CN213191763U

CN213191763U - Special needle of PICC with collect blood return function

Info

Publication number: CN213191763U
Application number: CN202020514206.7U
Authority: CN
Inventors: 田甜; 刘敏
Original assignee: Peoples Hospital of Deyang City
Current assignee: Peoples Hospital of Deyang City
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-05-14
Anticipated expiration: 2030-04-08

Abstract

The utility model relates to the technical field of medical equipment, and discloses a PICC special needle with blood return collection function, which comprises a needle seat, a steel needle and a blood return device, wherein the blood return device comprises a connector, a drainage catheter, a drip chamber, a connecting pipe and a collection bag, the connector is detachably connected with one end of the needle seat, a drainage channel is arranged inside the connector along the length direction of the connector, and the drainage channel runs through the connector; one end of the drainage catheter is inserted into the drainage channel, and the outer wall of the drainage catheter is attached to the inner wall of the drainage channel; the other end of the drainage catheter is communicated with the dropping funnel; the tail end of the steel needle penetrates through the needle seat and then extends into a drainage conduit in the drainage channel; one end of the connecting pipe is communicated with the dropping funnel, and the other end of the connecting pipe is communicated with the collecting bag. The utility model can make the blood which flows back in the puncture process directly flow into the collection bag for storage, thereby avoiding the blood from being infected; meanwhile, the blood flowing back into the collection bag can be used as a sample for blood test and analysis, and the need of drawing the blood from the patient again is avoided.

Description

Special needle of PICC with collect blood return function

Technical Field

The utility model relates to the technical field of medical equipment, particularly, relate to a special needle of PICC with collect blood return function.

Background

The central venous catheterization of the puncture of peripheral vein is also called PICC catheterization, all uses special PICC needle to carry out vascular puncture before putting the pipe, because during the puncture if puncture success blood can drip from the afterbody. In order to treat the dripping blood, the prior art has been to place a piece of sterile gauze to catch the dripping blood at the end of the needle. But this increases the chance of direct blood contact with the air, with a certain risk of infection. Therefore, the patent document with the publication number 2010201850922 discloses an indwelling needle, in particular to a closed indwelling needle with a blood return bin, which is structurally characterized by further comprising the blood return bin, the blood return bin is positioned on a needle base, the tail end of the steel needle is connected with the blood return bin, meanwhile, the inner cavity of the steel needle is communicated with the blood return bin through the tail end, and part or all of the peripheral wall of the blood return bin is a visible transparent part. The blood is flowed back out when this indwelling needle reaches the collection puncture through setting up the blood storehouse that returns, realizes the mesh isolated with the air. Then, the reserved blood return bin of the indwelling needle is limited, so that the condition that the blood return bin is filled with blood in a short time easily occurs, and the normal puncture operation is influenced; meanwhile, the blood returned from the blood return bin is not easy to take out, and the risk of infection exists in the taking-out process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a special needle of PICC with collect blood return function to solve above-mentioned technical problem.

The embodiment of the utility model discloses a realize through following technical scheme:

a PICC special needle with a blood collection and return function comprises a needle seat, a steel needle and a blood return device, wherein the blood return device comprises a connector, a drainage catheter, a dropping funnel, a connecting pipe and a collection bag, the connector is detachably connected with one end of the needle seat, a drainage channel is arranged in the connector along the length direction of the connector, and the drainage channel penetrates through the connector; one end of the drainage catheter is inserted into the drainage channel, and the outer wall of the drainage catheter is attached to the inner wall of the drainage channel; the other end of the drainage catheter is communicated with the dropping funnel; the tail end of the steel needle penetrates through the needle seat and then extends into the drainage conduit in the drainage channel; one end of the connecting pipe is communicated with the dropping funnel, and the other end of the connecting pipe is communicated with the collecting bag.

Through the setting, when medical personnel when carrying out vein catheterization puncture, if back in the steel needle inserts patient's vein blood vessel, blood in the vein blood vessel flows along the steel needle, takes place to return the blood phenomenon, and the blood that flows back out at this moment gets into behind steel needle, drainage catheter, drip chamber and the connecting pipe in proper order and collects the bag. Therefore, the blood is isolated from the air in the whole blood collection process, and the blood is prevented from being polluted; meanwhile, the blood entering the collection bag can be used for blood examination and analysis, so that the blood of a patient needs to be independently extracted, and the injury to the patient is increased.

Optionally, a sealing rubber mat is arranged in the drainage channel, the end of the drainage catheter is abutted to the outer wall of the sealing rubber mat, and the steel needle penetrates through the sealing rubber mat and then extends into the drainage catheter.

Optionally, the sealing rubber pad is arranged at one end of the drainage channel close to the needle seat, and an inner concave part is arranged at one side of the sealing rubber pad, which deviates from the drainage catheter.

Optionally, the tail end of the steel needle is provided with a tip portion.

Optionally, an accommodating cavity is arranged on one side of the needle seat, which is far away from the steel needle, the axis of the accommodating cavity is overlapped with the axis of the needle seat, and an internal thread is arranged on the inner wall of the accommodating cavity; the connector is close to needle file one side is equipped with connecting portion, connecting portion be equipped with the external screw thread of internal thread adaptation.

Optionally, the connector is made of a transparent material.

Optionally, the disposable medical syringe further comprises a protective sleeve, and a sealing rubber plug is arranged inside the protective sleeve.

The utility model discloses technical scheme has following advantage and beneficial effect at least:

compared with the prior art, the PICC special needle provided by the embodiment of the utility model has the advantages that the blood returning device matched with the steel needle is arranged at the tail end of the steel needle, so that the blood returned in the puncture process can directly flow into the collection bag for storage, and the blood is isolated from the air in the whole process, thereby avoiding the blood from being infected; meanwhile, the blood flowing back into the collection bag can be used as a sample for blood test analysis, so that the blood for test needs to be extracted from the patient again, and the injury to the patient is increased.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a PICC special needle provided in an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a PICC special needle provided in an embodiment of the present invention;

fig. 3 is a schematic view of an internal structure of a connector according to an embodiment of the present invention;

fig. 4 is a schematic view of an internal structure of a needle holder provided in the embodiment of the present invention.

Icon: 1-needle seat, 2-steel needle, 3-protective sleeve, 4-sealing rubber plug, 5-connector, 6-drainage catheter, 7-drip funnel, 8-connecting tube, 9-collecting bag, 10-drainage channel, 11-sealing rubber pad, 12-concave part, 13-containing cavity, 14-connecting part and 15-sealing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

referring to fig. 1 and 2, the special PICC needle with the function of collecting blood return is used for puncturing a venous blood vessel of a patient in a venous catheterization process, so that a hose to be placed enters the venous blood vessel of the patient under the traction of a steel needle 2; the PICC special needle comprises a needle seat 1, a steel needle 2 and a blood return device, wherein the needle seat 1 adopts the needle seat of the existing conventional remaining needle, and a hose to be placed is directly arranged on the outer wall of the steel needle 2; meanwhile, the outer wall 1 of the needle stand is provided with a handle part which is convenient for medical personnel to perform puncture operation, and the handle part is provided with an anti-skid bulge; in addition, the PICC special needle further comprises a protective sleeve 3 for protecting the steel needle, a sealing rubber plug 4 is arranged inside the protective sleeve 3, the front end of the steel needle 2 is inserted into the sealing rubber plug 4 in the protective sleeve 3 in an unused state, and the outer wall of the front end of the needle seat 1 is attached to the inner wall of the protective sleeve 3, so that the steel needle 2 is isolated from the outside air, the steel needle 2 is prevented from being infected, and the safety performance of the steel needle 2 is improved; specifically, the blood return device comprises a connector 5, a drainage catheter 6, a dropping funnel 7, a connecting pipe 8 and a collecting bag 9, wherein the connector 5 is detachably connected with one end of the needle base 1, so that the blood return device can be detached conveniently according to the use requirement; a drainage channel 10 is arranged in the connector 5 along the length direction of the connector, and the drainage channel 10 penetrates through the connector 5; one end of the drainage catheter 6 is inserted into the drainage channel 10, the outer wall of the drainage catheter 6 is attached to the inner wall of the drainage channel 10, and air is prevented from entering the drainage catheter 6 from the drainage channel 10; the other end of the drainage catheter 6 is communicated with a dropping funnel 7; the tail end of the steel needle 2 penetrates through the needle seat 1 and then extends into a drainage catheter 7 in the drainage channel 10, so that the returned blood is directly drained into the drainage catheter 6 from the tail end of the steel needle 2; one end of the connecting pipe 8 is communicated with the dropping funnel 7, and the other end is communicated with the collecting bag 9.

Through the arrangement, when medical workers perform vein catheterization puncture, if the steel needle 2 is inserted into the vein of a patient, blood in the vein flows out along the steel needle 2, blood return occurs, and the blood flowing back at the moment flows through the steel needle 2, the drainage catheter 6, the dropping funnel 7 and the connecting pipe 8 in sequence and then enters the collection bag 9. Therefore, the blood is isolated from the air in the whole blood collection process, and the blood is prevented from being polluted; when the backflow blood flows out, medical staff can directly observe the blood flow velocity in the dropping funnel 7 and other conditions to judge whether the steel needle 2 is inserted into the vein of the patient, if no blood exists in the dropping funnel 7 or the blood flow velocity is low, the steel needle 2 is not inserted into the vein or is not completely inserted into the vein, and the medical staff can adjust the position and the insertion depth of the steel needle 2 in time to ensure successful puncture; get into the blood in the collection bag 9 simultaneously still can be used to do blood inspection analysis, when the blood that will flow back out is submitted the inspection, directly will return blood the device pull down can to avoid need to draw patient's blood alone, increase the injury to the patient.

In this embodiment, in order to further improve the sealing of the drainage channel 10, air is prevented from entering the drainage catheter 6 from the drainage channel 10. Referring to fig. 3, a sealing rubber pad 11 is arranged in the drainage channel 10, the end of the drainage catheter 6 is abutted against the outer wall of the sealing rubber pad 11, and the steel needle 2 extends into the drainage catheter 6 after penetrating through the sealing rubber pad 11. Meanwhile, in order to facilitate the steel needle 2 to penetrate through the sealing rubber mat 11, the sealing rubber mat 11 is arranged at one end, close to the needle seat 1, of the drainage channel 10, an inner concave part 12 is arranged at one side, away from the drainage catheter 6, of the sealing rubber mat 11, the tail end of the steel needle 2 penetrates through the sealing rubber mat 11 through the inner concave part 12, the steel needle 2 is convenient to align, and the steel needle 2 is prevented from penetrating through the sealing rubber mat 11 and then being inserted into the wall of the drainage catheter 6; preferably, the central axis of the concave portion 12 coincides with the central axis of the drainage channel 11. And the tail end of the steel needle 2 is provided with a tip part, so that the sealing rubber mat 11 which can be rapidly penetrated by the steel needle enters the drainage catheter 6.

In this embodiment, to achieve a quick-release blood return device. Referring to fig. 4, an accommodating cavity 13 is arranged on one side of the needle base 1 departing from the steel needle 2, the axis of the accommodating cavity 13 is overlapped with the axis of the needle base 1, and an internal thread is arranged on the inner wall of the accommodating cavity; one side of the connector 5, which is close to the needle base 1, is provided with a connecting part 14, and the connecting part 14 is provided with an external thread matched with the internal thread. When the blood return device is installed, the steel needle 2 is aligned to the drainage catheter 6, the connecting part 14 is aligned to the accommodating cavity 13, the blood return device can be installed on the needle base 1 by rotating the connecting part 14, and after the connector 5 is fixed, one end of the drainage catheter 6 is inserted into the drainage channel 10 in the connector 5; on the contrary, when the blood return device is disassembled, the drainage catheter 6 is firstly pulled out, and the connector 5 is disassembled, so that the blood return device can be rapidly disassembled, and the operation is simple and convenient. Of course, when the blood return device is to be attached and detached, the connector 5 may be rotated with the drainage catheter 6 inserted into the connector 5, and at this time, the drip chamber 7 and the collection bag 9 need to be rotated together with the connector 5. In addition, a sealing ring 15 may be disposed at a contact position between the connecting portion 14 and the accommodating cavity 13 to further improve the sealing performance after the needle holder 1 is connected to the connector 5.

In this embodiment, in order to observe the condition that the tail end of the steel needle 2 is inserted into the drainage catheter 6, the connector 5 is made of transparent material, and the medical staff can directly observe whether the blood backflow phenomenon occurs through the connector 2.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a special needle of PICC with collect blood return function, includes needle file, steel needle and blood return device, its characterized in that: the blood returning device comprises a connector, a drainage catheter, a dropping funnel, a connecting pipe and a collecting bag, wherein the connector is detachably connected with one end of the needle base, a drainage channel is arranged in the connector along the length direction of the connector, and the drainage channel penetrates through the connector; one end of the drainage catheter is inserted into the drainage channel, and the outer wall of the drainage catheter is attached to the inner wall of the drainage channel; the other end of the drainage catheter is communicated with the dropping funnel; the tail end of the steel needle penetrates through the needle seat and then extends into the drainage conduit in the drainage channel; one end of the connecting pipe is communicated with the dropping funnel, and the other end of the connecting pipe is communicated with the collecting bag.

2. The needle for PICC having the function of collecting returned blood according to claim 1, wherein: the drainage channel is internally provided with a sealing rubber mat, the end part of the drainage catheter is abutted to the outer wall of the sealing rubber mat, and the steel needle penetrates through the sealing rubber mat and then extends into the drainage catheter.

3. The needle for PICC having a function of collecting returned blood according to claim 2, wherein: the sealed rubber mat is arranged at one end, close to the needle seat, of the drainage channel, and an inner concave part is arranged on one side, away from the drainage catheter, of the sealed rubber mat.

4. The needle for a PICC having the function of collecting the returned blood according to claim 2 or 3, wherein: the tail end of the steel needle is provided with a tip part.

5. The needle for PICC having the function of collecting returned blood according to claim 1, wherein: an accommodating cavity is formed in one side, away from the steel needle, of the needle seat, the axis of the accommodating cavity is overlapped with the axis of the needle seat, and an internal thread is formed in the inner wall of the accommodating cavity; the connector is close to needle file one side is equipped with connecting portion, connecting portion be equipped with the external screw thread of internal thread adaptation.

6. The needle for PICC having the function of collecting returned blood according to claim 1, wherein: the connector is made of transparent materials.

7. The needle for PICC having the function of collecting returned blood according to claim 1, wherein: still include the protective sheath, protective sheath inside is equipped with sealed plug.