Blood sampling heparin cap special for remaining needle

Abstract

The utility model discloses a blood sampling heparin cap special for an indwelling needle. A blood sampling heparin cap special for an indwelling needle comprises a shell, the interior of the shell is of a cavity structure, a partition plate is arranged on the inner wall of the shell, a drainage tube is arranged at the lower end of the partition plate, a round opening is formed in the upper end of the shell, a rubber plug is fixedly arranged at the lower end of the round opening, the upper end of the shell is connected with a cover body, a needle head is installed in the cover body, and the upper end of the needle head is a needle tail. The needle tail is located at the upper end of the cover body, and a sealing sleeve is arranged on the needle tail. According to the blood sampling heparin cap special for the indwelling needle, the needle head moves up and down by rotating the cap body, a worker is replaced to pierce a syringe into a rubber plug in a bare-handed mode, due to the fact that the needle head moves in the axial direction of the shell, the needle head is perpendicular to the surface of the rubber plug when pierced into the rubber plug, the needle head is prevented from swinging, and meanwhile the needle head is located in the cap body. The broken needle head is protected by the cover body, so that the possibility of hurting people by broken needle is reduced.

Description

Technical Field

[0001] This utility model relates to the field of indwelling needle technology, and in particular to a heparin cap for blood collection in indwelling needles. Background Technology

[0002] An indwelling needle, also known as an intravenous catheter, is an infusion tool mainly composed of a stainless steel needle core, a soft outer cannula, and a plastic needle hub. During operation, the stainless steel needle core and the soft outer cannula are inserted into the blood vessel together. Then, the stainless steel needle core is withdrawn, leaving only the soft outer cannula in the blood vessel for infusion. The advantage of this is that it can reduce the number of punctures, making it suitable for patients who need multiple infusions and avoiding the pain caused by repeated punctures.

[0003] The indwelling needle has a device called a heparin cap, named for the heparin injected into it through this device. Heparin prevents the blood flowing back into the needle from clotting and clogging the catheter. Figure 1 , 2 The image shows a heparin cap structure in the prior art, which mainly includes a shell and a rubber stopper located at the upper end of the shell. Workers use the needle of a syringe to puncture the rubber stopper and then inject heparin into the heparin cap.

[0004] Because the syringe needle is relatively thin and long, and the rubber stopper in the heparin cap has a certain degree of hardness, force is required when the needle pierces the rubber stopper. Inappropriate force can easily cause the needle to break.

[0005] Therefore, it is necessary to provide a heparin cap specifically for indwelling needles to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the existing technology, this utility model provides a special heparin cap for indwelling needles that can reduce the difficulty of the needle piercing into the rubber stopper and prevent the needle from breaking and injuring people.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A heparin cap for indwelling needle blood collection includes: a shell, the shell having a hollow internal structure, a partition on the inner wall of the shell, a drainage tube at the lower end of the partition, a circular opening at the upper end of the shell, a rubber stopper fixed at the lower end of the circular opening, a cover connected to the upper end of the shell, a needle installed inside the cover, the upper end of the needle being a needle tail, the needle tail being located at the upper end of the cover, and a sealing sleeve on the needle tail.

[0009] Preferably, the inner wall of the cover is provided with threads, and the outer wall of the shell is also provided with threads. The threads on the shell are adapted to the threads on the cover, and the two are threadedly connected.

[0010] Preferably, the cover is fixedly installed on the upper end of the housing, and the needle is inserted into and penetrates the rubber stopper.

[0011] Preferably, a rubber pad is provided at the lower end of the cover.

[0012] Preferably, the sealing sleeve on the needle tail is made of rubber, with the upper end of the sealing sleeve sealing the lower end opening, and is inserted and installed on the needle tail.

[0013] Preferably, the needle tail is threadedly connected to the sealing sleeve.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) This utility model achieves the up and down movement of the needle by rotating the cover, replacing the staff to insert the syringe into the rubber stopper by hand. Since the movement of the needle is along the axial direction of the shell, the needle is perpendicular to the surface of the rubber stopper when it is inserted into the rubber stopper, preventing the needle from swinging. At the same time, the needle is located in the cover, and the cover protects the needle after it breaks, reducing the possibility of the broken needle injuring people.

[0016] (2) By fixing the cover to the shell, the needle is always in the rubber stopper, which can reduce the wear of the rubber stopper caused by repeated punctures of the needle and extend its service life.

[0017] (3) The rubber sealing sleeve of this utility model can be quickly installed on the needle tail, reducing the chance of bacteria in the air entering. In addition, the needle tail and the sealing sleeve can be threaded together. The threaded sealing sleeve and the needle tail have a more reliable connection effect, preventing the sealing sleeve from falling off accidentally under the action of external force such as pushing, scraping, or squeezing. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a heparin cap for blood collection using existing technology;

[0019] Figure 2 A cross-sectional view of a heparin cap used in existing blood collection techniques;

[0020] Figure 3 This is a schematic diagram of the structure of the heparin cap for indwelling needles provided by this utility model;

[0021] Figure 4 A cross-sectional view of the heparin cap for indwelling needles provided by this utility model.

[0022] The corresponding names of the reference numerals in the attached drawings are: 101, shell; 102, partition; 103, drainage tube; 104, rubber stopper; 105, circular opening; 106, cover; 107, needle tip; 108, needle tail. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of the present invention include, but are not limited to, the following embodiments.

[0024] First embodiment:

[0025] like Figure 3-4 The image shown is a heparin cap for indwelling needles provided by this utility model. Figure 1-2 A prior art heparin cap includes: a shell 101, the shell 101 having a hollow internal structure, a partition 102 on the inner wall of the shell 101, a drainage tube 103 at the lower end of the partition 102, the drainage tube 103 being open at both its upper and lower ends, the drainage tube 103 being connected to a catheter to drain heparin from the shell 101 to other parts of the indwelling needle, a circular opening 105 at the upper end of the shell 101, the circular opening 105 being a circular opening, a rubber stopper 104 fixedly attached to the lower end of the circular opening 105, the side of the rubber stopper 104 contacting and being fixedly connected to the inner wall of the shell 101, and a worker using a syringe to puncture the rubber stopper 104 through the circular opening 105 to inject heparin into the shell 101. The improvements of this application are as follows: Figure 3-4 As shown, the inner wall of the cover 106 is threaded, and the outer wall of the housing 101 is also threaded. The threads on the housing 101 are compatible with the threads on the cover 106, and the two are threadedly connected. The needle 107 is installed in the center of the cover 106. The upper end of the needle 107 is the needle tail 108, which is located at the upper end of the cover 106. The needle tail 108 is provided with a sealing sleeve to seal the opening at the upper end of the needle tail 108. In use, first rotate the cover 106, and the cover 106 moves down along the outer wall of the housing 101. During this process, the needle 107 moves down synchronously with the cover 106 and pierces the rubber stopper 104. Then, remove the sealing sleeve on the needle tail 108, insert the syringe into the needle tail 108, and inject heparin into the housing 101. Finally, remove the syringe, put the sealing sleeve back on the needle tail 108, rotate the cover 106 to reset, and the needle 107 follows the cover 106 to disengage from the rubber stopper 104.

[0026] The needle 107 can be moved up and down by rotating the cover 106, which replaces the operator in inserting the syringe into the rubber stopper 104 by hand. Since the movement of the needle 107 is along the axial direction of the housing 101, the needle 107 is perpendicular to the surface of the rubber stopper 104 when it is inserted into the rubber stopper 104, which prevents the needle 107 from swinging. At the same time, the needle 107 is located inside the cover 106, and the cover 106 protects the needle 107 if it breaks, reducing the possibility of injury from a broken needle.

[0027] Second embodiment:

[0028] like Figure 4As shown, the cover 106 is fixedly installed on the upper end of the housing 101, and the needle 107 is inserted into and penetrates the rubber stopper 104. That is to say, the relative positions of the cover 106, the housing 101 and the needle 107 remain fixed and there is no change in state. The needle 107 is always located in the rubber stopper 104. When using, first remove the sealing cap at the end of the needle tail 108, then install the injection port of the syringe on the needle tail 108, inject heparin, and finally replace the sealing cap.

[0029] By fixing the cap 106 to the housing 101, the needle 107 is always located in the rubber stopper 104, which reduces the wear and tear on the rubber stopper 104 caused by the repeated puncture of the rubber stopper 104 by the needle 107 and extends its service life.

[0030] Third embodiment:

[0031] In order to improve the sealing of the connection between the cover 106 and the shell 101, a rubber pad is provided at the lower end of the cover 106. When the cover 106 is close to the upper end of the shell 101, the rubber pad located at the lower end of the cover 106 contacts the cover 106 and squeezes the shell 101. The rubber pad deforms and seals the gap between the cover 106 and the shell 101.

[0032] Fourth embodiment:

[0033] The sealing sleeve on the needle tail 108 is made of rubber. The upper end of the sealing sleeve is closed and the lower end is open. It is installed on the needle tail 108. The rubber sealing sleeve can be quickly installed on the needle tail 108, reducing the chance of bacteria in the air entering. In addition, the needle tail 108 and the sealing sleeve can be threaded together. The threaded connection between the sealing sleeve and the needle tail 108 has a more reliable connection effect, preventing the sealing sleeve from falling off due to external forces such as pushing, scraping, or squeezing.

[0034] Working principle: The needle 107 moves up and down by rotating the cover 106, allowing the operator to insert the syringe into the rubber stopper 104 by hand. Since the movement of the needle 107 is along the axial direction of the housing 101, the needle 107 is perpendicular to the surface of the rubber stopper 104 when it is inserted, preventing the needle 107 from swinging. At the same time, the needle 107 is located inside the cover 106, and the cover 106 protects the needle 107 if it breaks, reducing the possibility of injury from a broken needle.

[0035] The above embodiments are merely one of the preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any modifications or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but solve the same technical problem as this utility model, should be included within the scope of protection of this utility model.

Claims

1. A heparin cap for indwelling needle blood collection, characterized in that, include: The housing (101) has a hollow structure inside. The inner wall of the housing (101) is provided with a partition (102). The lower end of the partition (102) is a drainage tube (103). The upper end of the housing (101) is provided with a circular opening (105). The lower end of the circular opening (105) is fixedly provided with a rubber plug (104). The upper end of the housing (101) is connected to a cover (106). A needle (107) is installed inside the cover (106). The upper end of the needle (107) is a needle tail (108). The needle tail (108) is located at the upper end of the cover (106). A sealing sleeve is provided on the needle tail (108).

2. The heparin cap for indwelling needles according to claim 1, characterized in that, The inner wall of the cover (106) is provided with threads, and the outer wall of the shell (101) is also provided with threads. The threads on the shell (101) are compatible with the threads on the cover (106), and the two are threadedly connected.

3. The heparin cap for indwelling needles according to claim 1, characterized in that, The cover (106) is fixedly installed on the upper end of the housing (101), and the needle (107) is inserted into and penetrates the rubber stopper (104).

4. The heparin cap for indwelling needles according to claim 2, characterized in that, A rubber pad is provided at the lower end of the cover (106).

5. The heparin cap for indwelling needles according to claim 1, characterized in that, The sealing sleeve on the needle tail (108) is made of rubber, with the upper end of the sealing sleeve closing the lower end opening, and is inserted and installed on the needle tail (108).

6. The heparin cap for indwelling needles according to claim 1, characterized in that, The needle tail (108) is threadedly connected to the sealing sleeve.

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