support the lower bracket, so that the deep venipuncture external member is suitable for single-hand operation.

More preferably, the distance between the two ends of the lower bracket and the upper bracket in the vertical direction is smaller than the distance between the middle of the lower bracket and the middle of the upper bracket in the vertical direction.

Through adopting above-mentioned technical scheme, avoid the middle and upper bracket of forefinger control piston removal, lower bracket to produce the interference to the forefinger, hinder the fine pulling piston of forefinger, influence the accuracy nature of operation.

Preferably, the end of the liquid collection tube far away from the puncture needle is connected with the upper bracket and/or the lower bracket.

Through adopting above-mentioned technical scheme, be fixed knot around the dark venipuncture external member and construct, the structure is very stable, avoids interfering with the operation.

To sum up, compare with prior art, the utility model discloses following beneficial effect has:

(1) The puncture needle is provided with a puncture needle, an injection needle cylinder, a guide wire and a liquid collecting pipe, wherein the injection needle cylinder comprises a cylinder body and a piston, and the puncture needle comprises a connecting hole, a side hole and a needle head; the cylinder body is provided with a syringe one-way valve, the liquid collecting pipe is provided with a liquid collecting pipe one-way valve at the position where the liquid collecting pipe is communicated with the cylinder body of the injection syringe, and one end of the liquid collecting pipe is provided with an exhaust hole; when the guide wire is failed to be placed in the needle, the forefinger can be used for pushing the piston, venous blood sucked into the injection needle cylinder in the previous operation cannot enter the puncture needle to return to the body of a patient through the needle cylinder one-way valve, but flows into the liquid collecting tube through the liquid collecting tube one-way valve, and the vein can be punctured by negative pressure again when enough space allowance exists in the injection needle cylinder, so that the situation that the puncture needle is pulled out to be repositioned and punctured is avoided, and the deep venous blood vessel at the needle head of the patient and surrounding soft tissues are easily damaged additionally.

(2) By arranging the bracket, the shape of the bracket conforms to the mechanical characteristics of a hand in a rest position; insert the puncture syringe needle inside through the side opening with the one end of seal wire, the middle part and the last bracket of seal wire are inconsistent, the control piston forms the negative pressure in syringe cylinder inside simultaneously with the pjncture needle advances the needle and punctures to the vein in getting into patient's the health, venous blood gets into the barrel of syringe cylinder through syringe one-way valve, observe the smooth and easy back of blood return, will follow the pjncture needle with the seal wire that the last bracket is inconsistent and put into patient's blood vessel through the thumb, all the other fingers are detained in lower bracket department, be convenient for increase the stability of deep venipuncture external member, this operation can be accomplished to the one hand, avoid the complicated operation of both hands cooperation to make mistakes easily, on the other hand also can be ready to deal with the emergency that other probably appear, or adjust important operations such as ultrasonic probe position.

(3) An annular piston handle is arranged at one end of the piston far away from the puncture needle; the holding structure accords with human mechanics, can slow down the influence of continuous operation on fingers, is beneficial to improving the comfort of an operator, keeps the flexibility of the fingers of the operator and improves the success rate of guide wire insertion;

(4) Through setting up inside cavity one end open-ended seal wire sheath pipe, its blind end is located inside the liquid collecting pipe, and its open end is located the liquid collecting pipe outside, provides the seal wire and prestores the position, prevents that the seal wire from crooked, conveniently uses in one set.

Drawings

Fig. 1 is a schematic structural view of a deep vein puncture kit according to embodiment 1 of the present invention;

fig. 2 is a schematic sectional view of a deep venipuncture kit according to embodiment 1 of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic structural view of a deep venipuncture kit according to embodiment 2 of the present invention;

fig. 5 is a schematic cross-sectional view of a deep venipuncture kit according to embodiment 2 of the present invention;

FIG. 6 is an enlarged view of portion B of FIG. 5;

reference numerals: 1. puncturing needle; 11. a needle head; 12. connecting holes; 13. a side hole; 2. an injection syringe; 21. a barrel; 22. a piston; 221. a piston handle; 23. a connecting end; 231. a needle cylinder one-way valve; 3. a guide wire; 31. a guide wire sheath; 41. an upper bracket; 42. a lower bracket; 5. a liquid collection tube; 51. an exhaust hole; 52. a liquid collecting pipe one-way valve; 53. and a drain valve.

Detailed Description

The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. In the following description, for the sake of clarity, the structure and operation of the present invention will be described with the aid of directional terms, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be understood as words of convenience and not as words of limitation. As used herein, the terms "distal" and "proximal" in the context of "distal", "proximal", and "proximal" refer to positions relative to the operator of the needle assembly that are "proximal" toward the operator and "distal" away from the operator.

It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each range and the individual values, and between the individual values may be combined with each other to give one or more new ranges of values, which ranges of values are to be considered as specifically disclosed herein, the invention is described in detail below with reference to specific examples:

example 1

As shown in fig. 1, the deep vein puncture kit comprises a puncture needle 1, an injection syringe 2, a liquid collection tube 5, a guide wire 3, a guide wire sheath tube 31, a barrel 21 of the injection syringe 2 and the liquid collection tube 5 which are made of transparent materials.

The injection syringe 2 comprises a cylinder body 21 and a piston 22, the cylinder body 21 is hollow, one end of the cylinder body 21 is in inserted fit with the piston 22, the other end of the cylinder body 21 is provided with a connecting end 23, the puncture needle 1 comprises a needle head 11, a connecting hole 12 and a side hole 13, and a sealing plug (not shown in the figure) is arranged in the side hole 13; the puncture needle 1 is detachably connected with the connecting end 23 in an inserting way.

One end of the semi-annular hollow tubular liquid collecting pipe 5 is provided with an air vent 51, and the other end of the liquid collecting pipe 5 is communicated with the lower surface of the injection needle cylinder 2; in the use state, the middle of the liquid collection tube 5 is lower than the other end of the liquid collection tube 5, which is communicated with the syringe 2, i.e. the liquid collection tube 5 is a semi-annular lower half part. And in order to avoid influencing the needle inserting angle due to the shape of the liquid collecting tube 5, the included angle between the tangent of one end of the semi-annular part of the liquid collecting tube 5 close to the puncture needle 1 and the injection syringe 2 is less than 90 degrees. At least one drain valve 53 is disposed on the outer periphery of the liquid collecting pipe 5, and the form of the drain valve 53 may be a silica gel plug and a drain hole plug or other valve mechanism capable of controlling whether the liquid flows out of the liquid collecting pipe 5.

The liquid collecting pipe 5 can be in various shapes such as a semi-polygonal ring shape, a semi-circular ring shape, a semi-elliptical ring shape and the like, specifically, the liquid collecting pipe 5 in the embodiment is in a semi-elliptical ring shape hollow pipe shape, an included angle between a tangent line of one end, close to the puncture needle 1, of the semi-circular part of the liquid collecting pipe 5 and the injection needle cylinder 2 is 45 degrees, and for the purposes of simple structure and convenient operation, the liquid collecting pipe 5 in the embodiment is provided with a liquid discharge valve 53 in which a silicon plug and a liquid discharge hole are inserted and connected, wherein the silicon plug is located at the lowest horizontal position of the lower surface of the outer peripheral side of the liquid collecting pipe 5.

As shown in fig. 2 and 3, a syringe check valve 231 is provided in the connecting end 23 of the syringe 2, and the liquid can enter the syringe 2 from the puncture needle 1 through the syringe check valve 231; a liquid collection tube one-way valve 52 is arranged in the liquid collection tube 5, and liquid can enter the liquid collection tube 5 from the injection syringe 2 through the liquid collection tube one-way valve 52, so that the liquid in the liquid collection tube 5 is convenient to be emptied. The vent hole 51 of the liquid collection tube 5 can maintain the same air pressure inside the liquid collection tube 5 as the outside air pressure if it is necessary to discharge venous blood in the syringe 2.

The guide wire sheath 31 is hollow inside, so that a position where the guide wire 3 is stored in advance is provided, the guide wire sheath is convenient to use in a complete set, and the bending angle of the guide wire sheath 31 is not smaller than 60 degrees so as to prevent the guide wire 3 from being bent. One end of the guide wire 3, which is far away from the puncture needle 1, is in inserted fit with the guide wire sheath 31; one end of the guide wire 3 penetrates through the sealed block and enters the puncture needle 1 from the side hole 13.

When the blood return-preventing needle is used, one end of the guide wire 3 is firstly inserted into the puncture needle head 11 through the side hole 13, the side hole 13 is sealed by a sealing plug, the control piston 22 forms negative pressure in the injection needle cylinder 2 and simultaneously inserts the puncture needle 1 into the body of a patient to puncture the vein, venous blood enters the cylinder body 21 of the injection needle cylinder 2 through the needle cylinder one-way valve 231, and the guide wire 3 is placed into the blood vessel of the patient along the puncture needle 1 after the smooth blood return is observed through the transparent cylinder body 21.

In the process of placing the deep vein puncture guide wire 3, because of the influences of palpitation, respiratory movement, poor vein filling degree, small blood vessel diameter and the like of a patient, a needle point in the deep vein blood vessel is separated from the vein during operation, and the guide wire 3 is failed to be placed, the piston 22 is pushed, the vein blood in the injection needle cylinder 2 cannot enter the puncture needle 1 through the needle cylinder one-way valve 231 and returns to the body of the patient, but flows into the liquid collection pipe 5 through the liquid collection pipe one-way valve 52, the vein can be punctured by negative pressure again when enough space allowance exists in the injection needle cylinder 2, the puncture needle 1 is prevented from being pulled out for repositioning and puncturing, the deep vein blood vessel at the needle head 11 of the patient and surrounding soft tissues are easy to be damaged additionally, and the operation difficulty is prevented from being increased due to overlarge influence on blood vessel conditions.

Example 2

A deep vein puncture kit is different from the embodiment 1 in that one end of a piston 22 far away from a puncture needle 1 is provided with a piston handle 221; the piston shank 221 is annular in shape; the deep venipuncture kit further comprises an upper bracket 41 and a lower bracket 42.

As shown in FIG. 4, the upper holder 41 is attached to the upper surface of the syringe 2, and the thickness of the middle portion of the upper holder 41 is larger than the thickness of the upper holder 41 on the side closer to the puncture needle 1. The lower holder 42 is connected to the lower surface of the syringe 2, and the lower holder 42 is in the shape of a gun stock.

As shown in fig. 5 and 6, the guide wire sheath 31 has a hollow inside and an open end, and a closed end thereof is located inside the liquid collection tube 5, in this embodiment, the portion of the guide wire sheath 31 located inside the liquid collection tube 5 abuts against the inner peripheral side of the liquid collection tube 5, the open end of the guide wire sheath 31 is located outside the liquid collection tube 5, the portion of the guide wire sheath 31 located outside the liquid collection tube 5 abuts against the upper bracket 41, the open end of the guide wire sheath 31 abuts against the middle portion of the upper bracket 41, and the middle portion of the guide wire 3 abuts against the upper surface of the upper bracket 41.

The distance between the two ends of the lower bracket 42 and the upper bracket 41 in the vertical direction is smaller than the distance between the middle of the lower bracket 42 and the middle of the upper bracket 41 in the vertical direction. A moving space of the piston 22 is formed between the upper bracket 41 and the lower bracket 42, the moving space of the piston 22 is circular or elliptical or is in other shape with the width of two ends smaller than the width of the middle part, preferably, the moving space of the piston 22 is elliptical in the present embodiment, the major axis of the moving space is parallel to the opening direction of the syringe 2, the piston 22 moves along the length direction of the syringe 2 in the moving space of the piston 22, and the interference of the upper bracket 41 and the lower bracket 42 to the forefinger in the process that the forefinger controls the piston 22 to move along the length direction of the syringe 2 in the moving space of the piston 22 is avoided, which affects the operation accuracy.

One end of the liquid collecting pipe 5 far away from the puncture needle 1 is connected with the upper bracket 41 and the lower bracket 42, and the front part and the rear part of the deep venipuncture suite are all fixedly connected, so that the structure is very stable, and the operation is prevented from being interfered.

When the operation is carried out by one hand, the complicated operation matching error of two hands is avoided, and the other hand can meet the emergency at any time or adjust the position of the ultrasonic probe and other important operations such as the position of the ultrasonic probe and the like.

If the guide wire 3 is failed to be placed, the piston 22 can be pushed by the forefinger, venous blood in the injection syringe 2 flows into the liquid collecting pipe 5 through the one-way valve 52 of the liquid collecting pipe, and the vein can be punctured again under negative pressure when enough space allowance exists in the injection syringe 2, so that the one-hand operation can be achieved.

The shape of the bracket is in accordance with the mechanical characteristics of the hand at the rest position, and the annular piston handle 221 is combined, so that the structure for holding the hand in accordance with the human mechanics is met, the influence of lasting operation on fingers is relieved, the comfort level of an operator is improved, the flexibility of the fingers of the operator is kept, and the success rate of putting the guide wire 3 into the hand is improved.

The utility model discloses improved current puncture external member, the most critical step is accomplished with minimum action, shortens the time and the space of drawing back to see blood to seal wire 3 and put into as far as possible, can realize one-hand operation through dark venipuncture external member, and another hand prepares emergency operation or adjusts important operations such as ultrasonic probe position to reach the purpose that improves and put into success rate, reduction error rate.

The foregoing descriptions have been directed to embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (10)

1. The deep venipuncture kit is characterized by comprising an injection needle cylinder (2), a puncture needle (1) and a liquid collection tube (5), wherein the injection needle cylinder (2) comprises a cylinder body (21) and a piston (22), the interior of the cylinder body (21) is hollow, one end of the cylinder body (21) is in plug-in fit with the piston (22), the other end of the cylinder body (21) is provided with a connecting end (23), and the puncture needle (1) is detachably connected with the connecting end (23);

a syringe one-way valve (231) is arranged in the connecting end (23), and liquid can enter the injection syringe (2) from the puncture needle (1) through the syringe one-way valve (231);

the liquid collecting pipe (5) is in a hollow tubular shape, one end of the liquid collecting pipe (5) is provided with an exhaust hole (51), and the other end of the liquid collecting pipe is communicated with the lower surface of the injection syringe (2);

a liquid collecting pipe one-way valve (52) is arranged in the liquid collecting pipe (5), and liquid can enter the liquid collecting pipe (5) from the injection syringe (2) through the liquid collecting pipe one-way valve (52);

in the using state, the horizontal height of the middle part of the liquid collecting pipe (5) is lower than or equal to the horizontal height of one end of the liquid collecting pipe (5) communicated with the injection syringe (2).

2. A deep vein puncturing kit according to claim 1, wherein said liquid collection tube (5) is in the form of a semi-annular hollow tube.

3. A deep vein puncture kit according to claim 2, wherein the angle between the tangent of the semi-circular part of the liquid collection tube (5) near the end of the puncture needle (1) and the syringe barrel (2) is less than 90 °.

4. The deep vein puncture kit according to claim 1, wherein at least one drain valve (53) is opened on the outer peripheral side of the liquid collection tube (5); the drain valve (53) is positioned on the lower surface of the outer periphery of the liquid collecting pipe (5).

5. The deep vein puncture kit according to any one of claims 1 to 4, wherein the barrel (21) of the syringe (2) and the liquid collection tube (5) are transparent or translucent.

6. The deep vein puncture kit of claim 1, further comprising a guidewire (3), a guidewire sheath (31);

the hollow end of the guide wire sheath tube (31) is opened, the closed end of the guide wire sheath tube is positioned in the liquid collecting tube (5), the open end of the guide wire sheath tube is positioned outside the liquid collecting tube (5), and the end, far away from the puncture needle (1), of the guide wire (3) is in plug fit with the guide wire sheath tube (31);

the puncture needle (1) comprises a needle head (11), a connecting hole (12) and a side hole (13); the connecting hole (12) is in plug-in fit with a connecting end (23) of the injection syringe (2), and a sealing plug is arranged in the side hole (13); one end of the guide wire (3) passes through the sealing block and enters the puncture needle (1) from the side hole (13).

7. The deep vein puncture kit according to claim 1, wherein the end of the piston (22) away from the puncture needle (1) is provided with a piston handle (221); the piston shank (221) is annular in shape.

8. The deep vein puncturing kit according to claim 1, further comprising an upper bracket (41); the upper bracket (41) is connected with the upper surface of the injection syringe (2), and the thickness of one side of the upper bracket (41) close to the puncture needle (1) is smaller than that of the middle part of the upper bracket (41).

9. The deep vein puncturing kit of claim 8, further comprising a lower cradle (42); the lower bracket (42) is connected with the lower surface of the injection needle cylinder (2), and the lower bracket (42) is in a gun stock shape.

10. A deep vein puncture kit according to claim 9, wherein the end of the liquid collection tube (5) remote from the puncture needle (1) is connected to the upper bracket (41) and/or the lower bracket (42).

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