A safe and closed negative pressure urine culture collection device

Abstract

The utility model discloses a safe and closed negative pressure urine culture collection device, which belongs to the field of medical device technology. The urine culture collection device includes a main collecting tube, a puncture needle, and a three-way valve. The three-way valve is detachably connected to the first negative pressure collection tube and the second negative pressure collection tube through the first collecting branch tube and the second collecting branch tube respectively; the first negative pressure collection tube and the second negative pressure collection tube are both provided with a puncture head, and the puncture head of the second negative pressure collection tube is provided with a sealing component for sealing the puncture port; the outer movable sleeve of the puncture needle is provided with a protective component. The present invention provides a sealing component in the puncture head of the second negative pressure collection tube, and the puncture port can be sealed when the second collecting branch tube is pulled out, thereby improving the airtightness of the second negative pressure collection tube and ensuring that the urine specimen is not contaminated; in addition, a protective sleeve is provided on the outer surface of the puncture needle, and the puncture needle is slidably connected to the protective sleeve, so that the puncture needle is not exposed during the puncture and needle removal process, thereby ensuring the safety of medical staff.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a safe and closed negative pressure urine culture collection device. Background Art

[0002] Urine culture refers to the cultivation of bacteria in normal urine. Normal urine is a sterile liquid, but there are various bacteria on the surface of the human urogenital tract. Therefore, urine culture should be performed in a sterile manner to eliminate interference from external bacteria and accurately detect whether there are bacteria in the urine. At present, when patients with indwelling urinary catheters collect urine culture specimens, they mainly use a syringe to directly extract the urine after disinfecting the latex end of the catheter. Since disinfectant is required when disinfecting the latex end of the catheter, a certain amount of disinfectant will be mixed in when the urine specimen is collected, causing contamination of the urine specimen. In addition, after the syringe is drawn, the urine needs to be transferred to a sterile bottle for culture. The transfer process may also cause contamination of the specimen, and it is impossible to achieve safe, closed and sterile operation throughout the process.

[0003] The utility model patent with publication number CN 215017966 U discloses a specimen collection device for patients with indwelling urinary catheters. The three-way valve is set to collect the front urine and mid-stream urine separately, and the mid-stream urine is collected by a negative pressure collection tube for urine culture. However, the following problems still exist when the collection device is used: (1) After the puncture needle punctures, the sealing performance of the puncture head is reduced. The negative pressure collection tube needs to be transferred after collecting the urine specimen. During the transfer process, external bacteria will enter the tube from the puncture port of the puncture head, causing contamination of the urine specimen; (2) Although a protective cover is provided on the collection needle, the protective cover needs to be removed before and after the collection needle punctures the catheter before puncturing and removing the needle. Therefore, during the puncture and removal process, the puncture needle poses a safety risk of injuring medical staff and causing occupational exposure. Summary of the invention

[0004] In view of the above-mentioned problems, the utility model aims to provide a safe and closed negative pressure urine culture retention device. By arranging a sealing component in the puncture head of the second negative pressure collection tube, the puncture port can be sealed when the second collecting branch tube is pulled out, thereby improving the airtightness of the second negative pressure collection tube and ensuring that the urine specimen is not contaminated. In addition, a protective cover is arranged outside the puncture needle, and the puncture needle is slidably connected to the protective cover. During the puncture and needle removal process, the puncture needle is not exposed, thereby ensuring the safety of medical staff.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A safe and closed negative pressure urine culture collection device comprises a main collecting tube, a puncture needle, a three-way valve, a first negative pressure collecting tube and a second negative pressure collecting tube; the first negative pressure collecting tube and the second negative pressure collecting tube are both provided with a puncture head, and the puncture head of the second negative pressure collecting tube is provided with a sealing component for sealing the puncture port.

[0007] Furthermore, the three-way valve is detachably connected to the first negative pressure collection tube and the second negative pressure collection tube through the first collecting branch tube and the second collecting branch tube respectively.

[0008] Furthermore, the sealing assembly includes a special-shaped groove provided in the puncture head, a sealing plate is rotatably provided in the special-shaped groove, and a puncture through hole matching the puncture end of the second collecting branch pipe is provided on the sealing plate.

[0009] Furthermore, a puncture groove for locating the puncture point is provided on the top of the puncture head corresponding to the second negative pressure collection cylinder.

[0010] Furthermore, a rotating shaft is provided on the top of the sealing plate, the rotating shaft rotates through the puncture head, and a rotating handle is provided at the end of the rotating shaft.

[0011] Furthermore, a limiting plate is sleeved outside the rotating shaft, two limiting square rods are arranged at the bottom of the limiting plate, and two groups of limiting square grooves matching the limiting square rods are arranged at the top of the puncture head.

[0012] Furthermore, the movable sleeve outside the puncture needle is provided with a protective component, and the protective component includes a protective sleeve sleeved outside the main collecting tube, and the puncture needle is slidably arranged in the protective sleeve.

[0013] Furthermore, a movable cylinder is sealed and slidably provided between the main collecting tube and the protective sleeve, and the puncture needle is installed at the front end of the movable cylinder.

[0014] The beneficial effect of the utility model is that compared with the prior art, the improvement of the utility model is that:

[0015] 1. The utility model connects the first collecting branch tube and the second collecting branch tube through a three-way valve, and the first collecting branch tube and the second collecting branch tube are respectively connected to the first negative pressure collecting tube and the second negative pressure collecting tube, so that the front urine containing disinfectant for disinfecting the catheter and bacteria that may be brought into the puncture process of the puncture needle can be collected separately from the mid-stream urine, so that only the sterile mid-stream urine is collected in the second negative pressure collecting tube, thereby improving the accuracy of urine culture and detection structure.

[0016] 2. The utility model provides a sealing assembly in the puncture head corresponding to the second negative pressure collection tube. The puncture through hole can be matched with the puncture point by rotating the sealing plate, so as to perform puncture of the second collection branch tube. When the sealing plate is rotated to stagger the puncture through hole and the puncture point, the sealing plate can seal the puncture point, thereby improving the sealing performance of the second negative pressure collection tube and further improving the sterility of the urine specimen. The position of the sealing plate can be limited by the mutual cooperation of the limiting square rod and the limiting square groove to avoid the rotation of the sealing plate during operation.

[0017] 3. The utility model provides a protective cover outside the puncture needle, and during the puncture and needle removal process, the protective cover is connected to the catheter, and the puncture needle is moved for puncture or needle removal, so that the puncture needle is located in the protective cover during the entire operation process, avoiding the puncture needle from injuring medical staff and causing professional exposure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the external structure of the urine culture collection device in Example 1 of the utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the puncture head corresponding to the second negative pressure collection cylinder in the first embodiment of the present utility model.

[0020] Figure 3 It is a structural schematic diagram of the rotating state of the sealing plate inside the puncture head corresponding to the second negative pressure collecting cylinder in the first embodiment of the utility model.

[0021] Figure 4 For this utility model Figure 3 Cross-section view in the AA direction.

[0022] Figure 5 For this utility model Figure 4 Schematic diagram of the structure after the middle sealing plate rotates.

[0023] Figure 6 This is a schematic diagram of the top structure of the puncture head corresponding to the second negative pressure collection cylinder in Example 1 of the utility model.

[0024] Figure 7 This is a schematic diagram of the external structure of the urine culture collection device in Example 2 of the present utility model.

[0025] Figure 8 This is a schematic diagram of the structure of the protection component in the second embodiment of the present utility model.

[0026] Fig. 9 This is a schematic diagram of the structure of the protection component when the puncture needle moves toward the front end in the second embodiment of the present utility model.

[0027] Among them: 1-main collecting tube, 2-puncture needle, 3-three-way valve, 4-first collecting branch tube, 5-second collecting branch tube, 6-first negative pressure collecting cylinder, 7-second negative pressure collecting cylinder, 8-puncture head, 801-puncture groove, 802-limiting square groove, 9-special-shaped groove, 10-sealing plate, 11-puncture through hole, 12-rotating shaft, 13-rotating handle, 14-limiting plate, 15-limiting square rod, 16-reset spring, 17-base, 18-protective cover, 19-movable cylinder, 20-connecting rod, 21-handle, 22-sliding through hole. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Embodiment 1:

[0030] See attached Figure 1-6 A safe and closed negative pressure urine culture and collection device shown in the figure comprises a main collecting tube 1, one end of the main collecting tube 1 is connected to a puncture needle 2, the other end of the main collecting tube 1 is connected to a three-way valve 3, the three-way valve 3 is connected to a first collecting branch tube 4 and a second collecting branch tube 5, the first collecting branch tube 4 and the second collecting branch tube 5 are respectively and detachably connected to a first negative pressure collecting tube 6 and a second negative pressure collecting tube 7, the first negative pressure collecting tube 6 is used to collect the front urine, and the second negative pressure collecting tube 7 is used to collect the middle urine. The first negative pressure collecting tube 6 and the second negative pressure collecting tube 7 are both provided with a puncture head 8, and the puncture head 8 of the second negative pressure collecting tube 7 is provided with a sealing assembly for sealing the puncture port. The puncture head 8 adopts a T-shaped structure, one end of which is inserted into the corresponding negative pressure collecting tube 7, and the other end is covered on the top of the corresponding negative pressure collecting tube 7. The front ends of the first collecting branch tube 4 and the second collecting branch tube 5 are conical structures, which can pierce the corresponding puncture head 8.

[0031] Specifically, the sealing assembly includes a special-shaped groove 9 provided in the puncture head 8, a sealing plate 10 is rotatably provided in the special-shaped groove 9, and a puncture through hole 11 matching the puncture end of the second collecting branch tube 5 is provided on the sealing plate 10. In order to cooperate with the sealing assembly, a puncture groove 801 for locating the puncture point is provided on the top of the puncture head 8, and the sealing plate 10 is rotated so that the puncture through hole 11 corresponds to the position of the puncture groove 801. At this time, the puncture end of the second collecting branch tube 5 is punctured from the position of the puncture groove 801, and the second collecting branch tube 5 can completely penetrate the puncture head 8 through the puncture through hole 11, thereby being inserted into the second negative pressure collecting tube 7, and the urine specimen is automatically collected under the negative pressure of the second negative pressure collecting tube 7. After the urine specimen is collected, the second collecting branch tube 5 is pulled out, and the sealing plate 10 is rotated so that the puncture through hole 11 is staggered with the puncture position, so that the sealing plate 10 can seal the puncture site, thereby improving the sealing and aseptic performance.

[0032] Optionally, in order to ensure the rotation and position limiting of the sealing plate 10, a rotating shaft 12 is bonded and fixed on the top of the sealing plate 10, and the rotating shaft 12 is sealed and rotates through the puncture head 8. A rotating handle 13 is fixed on one end of the rotating shaft 12 outside the puncture head 8, and a position limiting plate 14 is sleeved outside the rotating shaft 12. Two position limiting square rods 15 are bonded and fixed at the bottom of the position limiting plate 14, and a reset spring 16 is provided between the rotating handle 13 and the position limiting plate 14, and the reset spring 16 is sleeved outside the rotating shaft 12. Two groups of position limiting square grooves 802 matching the position limiting square rods 15 are provided on the top of the puncture head 8. It should be noted that the range in which the rotating shaft 12 drives the sealing plate 10 to rotate is between the two groups of position limiting square grooves 802. When the two limiting square rods 15 correspond to one group of limiting square grooves 802, the puncture through hole 11 corresponds to the position of the puncture groove 801. At this time, the limiting square rod 15 is inserted into the limiting square groove 802 to fix the position of the sealing plate 10, which is convenient for collecting urine samples. After the urine sample is collected, the limiting plate 14 is pulled upward to disengage the limiting square rod 15 from the limiting square groove 802, and then the rotating handle 13 is rotated to make the limiting square rod 15 correspond to the other group of limiting square grooves 802. At this time, the puncture through hole 11 is staggered with the puncture position, and the limiting plate 14 is released. Under the action of the reset spring 16, the limiting square rod 15 is inserted into the corresponding limiting square groove 802 to fix the position of the sealing plate 10. It should be noted here that the structure of the sealing plate 10 can also be a special-shaped structure. During the rotation of the rotating shaft 12, the sealing plate 10 can rotate in the special-shaped groove 9 with the center of the rotating shaft 12 as the center of the circle, and will not separate from the special-shaped groove 9.

[0033] Optionally, a base 17 is further provided at the bottom of the first negative pressure collection cylinder 6 and the second negative pressure collection cylinder 7 , and the first negative pressure collection cylinder 6 and the second negative pressure collection cylinder 7 can be supported by the base 17 .

[0034] When the urine culture collection device in this embodiment is in use, the latex end of the catheter is first disinfected, and then the puncture needle 2 is inserted into the sampling point of the catheter, and the three-way valve 3 is turned to connect the main collecting tube 1 with the first collecting branch tube 4. Under the action of the negative pressure in the first negative pressure collecting tube 6, the front urine passes through the main collecting tube 1 and the first collecting branch tube 4 into the first negative pressure collecting tube 6. The front urine will contain a certain amount of disinfectant and bacteria that may be generated during the puncture process of the puncture needle 2.

[0035] When the urine content in the first collecting branch tube 4 is 10ml to 15ml, the collected urine specimen is midstream urine, and the midstream urine flushes the main collecting tube 1, so that the urine specimen collected subsequently can be free from contamination. At this time, the three-way valve 3 is turned to connect the main collecting tube 1 with the second collecting branch tube 5, and under the negative pressure of the second negative pressure collecting tube 7, the midstream urine specimen is collected into the second negative pressure collecting tube 7. After the urine specimen is collected, the limiting plate 14 is pulled upward to disengage the limiting square rod 15 from the limiting square groove 802, and then the rotating handle 13 is turned to make the limiting square rod 15 correspond to another set of limiting square grooves 802. At this time, the puncture through hole 11 is staggered with the puncture position, and the limiting plate 14 is loosened. Under the action of the reset spring 16, the limiting square rod 15 is inserted into the corresponding limiting square groove 802 to fix the position of the sealing plate 10. It should be noted that before the urine sample is collected, the first collecting branch tube 4 and the second collecting branch tube 5 are respectively inserted into the first negative pressure collecting tube 6 and the second negative pressure collecting tube 7 , and the urine sample can be collected just by turning the three-way valve 3 .

[0036] After the urine sample is collected, the puncture needle 2 is pulled out from the catheter, and the second collecting branch tube 5 is pulled out from the second negative pressure collecting tube 7. The puncture ends of the puncture needle 2 and the second collecting branch tube 5 can be inserted into the puncture head 8 at the top of the first negative pressure collecting tube 6 to avoid injuring medical staff.

[0037] It should be noted that the front-end urine and mid-end urine in the present invention refer to the front-end urine and mid-end urine specimens corresponding to the collection process, rather than the front-end urine and mid-end urine during the human body's spontaneous defecation.

[0038] Embodiment 2:

[0039] On the basis of the first embodiment, a protective component is provided on the outer sleeve of the puncture needle 2, as shown in the attached Figure 7-9 shown.

[0040] Specifically, the protection assembly includes a protection sleeve 18, the protection sleeve 18 is bonded and sleeved outside the main collection tube 1, and a movable cylinder 19 is sealed and slidably provided between the main collection tube 1 and the protection sleeve 18, and the puncture needle 2 is installed at the front end of the movable cylinder 19. A connecting rod 20 is bonded and fixed to the outside of the movable cylinder 19, and the connecting rod 20 passes through the protection sleeve 18, and a handle 21 is bonded and fixed to one end of the connecting rod 20 located on the protection sleeve 18, and a sliding through hole 22 matching the connecting rod 20 is opened on the side wall of the protection sleeve 18.

[0041] When the protective assembly in this embodiment is used, the protective cover 18 is first put on the sterilized latex end of the urinary catheter, and then the handle 21 is moved, and the movable cylinder 19 and the puncture needle 2 are driven forward by the connecting rod 20, and the latex end of the urinary catheter is inserted to collect urine; after the urine specimen is collected, the handle 21 is moved in the opposite direction, the puncture needle 2 is pulled out from the urinary catheter, and then completely moved into the protective cover 18. Whether the puncture needle 2 is puncturing or pulling out, the puncture needle 2 is located inside the protective cover 18, which effectively prevents the puncture needle 2 from stabbing medical staff and causing professional exposure.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A safe and closed negative pressure urine culture collection device, comprising a main collection tube (1), a puncture needle (2), a three-way valve (3), a first negative pressure collection tube (6) and a second negative pressure collection tube (7); characterized in that: The first negative pressure collection tube (6) and the second negative pressure collection tube (7) are both provided with a puncture head (8), and a sealing component for sealing the puncture port is provided inside the puncture head (8) of the second negative pressure collection tube (7).

2. A safe and closed negative pressure urine culture collection device according to claim 1, characterized in that: The three-way valve (3) is detachably connected to the first negative pressure collection tube (6) and the second negative pressure collection tube (7) via the first collecting branch tube (4) and the second collecting branch tube (5).

3. A safe and closed negative pressure urine culture collection device according to claim 2, characterized in that: The sealing assembly comprises a special-shaped groove (9) provided in the puncture head (8), a sealing plate (10) being rotatably arranged in the special-shaped groove (9), and a puncture through hole (11) matching the puncture end of the second collecting branch tube (5) being provided on the sealing plate (10).

4. A safe and closed negative pressure urine culture collection device according to claim 3, characterized in that: A puncture groove (801) for locating a puncture point is provided on the top of the puncture head (8) corresponding to the second negative pressure collection cylinder (7).

5. A safe and closed negative pressure urine culture collection device according to claim 3, characterized in that: A rotating shaft (12) is provided at the top of the sealing plate (10), the rotating shaft (12) rotates to penetrate the puncture head (8), and a rotating handle (13) is provided at the end of the rotating shaft (12).

6. A safe and closed negative pressure urine culture collection device according to claim 5, characterized in that: A limiting plate (14) is sleeved outside the rotating shaft (12), two limiting square rods (15) are provided at the bottom of the limiting plate (14), and two groups of limiting square grooves (802) matching the limiting square rods (15) are provided at the top of the puncture head (8).

7. A safe and closed negative pressure urine culture collection device according to claim 1, characterized in that: The puncture needle (2) is provided with a protective assembly on its outer movable sleeve, the protective assembly comprising a protective sleeve (18) sleeved on the outside of the main collecting tube (1), and the puncture needle (2) is slidably arranged in the protective sleeve (18).

8. A safe and closed negative pressure urine culture collection device according to claim 7, characterized in that: A movable cylinder (19) is provided between the main collecting tube (1) and the protective sleeve (18) in a sealed and slidable manner, and the puncture needle (2) is mounted at the front end of the movable cylinder (19).

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