CN218651949U - Deep vein puncture kit based on human mechanics - Google Patents

Abstract

The utility model discloses a human mechanics deep venipuncture external member, relating to the field of medical equipment deep venipuncture, comprising a needle cylinder, an upper auxiliary bracket, a lower auxiliary bracket, a puncture needle, a guide wire and a guide wire sheath tube; the needle cylinder comprises a cylinder body, a piston and an annular piston handle; the puncture needle comprises a needle head, a connecting hole and a side hole; when the auxiliary bracket is used, one end of the guide wire in the guide wire sheath tube is inserted into the side hole, the forefinger buckles the annular piston handle to form negative pressure to puncture the subcutaneous part of a patient to the vein, the guide wire is rubbed into the vein of the patient from the puncture needle by the thumb after the smooth blood return is observed, the moving distance is about 10cm, if the guide wire is thin enough, the head end of the guide wire can be placed at a position 2-3cm away from the needle point in advance, the guide wire placing operation can be completed by fewer actions, and the other fingers support the lower auxiliary bracket; the utility model discloses stability is high, is fit for one-hand operation.

Description

Deep vein puncture kit based on human mechanics

Technical Field

The utility model relates to a medical equipment dark venipuncture field especially relates to a deep venipuncture external member of human mechanics.

Background

With the development of medical technology, deep venipuncture catheterization is increasingly widely applied to the fields of emergency treatment, severe cases, anesthesia, surgery and the like in each branch, and patients with puncture difficulty caused by hardening and collapse of peripheral veins due to the need of long-term transfusion; patients who need parenteral nutrition of the whole vein; critical patients and patients with blood sampling difficulty are treated in emergency. The great veins such as subclavian vein, internal jugular vein, femoral vein and the like are usually selected for puncture catheterization.

The deep venipuncture mainly comprises the following steps: 1. placing the patient body position, and selecting a proper needle head position and a proper needle inserting point; 2. establishing a disinfection area, carrying out local disinfection according to a sterile operation program, and paving an operation towel; 3. local anesthesia is carried out; 4. negative pressure needle insertion deep venipuncture; 5. smooth blood return is observed; 6. fixing the puncture needle, placing the guide wire into the guide wire through the guide wire placing needle cylinder, and withdrawing the puncture needle; 7. placing a skin expanding needle along the guide wire; 8. placing a deep venous catheter along the guide wire; 9. and withdrawing the guide wire and fixing the deep venous tube.

The deep vein puncture kit used clinically at present comprises an injector, a Y-shaped puncture needle, a guide wire, a deep vein catheter, a suture, a skin suturing needle, a scalpel and the like. However, in deep venipuncture catheterization, the technical requirements on medical staff are high, and even operators with abundant experience inevitably have puncture failures, and the main reason is that the guide wire is difficult to insert in the operation process.

The key steps are as follows: 1. confirming that the needle tip is located within the vein and placing a guide wire. The factors are firmly related to the technical level and the manipulation of an operator, but the inventor thinks that the common defects of the puncture needle kits commonly used at present are that the puncture needle and the guide wire are far away from each other and the guide wire is positioned in an independent sheath tube structure according to the practical experience of the inventor, so that the operation of the operator is required by two hands, wherein the puncture needle is fixed by one hand, the needle point is kept in the vein, the guide wire is placed in the vein along the puncture needle by the other hand-held guide wire sheath tube, and in the process, the influences of dysphoria, respiratory movement, poor filling degree of the vein blood vessel, small diameter of the blood vessel and the like are caused, and the needle point in the deep vein blood vessel is easy to fall out of the vein during the operation, so that the guide wire placement fails, and even serious complications such as hemorrhage, pneumothorax and the like are caused. In the operation of reality, the doctor not only need carry out the seal wire and imbed the operation, probably still need adjust probe position or prepare the situation that probably appears at any time, lacks one among the prior art and can singlely carry out the seal wire and imbed the operation, and the deep venipuncture external member of human mechanics of auxiliary operations such as the emergent condition of other hand preparation processing or adjustment ultrasonic probe position.

SUMMERY OF THE UTILITY MODEL

For solving the defect among the prior art, the utility model aims to provide a deep venipuncture external member of human mechanics of auxiliary operations such as the one-hand operation of being convenient for, the emergent condition of another hand preparation processing or regulation ultrasonic probe position.

The utility model aims at realizing through the following technical scheme: a deep vein puncture kit based on human mechanics comprises a puncture needle, a needle cylinder, a guide wire and an auxiliary bracket; the needle cylinder comprises a cylinder body and a piston, the cylinder body is hollow, one end of the cylinder body is in plug fit with the piston, and the other end of the cylinder body is provided with a connecting end; the puncture needle comprises a needle head, a connecting hole and a side hole; the connecting hole is in inserting 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 sealed block and enters the puncture needle from the side hole; the auxiliary bracket comprises an upper auxiliary bracket, the upper auxiliary bracket is connected with the upper surface of the needle cylinder, and the thickness of one side of the upper auxiliary bracket, which is close to the puncture needle, is smaller than the thickness of the middle part of the upper auxiliary bracket; the middle part of the guide wire is abutted against the upper surface of the upper auxiliary bracket.

Through adopting above-mentioned technical scheme, at first, inside the airtight stopper in passing through the lateral opening with the one end of seal wire inserts the puncture syringe needle, the seal wire middle part is inconsistent with last auxiliary carrier, during the use with the pjncture needle advance the needle go into patient's health in and with a finger control piston in the inside negative pressure that forms of cylinder until puncture to vein, venous blood gets into the barrel of cylinder, observe the smooth and easy back of blood return, with a finger with the seal wire that last auxiliary carrier was inconsistent along the pjncture needle put into patient's blood vessel, above-mentioned operation singlehanded can be accomplished, another hand can prepare to handle emergency, also can be used for adjusting operations such as ultrasonic probe position, the simplified operation still is favorable to avoiding the easy cooperation error of the complicated operation of both hands.

Preferably, the auxiliary bracket further comprises a lower auxiliary bracket, the lower auxiliary bracket is connected with the lower surface of the needle cylinder, and the lower auxiliary bracket is in a gun stock shape.

Through adopting above-mentioned technical scheme, except the finger of control seal wire and control piston, other fingers are detained in auxiliary bracket department down, are convenient for increase the stability of the deep venipuncture external member of human mechanics.

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

Through adopting above-mentioned technical scheme, the index finger control piston is along the in-process of cylinder length direction motion in the piston removes the space, avoids last auxiliary carrier and lower auxiliary carrier to produce the interference to the index finger, influences the accuracy nature of operation.

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, if the operation of deep vein puncture and guide wire insertion is successfully completed, an operator does not need to hold the needle cylinder permanently, but if the operation process is not smooth or needs to puncture the vein with smaller diameter under the guidance of ultrasonic wave, the operator needs to keep the interior of the injector in a negative pressure state before the needle point punctures the deep vein. The annular piston handle is convenient for avoiding that the finger flexibility of holding the needle by an operator can be greatly influenced, so that the fine degree of operation is reduced and the puncture is failed. And the human body mechanics deep vein puncture suite of the utility model is more suitable for single-hand operation; the shape of auxiliary bracket accords with the mechanical characteristics of hand when the rest position, combines annular piston handle, accords with the structure of gripping of human mechanics, slows down the influence of lasting operation to the finger, helps keeping operation person's finger flexibility, improves operation person's comfort level, can effectively improve the seal wire and put into the success rate.

Preferably, the human mechanics deep venipuncture kit further comprises a liquid collecting tube, wherein the liquid collecting tube is in a semi-annular hollow tube shape, one end of the liquid collecting tube is communicated with one end, close to the puncture needle, of the cylinder body of the needle cylinder, and the other end of the liquid collecting tube is provided with an air pressure balancing hole; the connecting end of the cylinder body is provided with a first one-way valve, and liquid in the puncture needle can enter the cylinder body of the needle cylinder through the first one-way valve; a second one-way valve is arranged at the position where the liquid collecting pipe is communicated with the cylinder body of the needle cylinder, and liquid in the cylinder body can enter the liquid collecting pipe through the second one-way valve; a plurality of liquid discharge valves are arranged on the outer peripheral side 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, in the venipuncture in-process, the airtight block, second check valve, piston are convenient for guarantee that the negative pressure is advanced the needle, but if receive patient's dysphoria, venous blood vessel filling degree poor, respiratory motion, blood vessel diameter influence such as little in-process are put into to the seal wire, the condition that the needle point in the dark vein blood vessel deviates from the vein and leads to the seal wire to put into failure takes place during the operation. In order to avoid the problem that the deep vein blood vessel and the surrounding soft tissues of the needle head of a patient are easy to be additionally damaged, the operation difficulty is increased due to the overlarge influence on the condition of the blood vessel, the vein is punctured by negative pressure again under the condition that the puncture needle is not pulled out, the venous blood in the piston needle cylinder is pushed to flow into the liquid collecting pipe through the second one-way valve, the air pressure in the liquid collecting pipe is balanced by Kong Pingheng, the air pressure in the liquid collecting pipe is balanced with the external air pressure, and the needle cylinder can have enough space allowance; the phenomenon that due to the fact that the capacity of an injector in a common deep vein puncture catheter kit is too low, when the guide wire is unsuccessfully placed in the injector, the space in the injector is not enough to support an operator to puncture the vein again under negative pressure and observe blood return, only the puncture needle can be pulled out to reposition and puncture is avoided, and the pressure of the operator can be reduced. When the liquid in the liquid collecting pipe brings inconvenience to operation in the using process, the liquid in the liquid collecting pipe can be emptied through the liquid discharge valve, and if residual liquid exists in the liquid collecting pipe after use, classification treatment can also be carried out through the liquid discharge valve.

Preferably, a piston moving space is formed between the upper auxiliary bracket and the lower auxiliary bracket, the piston moves in the piston moving space along the length direction of the needle cylinder, and the shape of the piston moving space is circular or elliptical; and a bearing space is formed between the lower auxiliary bracket and the liquid collecting pipe.

By adopting the technical scheme, in specific use, the forefinger can control the piston to move in the piston moving space along the length direction of the needle cylinder, the thumb rubs the guide wire in along the direction of the puncture needle, and other fingers support the lower auxiliary bracket in the supporting space.

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

Through adopting above-mentioned technical scheme, in order to avoid receiving the interference as little as possible of dark venipuncture operation, whole fixed connection around the deep venipuncture external member of human mechanics, the structure is very stable.

Preferably, the human mechanical deep vein puncture kit further comprises a guide wire sheath; the inside cavity one end opening of seal wire sheath pipe, its blind end is located the collector tube inside, and its open end is located the collector tube outside, the one end and the seal wire sheath pipe grafting cooperation of pjncture needle are kept away from to the seal wire.

Through adopting above-mentioned technical scheme, the seal wire sheath pipe prevents that the seal wire from buckling, provides the position that a seal wire was stored in advance, sets up partial seal wire sheath pipe in the inside convenient complete set of use of liquid collecting pipe.

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

By adopting the above technical scheme, the angle between the puncture needle and the needle inserting part is not vertical during puncture, and the angle may be inclined, so that the shape of the liquid collecting pipe needs to be controlled in order to avoid influencing the needle inserting angle due to the shape of the liquid collecting pipe.

Preferably, the barrel body and the liquid collecting pipe of the 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 needle cylinder, and the next operation is further determined; whether the liquid is discharged from the syringe into the liquid collecting pipe or not and whether the liquid in the liquid collecting pipe is emptied through the liquid discharging hole or not can be judged through the transparent or semitransparent liquid collecting pipe.

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

(1) By arranging a puncture needle, a needle cylinder, an auxiliary bracket, a guide wire and an annular piston handle; the auxiliary bracket comprises an upper auxiliary bracket and a lower auxiliary bracket; the puncture needle comprises a needle head, a connecting hole and a side hole; one end of a guide wire is inserted into the puncture needle head through a side hole, the middle part of the guide wire is abutted against an upper auxiliary bracket, a forefinger buckles an annular piston handle, the piston is controlled to form negative pressure in the needle cylinder, meanwhile, a puncture needle is inserted into the body of a patient to puncture to a vein, venous blood enters the cylinder body of the needle cylinder, and after the smooth return of the blood is observed; the guide wire which is abutted against the upper auxiliary bracket is placed into the blood vessel of the patient along the puncture needle by the thumb, the other fingers are positioned in the bearing space and buckled at the lower auxiliary bracket, so that the stability of the human body mechanical deep vein puncture kit is increased conveniently, the operation can be finished by one hand, the other hand can be used for preparing for treating emergency situations and can also be used for adjusting the position of the ultrasonic probe and other operations, the operation is simplified, and the operation is favorable for avoiding the complex operation of both hands and easy matching error;

(2) Through arranging the liquid collecting pipe, a first one-way valve is arranged at the connecting end of the cylinder body, a second one-way valve is arranged at the position where the liquid collecting pipe is communicated with the cylinder body of the needle cylinder, and one end of the liquid collecting pipe is provided with an air pressure balancing hole; when the guide wire is failed to be placed, the forefinger pushes the piston, venous blood in the needle cylinder flows into the liquid collecting pipe through the second one-way valve, and the vein can be punctured by negative pressure again when enough space allowance exists in the needle cylinder, so that the situation that the puncture needle is pulled out for repositioning and puncturing is avoided, the deep venous blood vessel and the surrounding soft tissues of the needle head of a patient are easily damaged additionally, and the operation can be finished by one hand;

(3) The shape of the auxiliary bracket is in accordance with the mechanical characteristics of a hand at a rest position, and the annular piston handle is combined, so that the auxiliary bracket is in accordance with a holding structure of human body mechanics, 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 guide wire placement is improved;

drawings

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

FIG. 2 is a schematic structural view of the human mechanical deep vein puncture suite in another direction according to the embodiment of the present invention;

fig. 3 is a schematic structural view of a human mechanical deep vein puncture kit according to embodiment 2 of the present invention;

fig. 4 is a schematic sectional structure view of a human mechanical deep venipuncture kit according to embodiment 2 of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is an enlarged view of portion B of FIG. 4;

reference numerals: 1. puncturing needle; 11. a needle head; 12. connecting holes; 13. a side hole; 2. a needle cylinder; 21. a barrel; 22. A piston; 221. a piston handle; 23. a connecting end; 231. a first one-way valve; 3. a guide wire; 31. a guide wire sheath; 41. An upper auxiliary bracket; 42. a lower auxiliary bracket; 43. a piston moving space; 5. a liquid collecting pipe; 51. an air pressure balancing hole; 52. A second one-way valve; 53. supporting a space; 54. 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 and 2, a deep vein puncture kit based on human mechanics comprises a puncture needle 1, a syringe 2, a guide wire 3 and an auxiliary bracket, wherein the syringe 2 comprises a cylinder 21 and a piston 22, one end of the piston 22 away from the puncture needle 1 is provided with a piston handle 221, the piston handle 221 can be in various shapes such as an L shape, a T shape and an annular shape which are convenient to push and pull with an index finger, and the preferred embodiment is an annular shape.

The cylinder 21 is hollow, one end of the cylinder 21 is in plug fit with the piston 22, and the other end of the cylinder 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, wherein the connecting hole 12 is in plug-in fit with a connecting end 23 of the needle cylinder 2, a sealing block is arranged in the side hole 13, and one end of a guide wire 3 penetrates through the sealing block and enters the middle part of the guide wire 3 in the puncture needle 1 from the side hole 13 to be abutted against the upper surface of an upper auxiliary bracket 41.

The auxiliary bracket comprises an upper auxiliary bracket 41 and a lower auxiliary bracket 42, the upper auxiliary bracket 41 is connected with the upper surface of the needle cylinder 2, and the lower auxiliary bracket 42 is connected with the lower surface of the needle cylinder 2; the thickness of the upper auxiliary bracket 41 close to the puncture needle 1 is smaller than that of the middle part of the upper auxiliary bracket 41, the lower auxiliary bracket 42 is in a gun stock shape, and the distance between the two ends of the lower auxiliary bracket 42 and the upper auxiliary bracket 41 in the vertical direction is smaller than that between the middle part of the lower auxiliary bracket 42 and the upper auxiliary bracket 41 in the vertical direction.

A piston moving space 43 is formed between the upper auxiliary bracket 41 and the lower auxiliary bracket 42, the shape of the piston moving space 43 is circular or elliptical or other shapes with the width of two ends smaller than the width of the middle part, preferably, the shape of the piston moving space 43 is elliptical in the present embodiment, the long axis of the piston moving space is parallel to the opening direction of the needle cylinder 2, and the piston 22 moves in the piston moving space 43 along the length direction of the needle cylinder 2, so as to avoid interference of the index finger when the index finger controls the piston 22 to move in the piston moving space 43 along the length direction of the needle cylinder 2 by the upper auxiliary bracket 41 and the lower auxiliary bracket 42, and influence on the accuracy of the operation.

When the puncture needle is used, one end of the guide wire 3 is inserted into the puncture needle head 11 through the closed plug in the side hole 13, on the premise that the blood flow in the needle tip is not blocked, if the guide wire 3 is thin enough, the head end of the guide wire 3 can be placed at a position 2-3cm away from the needle tip in advance, the middle part of the guide wire 3 is abutted against the upper auxiliary bracket 41, one finger control piston 22 forms negative pressure in the needle cylinder 2 and simultaneously inserts the puncture needle 1 into the body of a patient to puncture to a vein, and other fingers are buckled at the lower auxiliary bracket 42 except the thumb controlling the guide wire 3 and the forefinger controlling the piston 22, so that the stability of a human mechanical deep vein puncture kit is improved; after venous blood enters the cylinder body 21 of the needle cylinder 2 and smooth return blood is observed, the thumb rubs the guide wire 3 which is abutted against the upper auxiliary bracket 41 into the blood vessel of the patient along the puncture needle 1; the operation can be completed by one hand, the complex operation of two hands is avoided, the error caused by matching is easy, and the other hand can also be prepared to process other possible emergency situations or perform important operations such as adjusting the position of the ultrasonic probe.

The annular piston handle 221 can effectively avoid the problem that an operator needs to keep the interior of the syringe in a negative pressure state before the needle point penetrates into a deep vein when the operation process is not smooth or a vein vessel with a smaller diameter is punctured under the guidance of ultrasonic. Avoid the finger flexibility of holding the needle of the operator to be greatly influenced, cause the fine degree of operation to be reduced and easily cause puncture failure.

The utility model discloses auxiliary bracket's the mechanical characteristics of the molding confession hand when having a rest the position combines annular piston handle 221, accords with human mechanics's the structure of gripping, slows down the influence of lasting operation to the finger, helps improving the art person comfort level, keeps the art person to point the flexibility, can effectively improve seal wire 3 and put into the success rate, and makes the utility model discloses the dark venipuncture external member of human mechanics is fit for one-hand operation more.

Example 2

As shown in fig. 3, a human mechanical deep vein puncture kit is different from that of embodiment 1 in that the human mechanical deep vein puncture kit further comprises a liquid collecting tube 5 and a guide wire sheath tube 31; the hollow one end opening in the inside of seal wire sheath 31, 3 one ends of seal wire are located seal wire sheath 31 insidely, provide the position that seal wire 3 prestores, prevent that seal wire 3 from buckling. As shown in fig. 4, the closed end of the guide wire sheath 31 is positioned inside the header 5, and as shown in fig. 6, the open end thereof is positioned outside the header 5, and in this embodiment, the portion of the guide wire sheath 31 positioned inside the header 5 abuts against the inner peripheral side of the header 5; the part of the guide wire sheath 31 outside the liquid collecting pipe 5 is abutted against the upper auxiliary bracket 41, the opening end of the guide wire sheath 31 is abutted against the middle part of the upper auxiliary bracket 41, and the end of the guide wire 3 far away from the puncture needle 1 is in inserted fit with the guide wire sheath 31.

The liquid collecting tube 5 is in a semi-annular hollow tubular shape, the lower auxiliary bracket 42 and the liquid collecting tube 5 form a bearing space 53 therebetween, one end of the liquid collecting tube 5 is communicated with one end, close to the puncture needle 1, of the cylinder body 21 of the needle cylinder 2, an included angle between a tangent line, close to one end of the puncture needle 1, of the semi-annular part of the liquid collecting tube 5 and the needle cylinder 2 is smaller than 90 degrees, the included angle between the tangent line, close to one end of the puncture needle 1, of the semi-annular part of the liquid collecting tube 5 and the needle cylinder 2 is preferably 45 degrees, the phenomenon that the shape of the liquid collecting tube 5 affects the needle feeding angle is avoided, and the air pressure balance hole 51 is formed in one end, far away from the puncture needle 1, of the liquid collecting tube 5. A plurality of flowing back valves 54 have been seted up to collector tube 5 periphery side, and the form of flowing back valve 54 can set up to the mode that silica gel stopper and outage were pegged graft or other can control whether liquid flows out from collector tube 5 in, and this embodiment sets up the flowing back valve 54 that 1 silica gel stopper and outage were pegged graft for simple structure's convenient operation.

As shown in fig. 5, the connecting end 23 of the cylinder 21 is provided with a first one-way valve 231, and the communicating part of the liquid collecting tube 5 and the cylinder 21 of the syringe 2 is provided with a second one-way valve 52; the liquid in the puncture needle 1 can enter the inside of the cylinder 21 of the cylinder 2 through the first check valve 231, and the liquid in the inside of the cylinder 21 can enter the inside of the liquid collecting tube 5 through the second check valve 52.

The air pressure balance hole 51 of the liquid collection tube 5 can keep the air pressure in the liquid collection tube 5 the same as the outside air pressure, so as to prevent the venous blood in the syringe 2 from flowing into the liquid collection tube 5 through the second one-way valve 52, and facilitate the discharge of the venous blood in the syringe 2. During the venipuncture process, the negative pressure needle insertion is conveniently ensured through the sealing plug, the second one-way valve 52 and the piston 22.

The barrel 21 and the liquid collecting tube 5 of the needle cylinder 2 are transparent or semitransparent, the barrel 21 and the liquid collecting tube 5 of the needle cylinder 2 in the embodiment are made of transparent materials, so that the information such as whether the puncture needle 1 punctures a vein and whether the blood return condition is good or not can be conveniently identified and judged, the next operation can be further determined, and whether the liquid is discharged into the liquid collecting tube 5 from the needle cylinder 2 or not and whether the liquid in the liquid collecting tube 5 is discharged through the liquid discharge hole or not can be judged through the transparent or semitransparent liquid collecting tube 5.

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

When the guide wire 3 is failed to be placed, the piston 22 is pushed by the forefinger, venous blood in the needle cylinder 2 flows into the liquid collecting pipe 5 through the second one-way valve 52, negative pressure puncture is performed again when enough space allowance exists in the needle cylinder 2, the situation that the puncture needle 1 is pulled out for repositioning and puncturing is avoided, extra damage to deep venous blood vessels and surrounding soft tissues of the needle head 11 of a patient is prone to occurring, the situation that the operation difficulty is increased due to the fact that blood vessel conditions are excessively influenced is avoided, the pressure of an operator is favorably reduced, and the operation can be completed by one hand. The utility model discloses improved current puncture external member, shorten as far as possible and draw back time and the space of seeing blood to seal wire 3 and putting into, can realize one-hand operation through the dark venipuncture external member of human mechanics to the most critical step is accomplished in minimum action, and another hand prepares emergency operation or adjusts important operations such as ultrasonic probe position, in order to reach the purpose that improves and put into the success rate.

The foregoing description of the specific embodiments of the invention has been presented. 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. A deep vein puncture kit based on human mechanics is characterized by comprising a puncture needle (1), a needle cylinder (2) and an auxiliary bracket;

the needle cylinder (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 plug fit with the piston (22), and 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); the connecting hole (12) is in plug fit with the connecting end (23) of the injection syringe (2), and a sealing plug is arranged in the side hole (13);

the auxiliary bracket comprises an upper auxiliary bracket (41), the upper auxiliary bracket (41) is connected with the upper surface of the needle cylinder (2), and the thickness of one side, close to the puncture needle (1), of the upper auxiliary bracket (41) is smaller than that of the middle part of the upper auxiliary bracket (41).

2. The kit according to claim 1, wherein said sub-carrier further comprises a lower sub-carrier (42), said lower sub-carrier (42) being connected to the lower surface of the syringe (2), said lower sub-carrier (42) being in the form of a butt.

3. The kit according to claim 2, wherein the distance between the two ends of the lower auxiliary bracket (42) and the upper auxiliary bracket (41) in the vertical direction is smaller than the distance between the middle of the lower auxiliary bracket (42) and the middle of the upper auxiliary bracket (41) in the vertical direction.

4. The human mechanical deep venipuncture kit of claim 1, wherein one 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.

5. The human mechanical deep venipuncture kit according to claim 1, further comprising a guide wire (3) and a liquid collecting tube (5), wherein the liquid collecting tube (5) is in a semi-annular hollow tubular shape, one end of the liquid collecting tube (5) is communicated with one end of the cylinder (21) of the needle cylinder (2) close to the puncture needle (1), and the other end of the liquid collecting tube (5) is provided with an air pressure balance hole (51);

one end of the guide wire (3) penetrates through the sealing block and enters the puncture needle (1) from the side hole (13); the middle part of the guide wire (3) is abutted against the upper surface of the upper auxiliary bracket (41);

the connecting end (23) of the cylinder body (21) is provided with a first one-way valve (231), and liquid in the puncture needle (1) can enter the cylinder body (21) of the needle cylinder (2) through the first one-way valve (231);

a second one-way valve (52) is arranged at the position where the liquid collecting pipe (5) is communicated with the cylinder body (21) of the needle cylinder (2), and liquid in the cylinder body (21) can enter the liquid collecting pipe (5) through the second one-way valve (52);

a plurality of drain valves (54) are arranged on the outer peripheral side of the liquid collecting pipe (5); the drain valve (54) is positioned on the lower surface of the outer periphery of the liquid collecting pipe (5).

6. The deep mechanical venipuncture kit of claim 5, wherein a moving space of the plunger (22) is formed between the upper auxiliary bracket (41) and the lower auxiliary bracket (42), the plunger (22) moves in the moving space of the plunger (22) along the length direction of the syringe (2), and the moving space of the plunger (22) is circular or oval; a bearing space (53) is formed between the lower auxiliary bracket (42) and the liquid collecting pipe (5).

7. The human mechanical deep venipuncture kit of claim 5, wherein an end of the liquid trap (5) away from the puncture needle (1) is connected to the upper auxiliary bracket (41) and/or the lower auxiliary bracket (42).

8. The ergonomic deep venipuncture kit of claim 5 further comprising a guidewire sheath (31);

the inside cavity one end opening of seal wire sheath pipe (31), its blind end are located collector tube (5) inside, and its open end is located collector tube (5) outside, the cooperation of pegging graft with seal wire sheath pipe (31) is kept away from the one end of pjncture needle (1) in seal wire (3).

9. The human mechanical deep vein puncture kit according to claim 5, wherein an included angle between a tangent line of the semicircular part of the liquid collecting tube (5) close to one end of the puncture needle (1) and the needle cylinder (2) is less than 90 degrees.

10. The human mechanical deep venipuncture kit of claim 5, wherein the barrel (21) and the liquid collecting tube (5) of the syringe (2) are transparent or translucent.

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