CN115137452A

CN115137452A - Human body mechanics integrated deep venipuncture kit and use method thereof

Info

Publication number: CN115137452A
Application number: CN202210351070.6A
Authority: CN
Inventors: 吴文博
Original assignee: Shanghai Jing'an Zhabei Central Hospital
Current assignee: Shanghai Jing'an Zhabei Central Hospital
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-10-04

Abstract

The invention discloses a human mechanics integrated deep venipuncture kit, which relates to the field of deep venipuncture of medical equipment and comprises a puncture needle head, a needle cylinder, an upper bracket, a lower bracket, a guide wire sheath tube and a liquid collecting tube; the needle cylinder comprises a cylinder body, a piston part and an annular piston handle; the puncture needle head comprises a puncture part, a connecting hole and a side hole; a first one-way valve is arranged in the barrel, and a second one-way valve is arranged in the liquid collecting pipe. When the negative pressure puncture needle 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 puncture from subcutaneous to vein of a patient, the thumb puts the guide wire into the negative pressure puncture needle after blood return is smooth, and the rest fingers support the lower bracket; once the guide wire is failed to be placed, the forefinger pushes the piston part, and venous blood in the needle cylinder flows into the liquid collecting pipe through the second one-way valve, so that the puncture needle head is prevented from being pulled out to be repositioned and punctured; the ultrasonic probe has high stability, is suitable for single-hand operation, and can be used for processing emergency situations or adjusting the position of the ultrasonic probe by the other hand.

Description

Human body mechanics integrated deep venipuncture kit and use method thereof

Technical Field

The invention relates to the field of deep venipuncture of medical equipment, in particular to a human mechanics integrated deep venipuncture kit and a using method thereof.

Background

With the development of medical technology, deep venipuncture catheterization is increasingly widely applied to the fields of emergency treatment, severe cases, anesthesia, various branches, internal and external departments, and the like. The operation has important functions of rapid fluid infusion, parenteral nutrition support, central venous pressure detection, disease condition assessment and the like which are difficult to replace. Venipuncture catheterization is one of the means commonly used in intravenous infusion in clinic. 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: firstly, placing the body position of a patient, and selecting a proper puncture part and a proper needle insertion point; then establishing a disinfection area, carrying out local disinfection according to a sterile operation program, and paving an operation towel; then local anesthesia is carried out; then the negative pressure is inserted into the deep vein puncture. When deep venipuncture is carried out, a disposable puncture needle is used for puncturing veins, blood return is observed, after the smooth blood return is confirmed, the puncture needle is fixed, a guide wire is held, the guide wire is placed into the guide wire through the guide wire needle cylinder, and the puncture needle is withdrawn; then, the skin expanding needle is placed along the guide wire, and the skin expanding needle is withdrawn after the puncture channel is widened; and then the deep venous catheter is placed along the guide wire, and finally the guide wire is withdrawn, and the deep venous catheter is fixed.

The deep vein puncture kit used clinically at present consists of an injector, a special puncture needle, a guide wire, a deep vein catheter, a suture, a skin suturing needle, a scalpel and the like. The Chinese utility model with publication number CN203647484U discloses a disposable central venous guide wire retrograde guiding tracheal intubation puncture bag. Including tray, disinfection brush, syringe needle, Y type pjncture needle and central venous catheter seal wire, this utility model puncture package is unanimous basically with present clinical use, and it is complete, low cost, the wide use of article in its package.

However, in deep venipuncture catheterization, the technical requirements on medical staff are high, even operators with abundant experience inevitably have puncture failures, and the main reasons are two aspects: firstly, the individual difference of the patient has a large influence on the positioning of the puncture point, and the factors can be effectively improved by the ultrasonic guidance and other technologies.

Secondly, the guide wire is difficult to put in the operation process, and the key steps are mainly two: confirming that the needle tip is located within the vein and placing a guidewire. The factors are firmly related to the technical level and the manipulation of an operator, but the inventor believes that the common defects of the puncture needle kit 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 practical experience, so that the operator is required to fix the puncture needle by one hand, keep the needle point positioned in a vein, and place the guide wire into the vein along the puncture needle by the other hand-held guide wire sheath tube.

In addition, the syringe in the deep venipuncture catheter set commonly used at present is not compatible with the common syringe, the syringe capacity is usually only 5-10ml, blood in the syringe is usually required to be emptied after the guide wire is failed to be inserted, and the puncture needle must be pulled out, repositioned and punctured. In this case, the deep vein vessel and its surrounding soft tissues are susceptible to additional injury, and the vessel condition is affected, which in turn results in increased difficulty of operation and, to some extent, greater stress on the operator.

Disclosure of Invention

In order to overcome the defects in the prior art, the inventor considers and improves the existing puncture suite, shortens the time and the space from the blood drawing back to the guide wire insertion as much as possible, and completes the most key steps with the minimum action so as to achieve the purpose of improving the insertion success rate.

The purpose of the invention is realized by the following technical scheme: a human mechanics integrated deep vein puncture kit comprises a puncture needle head, a needle cylinder and a guide wire which are arranged in sequence; the needle cylinder comprises a cylinder body and a piston part, the cylinder body is hollow, one end of the cylinder body is in plug fit with the piston part, and the other end of the cylinder body is provided with a connecting end;

the puncture needle head comprises a puncture part, a connecting hole and a side hole; the connecting hole is in plug-in fit with the connecting end of the 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 head from the side hole;

the human-body-mechanics integrated deep venipuncture kit also comprises an upper bracket and a liquid collecting pipe, wherein the upper bracket is connected with the upper surface of the needle cylinder, and the thickness of one side of the upper bracket, which is close to the puncture needle head, is smaller than the thickness of the middle part of the upper bracket; the middle part of the guide wire is abutted against the upper surface of the upper bracket;

the liquid collecting tube is in a semi-annular hollow tubular shape, one end of the liquid collecting tube is communicated with one end of the cylinder body of the needle cylinder, which is close to the puncture needle head, 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 head can enter the cylinder body of the needle cylinder through the first one-way valve;

and a second one-way valve is arranged at the communicated part of the liquid collecting tube and the cylinder body of the needle cylinder, and liquid in the cylinder body can enter the liquid collecting tube through the second one-way valve.

Through adopting above-mentioned technical scheme, it is inside to insert the needle of once wearing through the side opening with the one end of seal wire earlier, the seal wire middle part is inconsistent with last bracket, a finger control piston portion forms the negative pressure in the cylinder is inside simultaneously with puncture needle injection needle puncture to the vein in patient's the health during use, venous blood gets into the barrel of cylinder through first one-way valve, observe the smooth and easy back of blood return, with a finger with the seal wire that last bracket inconsistent along the pjncture needle put into patient's blood vessel, this operation can be accomplished to the one hand, avoid the easy cooperation error of the complicated operation of both hands, the other hand also can be ready and handle the emergency situation that other probably take place, or adjust important operations such as ultrasonic probe position.

Under normal conditions, the subsequent operation can be started after the guide wire is successfully placed, but in the guide wire placing process, the guide wire is affected by dysphoria of a patient, respiratory movement, poor filling degree of venous vessels, small diameter of the vessels and the like, and the needle points in the deep venous vessels are easy to drop out of the veins during operation, so that the guide wire placing fails; at the moment, by pushing the piston part, venous blood in the needle cylinder can not enter the puncture needle head to return to the body of a patient through the first one-way valve, but flows into the liquid collecting pipe through the second one-way valve, when enough space allowance exists in the needle cylinder, negative pressure puncture is carried out on the venous blood again, the situation that the capacity of the injector in a common deep vein puncture catheter kit is too low is avoided, once the guide wire is placed in failure, the space in the needle cylinder is not enough to support an operator to carry out negative pressure puncture on the venous blood again and observe blood return, only the puncture needle head can be pulled out to carry out repositioning and puncture, extra damage is easily caused to the deep vein blood vessel of the puncture part of the patient and surrounding soft tissues, the situation that the blood vessel condition is influenced too much to cause operation difficulty to be increased is avoided, and the pressure reduction of the operator is facilitated.

In the process of discharging venous blood in the needle cylinder, the air pressure balance hole of the liquid collecting pipe constantly keeps the air pressure in the liquid collecting pipe to be the same as the external air pressure, and the venous blood in the needle cylinder is prevented from flowing into the liquid collecting pipe through the second one-way valve. In the venipuncture process, the sealing plug, the second one-way valve and the piston part are convenient to ensure negative pressure needle insertion.

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

By adopting the technical scheme, the operation is smoothly finished under general conditions, an operator does not need to hold the needle cylinder permanently, but if the operation process is not smooth or the operator punctures the vein with smaller diameter under the guidance of ultrasonic wave, the operator needs to keep the negative pressure state in the injector continuously before the needle point punctures the deep vein. At the moment, the flexibility of the fingers of the operator holding the needle can be greatly influenced, so that the fine degree of operation is reduced, and the puncture failure is easily caused; the piston handle in the shape of the ring can effectively avoid the problem, and the body-mechanics integrated deep venipuncture kit is more suitable for single-hand operation.

Preferably, the human body mechanics integrated 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 puncture needle head are kept away from to the seal wire.

Through adopting above-mentioned technical scheme, provide the position that a seal wire was stored in advance, make things convenient for the suit to use, prevent that the seal wire from buckling.

Preferably, the human-mechanics integrated deep venipuncture kit further comprises a lower bracket, the lower bracket is connected with the lower surface of the needle cylinder, and the lower bracket is in a gun stock shape;

a piston moving space is formed between the upper bracket and the lower bracket, and the piston part moves in the piston moving space along the length direction of the needle cylinder; and a bearing space is formed between the lower bracket and the liquid collecting pipe.

Through adopting above-mentioned technical scheme, except the finger of control seal wire and control piston portion, all the other fingers are detained in lower bracket department, are convenient for increase the stability of the dark venipuncture external member of human mechanics integral type. When the device is used, the forefinger can control the piston part to move in the piston moving space along the length direction of the needle cylinder, the thumb controls the guide wire to be placed in, and other fingers support the lower bracket in the bearing space.

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; the piston moving space the shape is circular or elliptical.

Through adopting above-mentioned technical scheme, avoid upper bracket, lower bracket to produce the interference to the forefinger at the in-process that forefinger control piston portion moved along cylinder length direction in the piston removes the space, influence the accuracy nature of operation.

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

Through adopting above-mentioned technical scheme, whole fixed connection around the deep vein puncture external member of human mechanics integral type, the structure is very stable, avoids the operation to receive the interference.

Preferably, at least one drain valve is 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, be convenient for with the liquid evacuation that has been located the collecting channel, when liquid brings inconvenience for the operation in the collecting channel in the use, can get rid of through the flowing back valve, if there is remaining liquid in the collecting channel after finishing using, the classification of being convenient for is handled.

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 technical scheme, the angle between the puncture needle head and the puncture part is not vertical and is possibly inclined during puncture, so that the influence on the needle inserting angle caused by the shape of the liquid collecting pipe is avoided.

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 head 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 into the liquid collecting pipe from the syringe or not 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.

The invention also aims to provide a use method of the human-body-mechanics integrated deep venipuncture kit, which comprises the following steps:

s1, inserting one end of a guide wire into the puncture needle head through a side hole, wherein the middle part of the guide wire is abutted against an upper bracket;

s2, a finger controls a piston part to form negative pressure inside a needle cylinder, a puncture needle head is inserted into the body of a patient to puncture to a vein, and venous blood enters a cylinder body of the needle cylinder through a first one-way valve;

s3, after the smooth blood return is observed, the guide wire which is abutted against the upper bracket is placed into the blood vessel of the patient along the puncture needle by using another finger;

s4, if the needle tip of the puncture needle head is separated from the vein, the guide wire is failed to be placed, the piston part is pushed to enable the venous blood in the needle cylinder to flow into the liquid collecting pipe through the second one-way valve, and the operation of the steps S2 to S3 is retried after small adjustment under the condition that the puncture needle head is not pulled out.

In summary, compared with the prior art, the invention has the following beneficial effects:

(1) By arranging a puncture needle head, a needle cylinder, a bracket and a guide wire; the needle cylinder comprises a cylinder body and a piston part, and one end of the piston part, which is far away from the puncture needle head, is provided with an annular piston handle; the bracket comprises an upper bracket and a lower bracket; the puncture needle head comprises a puncture part, a connecting hole and a side hole; one end of a guide wire is inserted into a puncture needle head through a side hole, the middle part of the guide wire is abutted against an upper bracket, an annular piston handle is buckled by using an index finger, the piston part is controlled to form negative pressure in a needle cylinder, meanwhile, a puncture needle head is inserted into the body of a patient and punctured into a vein, venous blood enters a cylinder body of the needle cylinder through a first one-way valve, after smooth blood return is observed, the guide wire abutted against the upper bracket is placed into the blood vessel of the patient along the puncture needle through a thumb, the rest fingers are positioned in a bearing space and buckled at the lower bracket, the stability of a human body mechanics integrated deep vein puncture kit is convenient to increase, the operation can be completed by one hand, the problem that complex operation of two hands is easy to match error is avoided, the other hand can also be prepared to handle other possible emergency situations, or important operations such as the position adjustment of an ultrasonic probe and the like are performed;

(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; once the guide wire is failed to be placed, the forefinger pushes the piston part, venous blood in the needle cylinder cannot enter the puncture needle head to return to the body of a patient through the first one-way valve, but flows into the liquid collecting pipe through the second one-way valve, and the venous blood can be punctured by negative pressure again when enough space allowance exists in the needle cylinder, so that the situation that the puncture needle head is pulled out to be repositioned and punctured is avoided, the deep venous blood vessel and surrounding soft tissues of the punctured part of the patient are easily damaged additionally, and the operation can be finished by one hand;

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

(4) Through setting up inside cavity one end open-ended seal wire sheath pipe, its blind end is located the collector tube inside, and its open end is located the collector tube outside, provides the position that a seal wire was stored in advance, makes things convenient for the suit to use, prevents that the seal wire from buckling.

Drawings

FIG. 1 is a schematic structural diagram of an integrated human-mechanical deep venipuncture kit according to embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the human body mechanics integrated deep venipuncture suite in another direction in the embodiment 1 of the invention;

FIG. 3 is a cross-sectional schematic view of the integrated human mechanical deep venipuncture kit of FIG. 2;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is an enlarged view of portion B of FIG. 3;

FIG. 6 is an enlarged view of portion C of FIG. 3;

FIG. 7 is an enlarged view of portion D of FIG. 3;

reference numerals: 1. a puncture needle head; 11. a puncture section; 12. connecting holes; 13. a side hole; 2. a needle cylinder; 21. a cylinder body; 22. a piston portion; 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 bracket; 42. a lower 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 invention, but are not intended to limit the invention in any way. In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms. 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 of the ranges and the individual points, and between the individual points 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 human-body-mechanics integrated deep venipuncture kit comprises a puncture needle head 1, a syringe 2, a bracket, a liquid collecting tube 5, a guide wire 3 and a guide wire sheath tube 31; the bracket comprises an upper bracket 41 and a lower bracket 42.

The syringe 2 comprises a barrel 21 and a piston part 22, wherein one end of the piston part 22 far away from the puncture needle head 1 is provided with a piston handle 221, the piston handle 221 can be in various shapes such as L-shaped, T-shaped, annular and the like, and the preferred shape of the embodiment is annular; the cylinder 21 is hollow, one end of the cylinder 21 is in plug fit with the piston part 22, and the other end of the cylinder is provided with a connecting end 23; the puncture needle head 1 comprises a puncture part 11, a connecting hole 12 and a side hole 13, wherein the connecting hole 12 is in plug-in fit with the connecting end 23 of the needle cylinder 2, and a sealing block is arranged in the side hole 13.

Collector tube 5 is half annular cavity tubulose, the one end that the barrel 21 of one end of collector tube 5 and cylinder 2 is close to puncture needle 1 is linked together, the semi-annular part of collector tube 5 is close to the tangent line of 1 one end of puncture needle and the contained angle between 2 cylinders is less than 90, the preferred 45 of contained angle between tangent line that the semi-annular part of collector tube 5 is close to 1 one end of puncture needle and cylinder 2 in this embodiment, avoid influencing the angle of inserting the needle because of the shape of collector tube 5, the atmospheric pressure balance hole 51 has been seted up to the one end that the puncture needle 1 was kept away from to collector tube 5. A plurality of drain valves 54 are arranged on the outer peripheral side of the liquid collecting pipe 5, the drain valves 54 can be arranged in a manner of inserting a silica gel plug and a drain hole or other valve mechanisms capable of controlling whether liquid flows out of the liquid collecting pipe 5, the drain valves 54 inserted into 1 silica gel plug and the drain hole are arranged for simple and convenient operation of the structure, and the drain valves 54 are located at the lowest level of the lower surface on the outer peripheral side of the liquid collecting pipe 5.

As shown in fig. 3 and 4, 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 head 1 can enter the cylinder 21 of the syringe 2 through the first one-way valve 231, and the liquid in the cylinder 21 can enter the liquid collecting pipe 5 through the second one-way valve 52, so that the liquid in the liquid collecting pipe 5 can be emptied.

If venous blood in the needle cylinder 2 needs to be discharged, the air pressure balancing hole 51 of the liquid collecting tube 5 can keep the air pressure in the liquid collecting tube 5 the same as the external air pressure, and the venous blood in the needle cylinder 2 cannot flow into the liquid collecting tube 5 through the second one-way valve 52. During the venipuncture process, the sealing plug, the second one-way valve 52 and the piston part 22 are convenient to ensure negative pressure needle insertion.

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 liquid is discharged into the liquid collecting tube 5 from the needle cylinder 2 or not and whether 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.

The upper bracket 41 is connected with the upper surface of the needle cylinder 2, and the lower bracket 42 is connected with the lower surface of the needle cylinder 2; the thickness of one side of the upper bracket 41 close to the puncture needle head 1 is smaller than that of the middle part of the upper bracket 41, the lower bracket 42 is in a gun stock shape, and 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 part of the lower bracket 42 and the middle part of the upper bracket 41 in the vertical direction; a piston moving space 43 is formed between the upper bracket 41 and the lower 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, the piston part 22 moves in the piston moving space 43 along the length direction of the needle cylinder 2, 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 part 22 to move in the piston moving space 43 along the length direction of the needle cylinder 2 is avoided, so that the operation accuracy is not affected; form bearing space 53 between lower bracket 42, collector tube 5 keeps away from the one end of puncture syringe needle 1 and is connected with upper bracket 41 and/or lower bracket 42, whole fixed connection around the deep vein puncture external member of human mechanics integral type, and the structure is very stable, avoids the operation to receive the interference.

As shown in fig. 3, 4 and 5, the guide wire sheath 31 has a hollow interior and an open end, so as to provide a position for storing the guide wire 3 in advance, thereby facilitating the use of the whole set, preventing the guide wire 3 from being bent, and having a closed end located inside the liquid collecting pipe 5 and an open end located outside the liquid collecting pipe 5, as shown in fig. 4, in this embodiment, the part of the guide wire sheath 31 located inside the liquid collecting pipe 5 abuts against the inner peripheral side of the liquid collecting pipe 5; as shown in fig. 6, the part of the guide wire sheath 31 outside the liquid collecting tube 5 abuts against the upper bracket 41, the open end of the guide wire sheath 31 abuts against the middle part of the upper bracket 41, and the middle part of the guide wire 3 abuts against the upper surface of the upper bracket 41; one end of the guide wire 3 can penetrate through the sealing plug and enter the puncture needle head 1 from the side hole 13, and one end of the guide wire 3 far away from the puncture needle head 1 is in inserted fit with the guide wire sheath 31.

When the puncture needle is used, one end of the guide wire 3 is inserted into the puncture needle through the side hole 13, the sealed plug in the side hole 13 is sealed, the middle part of the guide wire 3 is abutted against the upper bracket 41, the annular piston handle 221 is buckled by the index finger, the piston part 22 is controlled to form negative pressure in the needle cylinder 2, the puncture needle 1 is inserted into the body of a patient to puncture the vein, venous blood enters the cylinder body 21 of the needle cylinder 2 through the first one-way valve 231, the guide wire 3 abutted against the upper bracket 41 is placed into the blood vessel of the patient along the puncture needle through the thumb after the return blood is observed to be smooth, other fingers are positioned in the bearing space 53 and buckled at the lower bracket 42, the stability of the human mechanics integrated deep vein puncture kit is improved, the operation can be completed by one hand, the problem that the complex operation of two hands is easy to match errors is avoided, the other hand can also be ready to deal with other possible emergency situations or carry out important operations such as adjusting the position of the ultrasonic probe.

Once the guide wire 3 is failed to be placed, the forefinger pushes the piston part 22, venous blood in the needle cylinder 2 cannot enter the puncture needle head 1 through the first one-way valve 231 and returns to the body of a patient, but flows into the liquid collecting pipe 5 through the second one-way valve 52, when enough space allowance exists in the needle cylinder 2, negative pressure puncture veins can be performed again, the puncture needle head 1 is prevented from being pulled out for repositioning and puncturing, additional damage is easily caused to deep venous blood vessels and surrounding soft tissues of the puncture part 11 of the patient, the difficulty in operation caused by excessive influence on blood vessel conditions is avoided, the pressure of an operator is favorably reduced, and the operation can be completed by one hand. The model of bracket accords with the mechanical characteristics of 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 operative person's comfort level, keeps operative person's finger flexibility, improves seal wire 3 and puts into the success rate.

Example 2

A method of using the integrated human body mechanics deep venipuncture kit of embodiment 1, comprising the steps of:

s1, taking out the guide wire 3 from a guide wire sheath 31 in which the guide wire 3 is stored in advance, inserting one end of the guide wire 3 into the puncture needle head through the side hole 13, sealing the puncture needle head by using a sealing plug in the side hole 13, and enabling the middle part of the guide wire 3 to be abutted against the upper bracket 41;

s2, after the puncture needle head 1 enters the subcutaneous part, the forefinger buckles the annular piston handle 221 and slightly pulls backwards, the piston part 22 is controlled to move along the length direction of the needle cylinder 2 in the piston moving space 43, and the proper negative pressure in the injector is kept; the middle finger, the ring finger and the little finger are positioned in the bearing space 53 and buckled at the lower bracket 42, the puncture needle head 1 is inserted into the body of a patient to puncture to a vein while negative pressure is formed inside the needle cylinder 2, and venous blood enters the cylinder body 21 of the needle cylinder 2 through the first one-way valve 231;

s3, after the needle tip penetrates into the deep vein, dark red venous blood can be seen, and after smooth blood return is observed, the guide wire 3 can be rubbed by the thumb by means of the upper bracket 41 and sent into the vein of the patient, wherein the moving distance is about 10cm; as shown in fig. 3 and 7, on the premise of not blocking the blood flow in the needle tip, 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 of the puncture needle head 1 in advance, the guide wire 3 can be inserted by less twisting of the thumb, and the most critical step can be completed with the minimum action;

s4, if the needle point of the puncture needle head 1 is pulled out of the vein and the guide wire 3 fails to be placed, the forefinger pushes the piston part 22 to enable the venous blood in the needle cylinder 2 to flow into the liquid collecting pipe 5 through the second one-way valve 52, and the operation of the steps S2 to S3 is tried again after small adjustment under the condition that the puncture needle head 1 is not pulled out.

The invention improves the existing puncture suite, shortens the time and space from blood withdrawal to the insertion of the guide wire 3 as much as possible, can realize one-hand operation through the human body mechanics integrated deep vein puncture suite, completes the most critical steps with the minimum action, prepares emergency operation or carries out important operations such as adjusting the position of the ultrasonic probe and the like by the other hand, and achieves the purpose of improving the success rate of the insertion.

The foregoing description of specific embodiments of the present 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 one 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

1. A human-body-mechanics integrated deep venipuncture kit is characterized by comprising a puncture needle head (1), a needle cylinder (2) and a guide wire (3); the needle cylinder (2) comprises a cylinder body (21) and a piston part (22), the cylinder body (21) is hollow, one end of the cylinder body (21) is in plug fit with the piston part (22), and the other end of the cylinder body is provided with a connecting end (23);

the puncture needle head (1) comprises a puncture part (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 needle cylinder (2), and a sealing block is arranged in the side hole (13); one end of the guide wire (3) passes through the sealing block and enters the puncture needle head (1) from the side hole (13);

the human-body-mechanics integrated deep venipuncture kit further comprises an upper bracket (41) and a liquid collecting pipe (5), wherein the upper bracket (41) is connected with the upper surface of the needle cylinder (2), and the thickness of one side, close to the puncture needle head (1), of the upper bracket (41) is smaller than that of the middle part of the upper bracket (41); the middle part of the guide wire (3) is abutted against the upper surface of the upper bracket (41);

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, close to the puncture needle head (1), of the cylinder body (21) of the needle cylinder (2), and the other end of the liquid collecting tube (5) is provided with an air pressure balancing hole (51);

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

and 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).

2. The integrated human-mechanical deep venipuncture kit of claim 1, wherein one end of the piston part (22) away from the puncture needle head (1) is provided with a piston handle (221); the piston shank (221) is annular in shape.

3. The ergonomic unitary deep venipuncture kit of claim 1 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 puncture syringe needle (1) in seal wire (3).

4. The integrated human-mechanical deep venipuncture kit of claim 1, further comprising a lower bracket (42), wherein the lower bracket (42) is connected to the lower surface of the syringe (2), and the lower bracket (42) is in the shape of a gun rest;

a piston moving space (43) is formed between the upper bracket (41) and the lower bracket (42), and the piston part (22) moves in the piston moving space (43) along the length direction of the needle cylinder (2);

a bearing space (53) is formed between the lower bracket (42) and the liquid collecting pipe (5).

5. The integrated human-mechanical deep venipuncture kit of claim 4, wherein 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; the shape of the piston moving space (43) is circular or elliptical.

6. The integrated human-mechanical deep venipuncture kit of claim 4, wherein an end of the liquid trap (5) away from the puncture needle (1) is connected to the upper holder (41) and/or the lower holder (42).

7. The human-mechanical integrated deep venipuncture kit as claimed in claim 1, wherein at least one drain valve (54) is opened on the outer circumference side of the liquid collecting tube (5); the drain valve (54) is positioned on the lower surface of the outer periphery of the liquid collecting pipe (5).

8. The human-mechanical integrated deep venipuncture kit as claimed in claim 1, wherein an angle between a tangent line of the semi-annular portion of the liquid collecting tube (5) near one end of the puncture needle head (1) and the needle cylinder (2) is less than 90 °.

9. The integrated human-mechanical deep venipuncture kit as claimed in claim 1, wherein the barrel (21) of the syringe (2) and the liquid collecting tube (5) are transparent or translucent.

10. A method of using the integrated human body mechanics deep venipuncture kit of claim 1 comprising the steps of:

s1, inserting one end of a guide wire (3) into a secondary puncture needle through a side hole (13), wherein the middle part of the guide wire (3) is abutted against an upper bracket (41);

s2, a finger controls a piston part (22) to form negative pressure in the needle cylinder (2) and simultaneously insert the puncture needle head (1) into the body of a patient to puncture to a vein, and venous blood enters a cylinder body (21) of the needle cylinder (2) through a first one-way valve (231);

s3, after the smooth blood return is observed, the guide wire (3) which is abutted against the upper bracket (41) is placed into the blood vessel of the patient along the puncture needle by using another finger;

s4, if the needle point of the puncture needle head (1) is separated from the vein, the guide wire (3) is failed to be placed, the piston part (22) is pushed to enable the venous blood in the needle cylinder (2) to flow into the liquid collecting pipe (5) through the second one-way valve (52), and the operation of the steps S2 to S3 is retried after small adjustment under the condition that the puncture needle head (1) is not pulled out.