CN210843082U

CN210843082U - Novel arteriovenous internal fistula puncture needle capable of directly sampling blood

Info

Publication number: CN210843082U
Application number: CN201921317020.6U
Authority: CN
Inventors: 郭苹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-06-26
Anticipated expiration: 2029-08-14

Abstract

The utility model provides a novel arteriovenous internal fistula puncture needle capable of directly sampling blood. Novel arteriovenous internal fistula pjncture needle that can directly take a blood sample includes pjncture needle, sampling mechanism, coupling mechanism, annular fixed block, annular rubber packing pad, sampling mechanism connect in on the pjncture needle, sampling mechanism includes passageway, opening, holding rod, cylinder, piston, pull rod and spout, the passageway is vertical to be seted up in the pjncture needle, the opening is seted up in the lateral wall of pjncture needle and with the passageway intercommunication, the spout is vertical to be seted up in the holding rod, just pjncture needle sliding connection in the spout, the cylinder connect in the upper end of pjncture needle and with the passageway intercommunication, the piston is located in the cylinder. The utility model provides a novel arteriovenous internal fistula pjncture needle that can directly take a blood sample has the advantage that reduces the nosocomial incidence, reduces the acupuncture wound, improves and gathers the assay sample rate of accuracy.

Description

Novel arteriovenous internal fistula puncture needle capable of directly sampling blood

Technical Field

The utility model relates to an internal fistula pjncture needle technical field especially relates to a novel arteriovenous internal fistula pjncture needle that can directly take a blood sample.

Background

A puncture needle is a commonly used medical device that can be used to puncture organs, tissues or to inject drugs. When carrying out internal fistula puncture to the arteriovenous, generally can use the puncture to the arteriovenous, draw blood or other blood taking needles of reconnection again, sample its blood, conveniently carry out the analysis to the state of an illness.

The existing puncture needle can only be used for puncture operation generally, and can increase the hospital infection incidence rate, increase the puncture wound and reduce the accuracy rate of collecting the laboratory samples in the process of leading blood to a patient or reconnecting other blood taking needles for blood sampling.

Therefore, there is a need to provide a new arteriovenous internal fistula puncture needle capable of directly collecting blood to solve the technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an embodiment of the utility model provides a novel arteriovenous internal fistula pjncture needle that can directly take a blood sample that reduces the nosocomial incidence, reduces the acupuncture wound, improves and gathers the assay sample rate of accuracy is provided.

The utility model provides a novel arteriovenous internal fistula pjncture needle that can directly take a blood sample includes: puncturing needle; the sampling mechanism is connected to the puncture needle and comprises a channel, an opening, a holding rod, a needle cylinder, a piston, a pull rod and a sliding groove, the channel is vertically arranged in the puncture needle, the opening is arranged on the side wall of the puncture needle and communicated with the channel, the sliding groove is vertically arranged in the holding rod, the puncture needle is slidably connected into the sliding groove, the needle cylinder is connected to the upper end of the puncture needle and communicated with the channel, the piston is positioned in the needle cylinder, and the pull rod is inserted into the needle cylinder and fixedly connected with the piston; the connecting mechanism is arranged in the holding rod.

Preferably, coupling mechanism includes connecting block, communicating pipe, annular stopper and spread groove, connecting block fixed connection in the lower extreme of cylinder, communicating pipe fixed connection in the lower extreme of connecting block and with the cylinder intercommunication, just communicating pipe insert locate in the passageway, the spread groove set up in the upper end of holding rod, just connecting block threaded connection in the spread groove, the annular stopper is located in the spread groove and fixed cover locate on the pjncture needle.

Preferably, the inner wall of the needle cylinder is fixedly connected with an annular fixing block, the annular fixing block is close to the upper end of the needle cylinder, and the pull rod penetrates through the annular fixing block.

Preferably, the side wall of the communicating pipe is sleeved with an annular rubber sealing gasket.

Preferably, the through opening is arranged close to one end, far away from the needle cylinder, of the puncture needle.

Preferably, the holding rod is provided with anti-skid grains.

Compared with the prior art, the utility model provides a novel arteriovenous internal fistula pjncture needle that can directly take a blood sample has following beneficial effect:

this device is in the use, medical staff holds the holding rod, pierce the pjncture needle in patient's the quiet artery, carry out internal fistula pjncture needle operation, after the puncture, medical staff uses another hand to the pull rod and stimulates, it slides in the cylinder to drive the piston, produce the negative pressure in making the cylinder, thereby absorb the blood in the quiet artery through passageway and opening, carry out the sampling operation, this device easy operation, high durability and convenient use, when dialysis patient takes a blood sample, can use sampling mechanism to carry out the collection of blood sample on the pjncture needle after the puncture, need not to draw blood or other blood taking needles of reconnection, reduce the hospital and feel the incidence, reduce the puncture wound, improve the rate of accuracy of gathering the chemical examination sample.

Drawings

Fig. 1 is a schematic structural view of a preferred embodiment of the novel arteriovenous internal fistula puncture needle capable of directly collecting blood provided by the utility model;

FIG. 2 is a schematic structural view of the annular limiting block shown in FIG. 1;

fig. 3 is a schematic structural view of a portion a shown in fig. 1.

Reference numbers in the figures: 1. puncture needle, 2, sampling mechanism, 21, channel, 22, opening, 23, holding rod, 24, syringe, 25, piston, 26, pull rod, 27, spout, 3, coupling mechanism, 31, connecting block, 32, communicating pipe, 33, annular stopper, 34, connecting groove, 4, annular fixed block, 5, annular rubber seal.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1, fig. 2 and fig. 3 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of a novel arteriovenous internal fistula puncture needle capable of directly collecting blood provided by the present invention; FIG. 2 is a schematic structural view of the annular limiting block shown in FIG. 1; fig. 3 is a schematic structural view of a portion a shown in fig. 1. Novel arteriovenous internal fistula pjncture needle that can directly take a blood sample includes: the puncture needle comprises a puncture needle 1, a sampling mechanism 2, a connecting mechanism 3, an annular fixing block 4 and an annular rubber sealing gasket 5.

In the specific implementation process, as shown in fig. 1, fig. 2 and fig. 3, the sampling mechanism 2 is connected to the puncture needle 1, the sampling mechanism 2 includes a passage 21, a through opening 22, a holding rod 23, a needle cylinder 24, a piston 25, a pull rod 26 and a chute 27, the passage 21 is vertically opened in the puncture needle 1, the through opening 22 is opened in the side wall of the puncture needle 1 and is communicated with the passage 21, the chute 27 is vertically opened in the holding rod 23, the puncture needle 1 is slidably connected in the chute 27, the needle cylinder 24 is connected to the upper end of the puncture needle 1 and is communicated with the passage 21, the piston 25 is located in the needle cylinder 24, the pull rod 26 is inserted in the needle cylinder 24 and is fixedly connected with the piston 25, in the use process of the device, a medical staff holds the holding rod 23 to insert the puncture needle 1 into an artery of a patient to perform an internal fistula puncture needle operation, after the puncture, the medical staff pulls the pull rod 26 with, make and produce the negative pressure in the cylinder 24 to absorb the blood in the static artery through passageway 21 and opening 22, carry out the sampling operation, need not to draw blood or other blood taking needles of reconnection, reduce the nosocomial incidence, reduce the puncture wound, improve the rate of accuracy of gathering the laboratory sample.

Referring to fig. 3, the connection mechanism 3 is disposed in the holding rod 23, the connection mechanism 3 includes a connection block 31, a connection pipe 32, an annular stop block 33 and a connection groove 34, the connection block 31 is fixedly connected to the lower end of the syringe 24, the connection pipe 32 is fixedly connected to the lower end of the connection block 31 and is communicated with the syringe 24, the connection pipe 32 is inserted into the channel 21, the connection groove 34 is disposed at the upper end of the holding rod 23, the connection block 31 is screwed into the connection groove 34, the annular stop block 33 is disposed in the connection groove 34 and is fixedly sleeved on the puncture needle 1, the connection block 31 is screwed into the connection groove 34, the annular stop block 33 is pressed by the connection groove 34 and the connection block 31 to limit the connection, that is, the holding rod 23 is fixedly connected to the puncture needle 1 and the syringe 24, the connection pipe 32 is inserted into the channel 21 to communicate the, the needle cylinder 24, the puncture needle 1 and the holding rod 23 can be separated by separating the connecting block 31 from the connecting groove 34, so that the damaged parts can be repaired and replaced conveniently.

Referring to fig. 1, an annular fixing block 4 is fixedly connected to an inner wall of the syringe 24, the annular fixing block 4 is arranged near an upper end of the syringe 24, the pull rod 26 penetrates through the annular fixing block 4, the annular fixing block 4 is arranged to prevent the pull rod 26 from being pulled too large immediately to cause the piston 25 to be accidentally pulled out of the syringe 24, and the pull rod 26 is limited to cause the center of the portion of the pull rod 26 in the syringe 24 to be positioned on the center of a concentric circle with the center of the syringe 24 all the time, so that the piston 25 can be conveniently pulled out.

Referring to fig. 1 and 3, the side wall of the communication pipe 32 is sleeved with an annular rubber packing 5, which ensures the sealing performance when the communication pipe 32 is inserted into the passage 21.

Referring to fig. 1, the through opening 22 is arranged near one end of the puncture needle 1 far away from the needle cylinder 24, and the through opening 22 is provided with a puncture part near the puncture needle 1 so as to collect blood.

Referring to fig. 1, the grip 23 is provided with anti-slip lines, which increases the surface friction of the grip 23, thereby facilitating the medical staff to grip the device.

The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention can be used in other related technical fields, directly or indirectly, or in the same way as the present invention.

Claims

1. A novel arteriovenous internal fistula pjncture needle that can directly take a blood sample which characterized in that includes:

a puncture needle (1);

the sampling mechanism (2), the sampling mechanism (2) is connected to the puncture needle (1), the sampling mechanism (2) comprises a channel (21), a through hole (22), a holding rod (23), a needle cylinder (24), a piston (25), a pull rod (26) and a sliding groove (27), the channel (21) is vertically arranged in the puncture needle (1), the through hole (22) is arranged on the side wall of the puncture needle (1) and communicated with the channel (21), the sliding groove (27) is vertically arranged in the holding rod (23), the puncture needle (1) is connected in the sliding groove (27) in a sliding way, the needle cylinder (24) is connected at the upper end of the puncture needle (1) and is communicated with the channel (21), the piston (25) is positioned in the needle cylinder (24), and the pull rod (26) is inserted in the needle cylinder (24) and is fixedly connected with the piston (25);

the connecting mechanism (3) is arranged in the holding rod (23) in an opening mode.

2. The novel arteriovenous internal fistula puncture needle capable of directly collecting blood according to claim 1, wherein the connecting mechanism (3) comprises a connecting block (31), a communicating pipe (32), an annular limiting block (33) and a connecting groove (34), the connecting block (31) is fixedly connected with the lower end of the needle cylinder (24), the communicating pipe (32) is fixedly connected with the lower end of the connecting block (31) and communicated with the needle cylinder (24), the communicating pipe (32) is inserted into the channel (21), the connecting groove (34) is arranged at the upper end of the holding rod (23), the connecting block (31) is in threaded connection with the connecting groove (34), and the annular limiting block (33) is positioned in the connecting groove (34) and fixedly sleeved on the puncture needle (1).

3. The novel arteriovenous internal fistula puncture needle capable of directly collecting blood according to claim 1, which is characterized in that an annular fixing block (4) is fixedly connected to the inner wall of the needle cylinder (24), the annular fixing block (4) is arranged close to the upper end of the needle cylinder (24), and the pull rod (26) penetrates through the annular fixing block (4).

4. The novel arteriovenous internal fistula puncture needle capable of directly collecting blood according to claim 2, characterized in that an annular rubber gasket (5) is sleeved on the side wall of the communicating pipe (32).

5. The novel arteriovenous internal fistula puncture needle capable of directly collecting blood according to claim 1, characterized in that the through opening (22) is arranged near one end of the puncture needle (1) far away from the needle cylinder (24).

6. The novel arteriovenous internal fistula puncture needle capable of directly collecting blood according to claim 1, characterized in that the holding rod (23) is provided with anti-skid lines.