CN218833277U - Internal fistula puncture needle - Google Patents

Abstract

The utility model discloses an internal fistula puncture needle, which comprises a puncture needle body, a protective sleeve, a main hose and a limiting block, wherein the tail part of the puncture needle body is connected with the main hose, the protective sleeve is sleeved outside the puncture needle body and the main hose, the puncture needle body and the main hose can slide in the protective sleeve, one end of the protective sleeve, which is far away from the puncture needle body, is detachably connected with the main hose, and the distance from the detachable connection part of the main hose and the protective sleeve to the needle point of the puncture needle body is greater than the length of the protective sleeve; the stopper cover is established on the pjncture needle body or the pjncture needle body and the junction of main hose, and the internal diameter of protective case reduces from the direction of pjncture needle body needle point to the needle tail gradually, and the pjncture needle body is in protective case intraductally through sliding and stopper spacing messenger needle point in protective case intraductal. After the puncture needle is used, the needle head is arranged in the protective sleeve, so that the risk of puncture injury and blood pollution of medical personnel and garbage disposal transfer personnel is reduced.

Description

Internal fistula puncture needle

Technical Field

The utility model relates to the technical field of medical equipment, more particularly, the utility model relates to an internal fistula pjncture needle.

Background

Hemodialysis treatment is the main kidney replacement therapy mode of uremia patients, blood is led out of the body through a blood vessel channel, toxin is cleared through a dialysis machine, and then the blood is returned to the bodies of the uremia patients, so that the aim of continuing the lives of the uremia patients is fulfilled. Arteriovenous internal fistula is a life line of hemodialysis patients, and about 95 percent of patients use arteriovenous internal fistula as a vascular access to carry out hemodialysis treatment. When hemodialysis treatment is carried out each time, an internal fistula puncture needle is used for puncturing two needles at an internal arteriovenous fistula and is respectively used as a blood leading passage and a blood returning passage. After the arteriovenous internal fistula puncture needle is pulled out, the needle head is always stained with blood of a patient, the needle cap is fixed on a treatment square towel at present clinically, the needle cap is sleeved back by one hand, and then the internal fistula puncture needle is wrapped and thrown into a garbage can; or the needle cap is not sleeved back and is directly put into a medical sharp instrument box. Both of these ways present the risk of contamination and needle stick injuries to medical personnel.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model discloses innovatively provide an internal fistula pjncture needle, use at the pjncture needle and accomplish the back, can stimulate pjncture needle body and make the syringe needle be in the protective sheath, prevent effectively that the pjncture needle syringe needle from exposing, reduce medical personnel, refuse treatment transportation personnel by the risk of stabbing risk and blood pollution.

In order to realize the technical purpose, the utility model discloses an internal fistula puncture needle, which comprises a puncture needle body, a protective sleeve, a main hose and a limiting block,

the tail part of the puncture needle body is connected with the main hose, the protective sleeve is sleeved outside the puncture needle body and the main hose, the puncture needle body and the main hose can slide in the protective sleeve, one end, far away from the puncture needle body, of the protective sleeve is detachably connected with the main hose, and the distance from the detachable connection part of the main hose and the protective sleeve to the needle point of the puncture needle body is greater than the length of the protective sleeve;

the stopper cover is established and is fixed on the pjncture needle body or the pjncture needle body with the junction of main hose, the internal diameter of protective case reduces from the direction of pjncture needle body needle point to the needle tail gradually, the external diameter of stopper is less than the maximum internal diameter of protective case, be greater than the minimum internal diameter of protective case, the pjncture needle body is through sliding in the protective case and the stopper is in at the spacing needle point that makes of protective case in the protective case.

Furthermore, a blood-sucking cotton layer is fixed on the inner wall of the protective sleeve.

Furthermore, the side part of the main hose is communicated with a blood sampling branch pipe, and a silica gel seal is arranged at the position, far away from the pipe orifice of the main hose, of the blood sampling branch pipe.

Further, the blood sampling branch pipe is a hard PVC pipe.

Furthermore, the two sides of the protection sleeve are symmetrically provided with needle wings.

Furthermore, a transverse adhesive tape and a longitudinal adhesive tape are fixed on the needle wing.

Furthermore, a hemostatic clamp is clamped on the main hose.

Furthermore, a sealing cap is arranged at the end part of the main hose far away from the puncture needle body in a covering mode.

Furthermore, a limiting flange is arranged on the inner wall of one end, far away from the needle head of the puncture needle body, of the protective sleeve.

Furthermore, the main hose is far away from the body of the puncture needle body is sleeved with and fixed with a fixed platform, the fixed platform is detachably connected with one end, far away from the puncture needle body, of the protective sleeve, and the distance from the fixed platform to the needle point of the puncture needle body is greater than the length of the protective sleeve.

The utility model has the advantages that:

the utility model discloses an internal fistula pjncture needle uses the completion back at the pjncture needle, can stimulate pjncture needle body to make the pjncture needle syringe needle be in the protective sheath, prevents effectively that the pjncture needle syringe needle from exposing, reduces medical personnel, refuse treatment transportation personnel and is stabbed risk and blood pollution's risk.

Drawings

Fig. 1 is a schematic structural view of an internal fistula puncture needle according to an embodiment of the present invention;

fig. 2 is a sectional view of an internal fistula puncture needle according to an embodiment of the present invention;

fig. 3 is a schematic view of the internal fistula puncture needle of the embodiment of the invention fixed at the puncture site;

fig. 4 is a schematic view showing the needle head in the protective sleeve after the internal fistula puncture needle of the embodiment of the invention is used.

In the figure, the position of the upper end of the main shaft,

1. a puncture needle body; 2. protecting the sleeve; 3. a main hose; 4. a limiting block; 5. a blood-sucking cotton layer; 6. a blood collecting branch pipe; 7. sealing with silica gel; 8. a needle wing; 9. transverse rubberized fabric; 10. longitudinal rubberized fabric; 11. a hemostatic clamp; 12. a sealing cap; 13. a fixed platform; 14. and a limiting flange.

Detailed Description

The following explains and explains the internal fistula puncture needle provided by the invention in detail with reference to the drawings of the specification.

The embodiment specifically discloses an internal fistula puncture needle, as shown in fig. 1 and 2, the internal fistula puncture needle comprises a puncture needle body 1, a protective sleeve 2, a main hose 3 and a limiting block 4, wherein the tail part of the puncture needle body 1 is connected with the main hose 3, the protective sleeve 2 is sleeved outside the puncture needle body 1 and the main hose 3, the puncture needle body 1 and the main hose 3 can slide in the protective sleeve 2, one end, far away from the puncture needle body 1, of the protective sleeve 2 is detachably connected with the main hose, and the distance from the detachable connection part of the main hose and the protective sleeve 2 to the needle point of the puncture needle body 1 is greater than the length of the protective sleeve 2; when puncture is carried out, the protective sleeve 2 is kept connected with the main hose, and at the moment, the needle point of the puncture needle body 1 is positioned outside the protective sleeve 2.

As shown in fig. 2, the stopper 4 is sleeved on the puncture needle body 1 or at the joint of the puncture needle body 1 and the main hose 3, the inner diameter of the protective sleeve 2 is gradually reduced from the needle point of the puncture needle body 1 to the needle tail, the outer diameter of the stopper 4 is smaller than the maximum inner diameter of the protective sleeve 2 and larger than the minimum inner diameter of the protective sleeve 2, and the puncture needle body 1 is positioned in the protective sleeve 2 by sliding in the protective sleeve 2 and limiting in the protective sleeve 2 by the stopper 4. After the pjncture needle is used and is accomplished, remove being connected between protective sleeve 2 and the main hose, then exert power pulling main hose and pjncture needle body 1, make it slide to main hose direction in protective sleeve 2, because stopper 4's external diameter is less than the internal diameter that protective sleeve 2 kept away from pjncture needle body 1 one end, after pjncture needle body 1 and main hose slip certain distance, stopper 4 is blocked in protective sleeve 2, pjncture needle body 1 and main hose no longer slide, this moment, the syringe needle of pjncture needle body 1 is inside protective sleeve 2, the state is as shown in figure 4, the syringe needle no longer exposes, reduce medical personnel, the risk that refuse handling transport personnel were stabbed risk and blood pollution.

In this embodiment, the main hose 3 is sleeved with the fixing platform 13 on the body far away from the puncture needle body 1, the fixing platform 13 and the end of the protection sleeve 2 far away from the puncture needle body 1 are detachably connected, and the distance from the fixing platform 13 to the needle point of the puncture needle body 1 is greater than the length of the protection sleeve 2. Through the detachable connection of the protective sleeve 2 and the fixed platform 13, the detachable connection between the protective sleeve 2 and the main hose is realized. When the puncture is finished, the protective sleeve 2 is connected with the fixed platform 13, and after the puncture is finished, the protective sleeve 2 is disconnected with the fixed platform 13, so that the puncture needle body 1 and the main hose can slide in the protective sleeve 2. The protective sleeve 2 and the fixed platform 13 can be detachably connected by a buckle, for example, a buckle piece which can be mutually buckled is respectively fixed on the protective sleeve 2 and the fixed platform 13; the outer wall of the protective sleeve 2 can be provided with a flange, the fixed platform 13 is provided with an annular groove matched with the flange, the flange is clamped in the annular groove, force is applied, the flange can move to the outside of the groove, and the time connection between the protective sleeve 2 and the fixed platform 13 is removed.

In order to further ensure the limiting effect, as shown in fig. 2, the inner wall of one end of the protective sleeve 2 far away from the needle head of the puncture needle body 1 is provided with a limiting flange 14. The limiting block can not slide to the position of the limiting flange under the general condition, and the inner diameter gradually reduced through the protective sleeve can play a limiting role. The inner diameter of the limiting flange is smaller than the minimum inner diameter of the protective sleeve, so that the situation that the limiting block slides out of the protective sleeve is completely avoided.

In some embodiments, as shown in fig. 2, a blood-sucking cotton layer 5 is fixed on the inner wall of the protection sleeve 2. When the puncture needle body 1 slides into the protective sleeve 2, the blood on the needle head of the puncture needle body 1 is absorbed by the blood absorption cotton layer 5.

In some embodiments, as shown in fig. 1, the protective sleeve 2 is symmetrically provided with needle wings 8 at both sides for the medical staff to hold and fix the puncture needle body during puncture.

The needle wing 8 is fixed with a transverse rubberized fabric 9 and a longitudinal rubberized fabric 10. As shown in fig. 1, the transverse adhesive plaster 9 can be folded and fixed above the needle wing 8, the edge of the transverse adhesive plaster 9 extends to the outside of the needle wing 8 in a semicircular shape, so that the transverse adhesive plaster 9 can be conveniently and transversely pulled out and fixed on the limb (as shown in fig. 3) on the internal fistula side of the patient, the longitudinal adhesive plaster 10 is folded and fixed below the transverse adhesive plaster 9, after the transverse adhesive plaster is fixed, the longitudinal adhesive plaster 10 is pulled away towards the needlepoint direction to form a U-shaped fixation (as shown in fig. 3) on the puncture needle body 1, and the internal fistula puncture needle is firmly and reliably fixed.

A hemodialysis patient needs to take blood regularly for testing, most of blood taking in a dialysis center at present is to connect an arterial puncture needle with an injector after internal fistula arteriovenous puncture and suck back blood, disconnect the injector from the arterial puncture needle, and inject the injector connecting needle head into a blood taking test tube; or after the arteriovenous internal fistula puncture needle punctures the internal fistula, blood flows into the main hose 3 from the tail end of the puncture needle, and the two open blood sampling methods have the possibility of pollution caused by outflow of the blood: blood drops are easy to spill and pollute when the puncture needle connecting port is exposed and the injector is disconnected. There is a possibility of needle exposure and needle stick injury as the syringe is connected with the needle and pushed into the main hose 3.

In the present embodiment, as shown in fig. 1 to 4, a blood collecting branch tube 6 is communicated with a side portion of the main tube 3, and a silicone seal 7 is disposed at a position of the blood collecting branch tube 6 away from the nozzle of the main tube 3. The blood taking needle can penetrate through the silica gel to seal 7 to form negative pressure blood taking, the blood taking needle is sealed 7 from the silica gel and is taken out, the blood on the blood taking needle is sealed 7 by the silica gel and is intercepted, after the blood taking needle is taken out, the silica gel seals 7 and restores the sealing state because of self elasticity, and the pollution caused by the outflow of blood in the blood taking branch pipe 6 and the blood dropping is reduced. The medicine can also be injected into the blood sampling branch pipe 6 by a syringe needle penetrating the silica gel seal 7.

The blood sampling branch pipe 6 is a hard PVC pipe. The blood sampling branch pipe adopts a hard PVC pipe to prevent the blood sampling needle or the medicine adding injector from penetrating through the pipe wall.

The main hose 3 is provided with a hemostatic clamp 11, the hemostatic clamp 11 is a common pipe clamp, and the hemostatic clamp 11 can control the speed and the on-off of the internal fistula blood. The end part of the main hose 3 far away from the puncture needle body 1 is covered with a sealing cap 12, and the sealing cap 12 is in threaded connection with the main hose 3. The end of the main hose 3 far away from the puncture needle body 1 can be connected with a hemodialysis pipeline for hemodialysis treatment, and when the treatment is not carried out, the sealing cap 12 can be screwed on the end part of the main hose 3 for sealing, so that the blood or the medicine is prevented from flowing out.

The use method of the internal fistula puncture needle of the embodiment comprises the following steps: initial state, protective sleeve 2 is connected with fixed platform 13, and the syringe needle of pjncture needle body 1 exposes outside protective sleeve 2 (as shown in fig. 1 and 2), and after pjncture needle body 1 punctured successfully patient's internal fistula artery and vein, will fix and pull open to both sides horizontal adhesive tape 9 on the needle wing 8, tear the anti-sticking film, paste and fix on patient's internal fistula side limbs (as shown in fig. 3), expose vertical adhesive tape 10 on the needle wing 8, pull open vertical adhesive tape 10 to the needle point direction, open certain angle and be the fixed internal fistula pjncture needle of U type (as shown in fig. 3). After the fixing is good, the sealing cap 12 on the main hose 3 is taken down, the pipe orifice of the main hose 3 far away from the puncture needle body 1 can be connected with a hemodialysis pipeline, the hemostatic clamp 11 is opened, blood is introduced and the blood is fed, and hemodialysis treatment is carried out. If blood is collected before treatment on the machine, the silica gel seal 7 at the tail end of the blood collection branch pipe 6 is disinfected and then is connected with a blood collection needle, and the blood collection needle punctures the silica gel seal 7 and collects blood by utilizing vacuum negative pressure. The blood taking needle is pulled out, and the silica gel seal 7 can prevent blood from dripping and splashing. Or through the silica gel seal 7 and the blood sampling branch pipe 6, the medicine is fed into the blood sampling branch pipe 6 after the injection needle of the medicine injector punctures the silica gel seal 7, and then enters the main hose 3 and can enter the body of a patient along with the flow of blood. After the dialysis treatment, tear horizontal adhesive tape 9 and vertical adhesive tape 10, extract pjncture needle body 1, remove protective case 2 and fixed platform 13's being connected, fixed platform 13 on 1 backshank direction pulling main hose 3 of pjncture needle body, and then drive main hose 3 and pjncture needle body 1 and slide in protective case 2, pulling stopper 4 is blocked to stopper 4 behind the certain internal diameter of protective case 2, at this moment, the syringe needle of pjncture needle body 1 is inside the safety cover (as shown in fig. 4), make the needle point can not expose outside.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the terms "this embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An internal fistula puncture needle is characterized by comprising a puncture needle body (1), a protective sleeve (2), a main hose (3) and a limiting block (4),

the tail of the puncture needle body (1) is connected with the main hose (3), the protective sleeve (2) is sleeved outside the puncture needle body (1) and the main hose (3), the puncture needle body (1) and the main hose (3) can slide in the protective sleeve (2), one end, far away from the puncture needle body (1), of the protective sleeve (2) is detachably connected with the main hose (3), and the distance from the detachable connection position of the main hose (3) and the protective sleeve (2) to the needle point of the puncture needle body (1) is greater than the length of the protective sleeve (2);

stopper (4) cover is established and is fixed on pjncture needle body (1) or pjncture needle body (1) with the junction of main hose (3), the internal diameter of protective case (2) reduces from pjncture needle body (1) needle point to the direction of backshank gradually, the external diameter of stopper (4) is less than the biggest internal diameter of protective case (2), be greater than the minimum internal diameter of protective case (2), pjncture needle body (1) slides and stopper (4) make the needle point be in through the spacing of sliding in protective case (2) and in protective case (2) stopper (4).

2. An internal fistula puncture needle according to claim 1, characterized in that a blood-sucking cotton layer (5) is fixed on the inner wall of the protection sleeve (2).

3. An internal fistula puncture needle according to claim 1, wherein a blood sampling branch pipe (6) is communicated with the side part of the main hose (3), and a silica gel seal (7) is arranged at the position of the blood sampling branch pipe (6) far away from the mouth of the main hose (3).

4. An endoluminal puncture needle according to claim 3, wherein the blood collection branch tube (6) is a rigid PVC tube.

5. An endoluminal puncture needle according to claim 1, wherein wings (8) are symmetrically provided on both sides of the protection sleeve (2).

6. An internal fistula puncture needle according to claim 5, characterised in that a transverse adhesive (9) and a longitudinal adhesive (10) are fixed to the needle wing (8).

7. An endoluminal puncture needle according to claim 3, wherein the main tube (3) is clipped with a hemostatic clip (11).

8. An internal fistula puncture needle according to claim 1 or 7, characterized in that the end of the main hose (3) remote from the puncture needle body (1) is capped with a sealing cap (12).

9. An internal fistula puncture needle according to claim 1, characterized in that a limit flange (14) is arranged on the inner wall of one end of the protection sleeve (2) far away from the needle head of the puncture needle body (1).

10. An internal fistula puncture needle according to claim 1, wherein a fixing platform (13) is sleeved and fixed on a tube body of the main hose (3) far away from the puncture needle body (1), the fixing platform (13) is detachably connected with one end of the protective sleeve (2) far away from the puncture needle body (1), and the distance from the fixing platform (13) to the needle point of the puncture needle body (1) is greater than the length of the protective sleeve (2).

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