CN212879314U

CN212879314U - Disposable arteriovenous internal fistula puncture blood taking needle

Info

Publication number: CN212879314U
Application number: CN202020533764.8U
Authority: CN
Inventors: 陈彦茹; 曹永桂; 古晓霞
Original assignee: Third Affiliated Hospital Sun Yat Sen University
Current assignee: Third Affiliated Hospital Sun Yat Sen University
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2021-04-06
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a disposable arteriovenous internal fistula puncture blood taking needle, which comprises a Y-shaped hose main body, wherein the hose main body comprises a main hose and two branch hoses which are integrally formed and mutually communicated, the tail end of the main hose is connected with a puncture part, and the tail ends of the two branch hoses are respectively connected with a blood sampling part for connecting a blood sampling tube and a luer connector for connecting an external extension tube or a hemodialysis machine catheter; liquid stopping clamps are respectively arranged on the main hose and the two branch hoses of the hose main body. The utility model discloses under the condition that does not increase the puncture number of times, can satisfy blood sample collection, can establish external circulation again and dialyse the treatment, simplified medical personnel's work flow, reduced patient's misery.

Description

Disposable arteriovenous internal fistula puncture blood taking needle

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to disposable arteriovenous internal fistula puncture blood taking needle.

Background

At present, an arteriovenous internal fistula puncture needle of a hemodialysis patient is only used for establishing extracorporeal circulation during dialysis treatment, and if a blood sample needs to be collected before the dialysis treatment of the patient starts, an injector is usually connected to the internal fistula puncture needle, and then the blood in the injector is distributed and injected into each blood collection tube. However, blood collection using a syringe has certain drawbacks: firstly, the blood volume pumped by the injector is evaluated according to the required volume of the test tube before blood sampling, so that the problems that the test result is influenced due to insufficient blood volume in the test tube, the blood waste of a patient is caused due to excessive blood sampling, the sample needing anticoagulation is coagulated and the like are easily caused during subpackage; secondly, in the process of drawing blood by using the syringe, then unloading and packaging the syringe, the blood specimen is difficult to be polluted or splashed, so that the hands of an operation table and a nurse are polluted, the exposure time and times of the pipeline are long, and the blood-borne pollution and cross infection probability are increased; thirdly, the whole blood sampling process has more operation links, is not beneficial to the operation of medical personnel, prolongs the treatment time of patients and increases the pain of patients.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims to provide a disposable internal arteriovenous fistula puncture blood taking needle under the condition that does not increase the puncture number of times, can satisfy the accurate collection of blood sample, can establish external circulation again and dialyse the treatment, has reduced the probability of taking place blood pollution moreover, has simplified medical personnel's work flow, reduces patient's misery.

The utility model provides a technical problem adopt following technical scheme to realize:

a disposable arteriovenous internal fistula puncture blood taking needle comprises a Y-shaped hose main body, wherein the hose main body comprises a main hose and two branch hoses which are integrally formed and mutually communicated, the tail end of the main hose is connected with a puncture part, and the tail ends of the two branch hoses are respectively connected with a blood taking part for connecting a blood taking tube and a luer connector for connecting an external extension tube or a hemodialysis machine catheter; liquid stopping clamps are respectively arranged on the main hose and the two branch hoses of the hose main body;

the blood sampling portion includes needle file, set up needle body and the connector of connecting the needle file and communicating the branch hose on the needle file, the connector with pipeline kneck between the needle file is provided with the film, the central point of film is provided with and closes, open opening under the negative pressure under the normal pressure.

Wherein, the opening is in a cross shape, a Y shape, a C shape and a V shape structure.

Wherein, the front end of the connector is inserted in the needle seat; the film is arranged at the front end of the connector.

The puncture part comprises a pintle, a puncture needle arranged on the pintle and a protective sleeve sleeved outside the puncture needle and the pintle, wherein a chute is axially formed in the outer wall of the protective sleeve, and a guide shifting block which penetrates through the protective sleeve and can move along the chute is arranged on the outer wall of the pintle; the other end of the pintle is communicated with the main hose.

And limiting clamping grooves are respectively arranged at two ends of the sliding groove along the circumferential direction of the outer wall of the protective sleeve.

Wherein, two sides of the outer wall of the protective sleeve are provided with symmetrical butterfly wing pieces; the bottom surfaces of the two butterfly wing pieces are provided with adhesive layers.

Wherein, luer cover cap is connected with the outside of the luer connector in a matching way.

Wherein, the hose main body is made of thermoplastic polyurethane elastomer material.

The utility model discloses beneficial effect as follows:

1. the utility model adopts Y-shaped structure design, comprising a main hose and two branch hoses which are integrally formed and mutually communicated, wherein the tail end of the main hose is connected with a puncture part, and the tail ends of the two branch hoses are respectively connected with a blood sampling part for connecting a blood sampling tube and a luer connector for connecting an external extension tube or a hemodialysis machine catheter; when the medical care personnel works, the medical care personnel can firstly pierce into a blood vessel of a patient through the puncture part, a blood sampling part is used for collecting a blood sample of the patient, and after the blood sampling is finished, the blood sampling part is connected with a circulating pipeline through a Ruhr joint at the end part of the other branch hose to start blood leading for dialysis treatment; the utility model discloses under the condition that does not increase the puncture number of times, can satisfy blood sample collection, can establish external circulation again and dialyse the treatment, simplified medical personnel's work flow, reduced patient's misery.

2. In the blood sampling part of the utility model, a pipeline interface between the connector and the needle seat is provided with a film, the central part of the film is provided with an opening, when the needle body of the blood sampling part is inserted into the blood sampling pipe, the negative pressure in the blood sampling pipe is combined with the positive pressure of the high blood vessel of a patient, the opening in the middle of the film is stressed to open, simultaneously, the blood of the patient is promoted to automatically flow into the blood sampling tubes, different negative pressures are arranged on different blood sampling tubes according to the blood volume requirement, so as to realize blood sampling as required, when the negative pressure disappears after the blood sampling is finished, the opening of the film is closed under the positive pressure, can replace a new blood collection tube for blood collection, and the condition that blood drips from the needle body can not occur due to the blocking of the film in the replacement process, the waste of blood resources of the patient is avoided, and the tension of medical care personnel in the blood collection process is reduced, so that better service is brought to the patient. And the blood sampling process is carried out in a closed environment, so that the probability of cross infection or blood pollution is reduced.

3. In the utility model, the outside of the pintle and the puncture needle of the puncture part are provided with protective sleeves, the pintle is provided with a guide shifting block which passes through the protective sleeve and can move along a chute of the protective sleeve, and two ends of the chute are provided with limit clamping grooves; when medical personnel carry out the puncture operation to the patient, dial the direction shifting block to the spacing draw-in groove of spout upper end in, the pjncture needle exposes the protective sheath outside, after the puncture operation, extracts the pjncture needle, then will lead in the shifting block dials to the spacing draw-in groove of spout bottom, the pjncture needle is retracted again in the protective sheath, avoids the syringe needle to expose in the external world, and medical personnel are stabbed to the accident, causes cross infection.

4. The utility model discloses in, the hose main part adopts thermoplastic polyurethane elastomer material to make, compares with the disposable plastic coupling hose that general polyvinyl chloride material was made, and the auxiliary agent cyclohexanone and the plasticizer that need use when having avoided using polyvinyl chloride injection moulding have stopped above-mentioned two kinds of compositions from the source and have appeared influencing treatment in the liquid medicine and cause certain risk to patient. Protective sheath outside is provided with the butterfly fin of symmetry, and the bottom of two butterfly fins is provided with the viscose layer, medical personnel is accomplishing the puncture action back, then be fixed in the pjncture needle on patient's skin through the viscose layer of butterfly fin bottom, it produces unnecessary and rocks to avoid puncture back pjncture needle, and the shape design of butterfly fin has increased the area of contact with the human body, and easily medical personnel more convenient hold the puncture portion of taking, puncture the operation to patient's blood vessel, avoid the secondary puncture, it is painful to alleviate the patient.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the blood sampling part of the present invention;

FIG. 3 is a schematic structural view of a thin film opening of the present invention;

FIG. 4 is a schematic view of the connection structure of the puncture needle and the pintle in the puncture part of the present invention;

fig. 5 is a schematic view of the usage state of the guiding shifting block of the present invention when the guiding shifting block slides to the limiting slot at the upper end of the sliding chute;

fig. 6 is a schematic structural view of the middle puncture needle of the present invention in a state of being retracted into the sheath.

Wherein: 1. a hose body; 2. a main hose; 3. a branch hose; 4. a puncture section; 41. a pintle; 411. a guide shifting block; 42. puncturing needle; 43. a protective sleeve; 431. a chute; 4311. a limiting clamping groove; 432. a butterfly wing panel; 5. a blood collection part; 51. a needle seat; 52. a needle body; 53. a connector; 54. a film; 541. an opening; 6. a luer fitting; 7. liquid stopping clips; 8. a luer cap.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Referring to the attached drawings 1-6, a disposable arteriovenous internal fistula puncture blood taking needle comprises a Y-shaped hose body 1, wherein the hose body 1 comprises a main hose 2 and two branch hoses 3 which are integrally formed and mutually communicated, the tail ends of the main hose 2 are connected with a puncture part 4, the tail ends of the two branch hoses 3 are respectively connected with a blood sampling part 5 for connecting a blood sampling tube and a luer connector 6 for connecting an external extension tube or a hemodialysis machine catheter, and the exterior of the luer connector 6 is matched and connected with a luer cap 8; the main hose 2 and the two branch hoses 3 of the hose main body 1 are respectively provided with a liquid stopping clamp 7; the blood sampling part 5 comprises a needle seat 51, a needle body 52 arranged on the needle seat 51 and a connector 53 which is connected with the needle seat 51 and communicated with the branch hose 3, a thin film 54 is arranged at the pipeline interface between the connector 53 and the needle seat 51, and an opening 541 which is closed under normal pressure and opened under negative pressure is arranged at the central part of the thin film 54; the opening 541 is cross-shaped; the front end of the connector 53 is inserted into the needle seat 51; the film 54 is disposed at the front end of the connection head 53.

Further, the puncture part 4 comprises a pintle 41, a puncture needle 42 mounted on the pintle 41, and a protective sleeve 43 sleeved outside the puncture needle 42 and the pintle 41, wherein a sliding groove 431 is axially formed in an outer wall of the protective sleeve 43, and a guide shifting block 411 which penetrates through the protective sleeve 43 and can move along the sliding groove 431 is arranged on the outer wall of the pintle 41; the other end of the pintle 41 is communicated with the main hose 2; and two ends of the sliding groove 431 are respectively provided with a limiting clamping groove 4311 along the circumferential direction of the outer wall of the protective sleeve 43. When medical personnel carried out the puncture operation to the patient, dialling the direction shifting block 411 to the spacing draw-in groove 4311 of spout 431 upper end in, pjncture needle 42 exposes in protective sheath 43 outsidely, after the puncture operation, extracts pjncture needle 42, then in dialling the direction shifting block 411 to the spacing draw-in groove 4311 of spout 431 bottom, pjncture needle 42 retracts back again to protective sheath 43 in, avoids the syringe needle to expose in the external world, and medical personnel are stabbed to the accident, causes cross infection.

Further, two sides of the outer wall of the protective sleeve 43 are provided with symmetrical butterfly wings 432; the bottom surfaces of the two butterfly wing pieces 432 are provided with the sticking layers, so that the puncture needle 42 is stuck and fixed on the skin of a patient after puncture, unnecessary shaking generated after puncture is avoided, secondary puncture is avoided, and the pain of the patient is relieved.

Furthermore, the hose body 1 is made of thermoplastic polyurethane elastomer materials, and compared with the disposable plastic connecting hose made of polyvinyl chloride materials, the disposable plastic connecting hose avoids the use of cyclohexanone and plasticizer which are auxiliary agents required in polyvinyl chloride injection molding, and fundamentally prevents the two components from being separated out into liquid medicine to influence the treatment effect and cause certain risks to patients.

The utility model discloses the theory of operation as follows:

before puncture, the liquid stopping clamps 7 on the main hose 2 and the two branch hoses 3 are opened, then the guide shifting block 411 in the puncture part 4 is drawn into the limiting clamping groove 4311 at the upper end of the sliding groove 431 of the protective sleeve 43 to drive the pintle 41 to move so as to expose the puncture needle 42, then the puncture needle 42 is aligned with the blood vessel of a patient to puncture, and after the puncture is successful, the butterfly wing sheets 432 on the two sides of the protective sleeve 43 are adhered to the skin of the patient by the adhesive layer at the bottom of the butterfly wing sheets, so that the shaking of the puncture needle 42 is reduced; after the puncture is finished, the luer cover cap 8 at the luer joint 6 is unscrewed, the luer cover cap 8 is immediately screwed after the blood of a patient is filled in the hose body 1, then the needle body 52 in the blood sampling part 5 is inserted into a blood sampling tube for blood sample collection, the pipeline interface between the connector 53 and the needle base 51 is provided with a film 54, the central part of the film 54 is provided with an opening 541, when the needle body 52 of the blood sampling part 5 is inserted into the blood sampling tube, the negative pressure in the blood sampling tube is combined with the high blood vessel positive pressure of the patient, the opening 541 in the middle of the film 54 is stressed to be opened, meanwhile, the blood of the patient is automatically promoted to flow into the blood sampling tube, different blood sampling tubes are provided with different negative pressures according to the blood volume requirement so as to realize blood sampling according to requirements, and when the negative pressure disappears after the blood sampling is finished, the opening 541 of the film 54 is closed under the, the condition that blood drips from the needle body 52 can not occur, and the waste of blood resources of the patient is avoided; after blood sampling is finished, the main hose 2 and the liquid stopping clamp 7 on the branch hose 3 connected with the blood sampling part 5 are closed, the luer connector at the end part of the other branch hose 3 is connected with a circulating pipeline, blood drawing is started to perform dialysis treatment, after the treatment is finished, the puncture needle 42 is pulled out, the guide shifting block 411 is drawn to the limiting clamping groove 4311 at the lower end of the sliding groove 431, the puncture needle 42 retracts back into the protective sleeve 43 again, and the needle head is prevented from being exposed outside to stab medical staff. The utility model discloses under the condition that does not increase the puncture number of times, can satisfy blood sample collection, can establish external circulation again and dialyse the treatment, simplified medical personnel's work flow, reduced patient's misery.

The above only is the detailed implementation manner of the present invention, not limiting the patent scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a disposable arteriovenous internal fistula puncture blood taking needle which characterized in that: the blood sampling tube comprises a Y-shaped tube main body (1), wherein the tube main body (1) comprises a main tube (2) and two branch tubes (3) which are integrally formed and mutually communicated, the tail end of the main tube (2) is connected with a puncture part (4), and the tail ends of the two branch tubes (3) are respectively connected with a blood sampling part (5) for connecting a blood sampling tube and a luer connector (6) for connecting an external extension tube or a hemodialysis machine catheter; liquid stopping clamps (7) are respectively arranged on the main hose (2) and the two branch hoses (3) of the hose main body (1); blood sampling portion (5) include needle file (51), install needle body (52) and connection needle file (51) on needle file (51) and communicate connector (53) of branch hose (3), connector (53) with pipeline kneck between needle file (51) is provided with film (54), the central part of film (54) is provided with opening (541) that closes under the atmospheric pressure, open under the negative pressure.

2. The disposable arteriovenous internal fistula puncture blood taking needle of claim 1, wherein: the opening (541) is in a cross-shaped, Y-shaped, C-shaped or V-shaped structure.

3. The disposable arteriovenous internal fistula puncture blood taking needle of claim 1, wherein: the front end of the connector (53) is inserted into the needle seat (51); the film (54) is arranged at the front end of the connecting head (53).

4. The disposable arteriovenous internal fistula puncture blood taking needle of claim 1, wherein: the puncture part (4) comprises a pintle (41), a puncture needle (42) arranged on the pintle (41) and a protective sleeve (43) sleeved outside the puncture needle (42) and the pintle (41), a sliding groove (431) is formed in the outer wall of the protective sleeve (43) in the axial direction, and a guide shifting block (411) which penetrates through the protective sleeve (43) and can move along the sliding groove (431) is arranged on the outer wall of the pintle (41); the other end of the pintle (41) is communicated with the main hose (2).

5. The disposable arteriovenous internal fistula puncture blood taking needle of claim 4, wherein: and two ends of the sliding groove (431) are respectively provided with a limiting clamping groove (4311) along the circumferential direction of the outer wall of the protective sleeve (43).

6. The disposable arteriovenous internal fistula puncture blood taking needle of claim 4, wherein: two sides of the outer wall of the protective sleeve (43) are provided with symmetrical butterfly fins (432); the bottom surfaces of the two butterfly wing pieces (432) are provided with adhesive layers.

7. The disposable arteriovenous internal fistula puncture blood taking needle of claim 1, wherein: the luer connector (6) is externally connected with a luer cap (8) in a matching way.

8. The disposable arteriovenous internal fistula puncture blood taking needle of claim 1, wherein: the hose body (1) is made of a thermoplastic polyurethane elastomer material.