TWM589042U - Improved structure of triple-lumen catheter - Google Patents

Abstract

This creation provides a three-cavity catheter structure improvement, including a three-chamber fork tube with a first channel, a second channel and a third channel; a body catheter connected to the three-chamber fork tube, the body catheter has A fourth channel, a fifth channel, and a sixth channel, the first channel communicates with the fourth channel, the second channel communicates with the fifth channel, the third channel communicates with the sixth channel, and the The fourth channel communicates with the fifth channel; a telescopic member is disposed at an end adjacent to the main body duct away from the three-chamber fork tube, the telescopic member communicates with the sixth channel; and a leak-proof infusion joint is connected to the The first channel is away from one end of the fourth channel.

Description

Improvement of three-cavity catheter

This creation is about a urinary catheter device, especially a urinary catheter structure that can use a syringe to directly draw urine and less water into the water ball to increase the accuracy.

Generally, in clinical practice, a two-lumen catheter is often used. If a patient needs lavage, the three-lumen catheter 100' (as shown in Figure 1) needs to be replaced, which will not only increase the patient's discomfort, but change the catheter The tube also increases the risk of infection. After placing the three-lumen catheter 100', the urine will leak out of the lavage hole 110', which is also one of the risks of urinary tract infection.

Common causes of catheter placement are: (1) acute urinary retention or urinary tract obstruction or neurobladder (2) need to accurately monitor urine output (3) need to be fixed for a long time, such as severe thoracic or spine trauma or pelvic fracture (4) Urinary bladder irrigation or drug indwelling treatment is required (5) Due to the need for surgery (6) Avoiding wound healing (7) Increasing patient comfort, such as: patients with end-stage cancer, generally two-cavity catheters will be selected first for clinical reasons because of the three-cavity catheter The difference between the cost of the catheter 100' and the two-cavity catheter, followed by the three-cavity catheter 100' is mainly used for bladder lavage, drug indwelling treatment and pressurized hemostasis after urinary tract surgery. When using a three-lumen catheter 100', the biggest problem is that there is no continuous bladder lavage at the end connected to the bladder irrigation (irrigation hole 110'). There are often urine leaks. Clinically, needle caps or rubber bands are often used. If the sterility is not done properly, it may cause the outer surface of the catheter (outside the lumen) to enter the bladder through the urethra, resulting in urinary catheter infection.

Research indicates that the incidence of urinary tract infection will increase by 3 to 10% for each additional day of indwelling catheter, and the infection rate of patients with catheter indwelling for 2 to 10 days is as high as 26%; the infection rate is almost 100% for more than one month. Urinary tract infections are mainly gram-negative bacteria in the perineum or anus. The infections are caused by the upward movement of the urethra. The infection depends on the bladder's ability to urinate, the antibacterial ability of the bladder mucosa and urine, the amount of bacteria that enters, and the adhesion of the bacteria themselves Capacity and toxicity. Urinary tract infection is the most common bacteria Escherichia coli (E.coli), followed by Candida albicans (Candida albicans), Klebsiella pneumoniae (Klebsiellapneumoniae), feces enterococci (Enterococcusfaecium), other Candida (Candida species), Pseudomonas aeruginosa , etc.

The main risk factors include long indwelling time, female (short urethra), older age, maintenance of a closed drainage system, and serious underlying diseases. In addition to the possibility of infection, the placement of a catheter may also cause urethritis, urethral stricture, hematuria, and bladder rupture. According to the US Centers for Disease Control and Infection Care Guidelines and the Medical Policy Council, it has designed empirical medicine to prevent catheter-related urinary tract infections Combined care strategy, with the contents of "washing hands before and after care", "assess the necessity of urinary catheter retention daily", "maintaining a closed and smooth drainage system", "appropriate fixation of urine bags", "placement using sterile technology", There are 7 strategies including "urinary catheter care" and "warning or reminder system" to improve CAUTI (catheter-associated urinary tract infection).

In view of the aforementioned problems, the creator has worked hard on research and development, so the main purpose of this creation is to provide a three-cavity catheter structure improvement, which can not only reduce the needle penetration rate, but also more accurately draw urine, and It is known to solve the shortcomings of urethral catheters (seepage of urine, seepage of lavage solution) tied with a needle cover or a rubber band to maintain the tightness of the urinary catheter and increase the convenience of use.

In order to achieve the above purpose, the author provides a three-cavity catheter structure, including a Three-chamber fork tube with a first channel, a second channel and a third channel; a body catheter connected to the three-chamber fork tube, the body catheter has a fourth channel, a fifth channel and a sixth channel , The first channel communicates with the fourth channel, the second channel communicates with the fifth channel, the third channel communicates with the sixth channel, and the fourth channel communicates with the fifth channel; a telescopic element, Located at an end adjacent to the main body conduit away from the three-chamber fork tube, the telescopic member communicates with the sixth channel; and a leak-proof infusion joint connects the end of the first channel away from the fourth channel.

In some embodiments, the first channel has a first liquid inlet, the fourth channel has a first liquid outlet, and the first liquid inlet is disposed at an end of the first channel away from the fourth channel It is provided and connected to the leak-proof infusion joint, and the first liquid outlet is provided at the end of the fourth channel away from the first channel.

In some embodiments, the second channel has a second liquid outlet, the fifth channel has a second liquid inlet, and the second liquid outlet is disposed at an end of the second channel away from the fifth channel The second liquid inlet is provided at an end of the fifth channel away from the second channel, and the second liquid inlet is in communication with the first liquid outlet.

In some embodiments, the third channel has a third liquid inlet, the sixth channel has a third liquid outlet, and the third liquid inlet is disposed at an end of the third channel away from the sixth channel , The third liquid outlet is provided at an end of the sixth channel away from the third channel, the third liquid outlet is in communication with the telescopic member, the third liquid outlet is connected to the first liquid outlet and the second The liquid inlet is isolated.

In some embodiments, an end of the main body catheter remote from the three-chamber fork tube is provided with an irrigation hole, so that the telescopic member is located between the three-chamber fork tube and the irrigation hole.

In some embodiments, when in use, the lavage hole and the telescoping member are located in the bladder.

In some embodiments, the end of the leak-proof infusion joint and the first channel away from the fourth channel is formed into an integrated structure by injection molding.

In some embodiments, a diameter of the fifth channel is slightly larger than a diameter of the fourth channel, and a diameter of the second channel is slightly larger than a diameter of the first channel.

In this way, the empty syringe is directly connected to the leak-proof infusion connector (that is, the needleless connector), which can not only draw urine for examination, but also connect the bladder lavage solution, and can also avoid the leakage of the three-cavity catheter In case of urine, keep the catheter closed.

100‧‧‧Three-cavity catheter structure

1‧‧‧Three chamber fork tube

11‧‧‧ First channel

12‧‧‧Second channel

13‧‧‧The third channel

14‧‧‧First liquid inlet

15‧‧‧Second liquid outlet

16‧‧‧The third liquid inlet

2‧‧‧Main catheter

21‧‧‧The fourth channel

22‧‧‧The fifth channel

23‧‧‧Sixth channel

24‧‧‧First liquid outlet

25‧‧‧Second liquid inlet

26‧‧‧The third liquid outlet

27‧‧‧Immersion hole

3‧‧‧Telescopic parts

4‧‧‧Leakproof infusion connector

200‧‧‧ Bladder

100’‧‧‧Three-cavity catheter

110’‧‧‧ irrigation hole

Figure 1 is a schematic plan view of a conventional three-lumen catheter.

Figure 2 is a schematic plan view showing the structure of the three-cavity catheter.

Figure 3 is a schematic perspective view showing the structure of the three-cavity catheter in this creation.

Figure 4 is a perspective schematic view of the three-cavity catheter structure of the present invention injecting saline into the bladder through the perfusion hole and then discharging it through the urination hole.

Figure 5 is a perspective schematic view of the creation of the three-cavity catheter structure injecting water into the water injection hole to expand the water ball.

Figure 6 is a schematic diagram of the three-cavity catheter structure connected to the bladder.

Regarding the technical means by which this creation achieves the above-mentioned objectives, the following implementation types and illustrations are described in detail below, so as to understand and agree with them in depth.

Please refer to FIG. 2 and FIG. 3, which shows the creation of a three-lumen catheter structure 100, including a three-lumen fork tube 1, a main catheter 2, a telescopic member 3 and a leak-proof infusion connector 4.

The three-chamber fork tube 1 has a first channel 11, a second channel 12, and a third channel Road 13.

The main body catheter 2 is connected to the three-lumen fork tube 1, and the main body catheter 2 has a fourth channel 21, a fifth channel 22, and a sixth channel 23, the first channel 11 communicates with the fourth channel 21, and the second channel 12 communicates with the first The five channels 22 communicate, the third channel 13 communicates with the sixth channel 23, and the fourth channel 21 communicates with the fifth channel 22. In some embodiments of the present creation, a diameter of the fifth channel 22 is slightly larger than a diameter of the fourth channel 21, and a diameter of the second channel 12 is slightly larger than a diameter of the first channel 11.

In some embodiments of this creation, please refer to FIG. 3, the first channel 11 has a first liquid inlet 14, the fourth channel 21 has a first liquid outlet 24, and the first liquid inlet 14 is provided The first channel 11 is provided at an end away from the fourth channel 21 and connected to the leak-proof infusion connector 3, and the first liquid outlet 24 is provided at the end of the fourth channel 21 away from the first channel 11.

In some embodiments of this creation, please refer to FIG. 3, the second channel 12 has a second liquid outlet 15, the fifth channel 22 has a second liquid inlet 25, and the second liquid outlet 15 is provided At the end of the second channel 12 away from the fifth channel 22, the second liquid inlet 25 is provided at the end of the fifth channel 22 away from the second channel 12, and the second liquid inlet 25 communicates with the first liquid outlet 24.

In some embodiments of this creation, please refer to FIG. 3, the third channel 13 has a third liquid inlet 16, the sixth channel 23 has a third liquid outlet 26, and the third liquid inlet 16 is provided At the end of the third channel 13 away from the sixth channel 23, the third liquid outlet 26 is provided at the end of the sixth channel 23 away from the third channel 13, the third liquid outlet 26 communicates with the telescopic member 3, and the third liquid outlet 26 is isolated from the first liquid outlet 24 and the second liquid inlet 25.

In addition, the telescopic element 3 can be a flexible telescopic balloon, which can form a spherical shape when inflated, but this creation is not limited to this; the telescopic element 3 is sleeved adjacent to the main body catheter 2 and away from the third At one end of the lumen fork tube 1, the telescopic member 3 is in communication with the sixth channel 23.

Please refer to FIG. 2 and FIG. 3, the end of the main body catheter 2 away from the three-chamber fork tube 1 is provided with an irrigation hole 27, so that the telescopic member 3 is positioned between the three-chamber fork tube 1 and the irrigation hole 27.

Please refer to FIG. 6, in the use state, the irrigation hole 27 and the telescopic member 3 are located in the bladder 200.

The leak-proof infusion connector 4 is connected to the end of the first channel 11 away from the fourth channel 21, and the leak-proof infusion connector 4 and the end of the first channel 11 away from the fourth channel 21 are formed into an integrated structure by injection molding; The leak-proof infusion connector 3 is connected to the first liquid inlet 14 and controls the sealing and opening of the liquid between the first channel 11 and the syringe (such as a syringe) or infusion set (not shown) with an automatic rebound mechanism.

For the above-mentioned usage status, please refer to Figure 4 in conjunction with Figures 2 and 6 as well as the arrow direction in Figure 4; syringes (such as syringes) or infusion sets (not shown) pass through to prevent leakage Infusion connector 3, inject saline from the first liquid inlet 14 (that is, the perfusion hole), through the first channel 11, the fourth channel 21, and the lavage hole 27 (as shown in Figure 2), and finally to the bladder 200 for lavage; the urine in the bladder 200 (as shown in Figure 6) is passed through the second liquid inlet 25, the fifth channel 22, the second channel 12 together with the saline solution, and finally passes through the second liquid outlet 15 (that is, the urination hole) and discharged into a urine bag (not shown) to achieve the effect of reducing the needle sticking rate, more accurately drawing urine, and maintaining the tightness of the urinary catheter.

For the use status described, please refer to Figure 5 again with Figure 6 and refer to the direction of the arrow in Figure 5; inject the water from the third liquid inlet 16 (that is, the water injection hole of the water ball). Then through the third channel 13, the sixth channel 23, the third liquid outlet 26, and finally to the telescopic member 3, the telescopic member 3 is inflated in the bladder 200 with water.

With the above structure, not only can the needle penetration rate be reduced, but also the urine can be drawn more accurately, and the shortcomings of the three-cavity catheter (urinary oozing, oozing irrigation Wash solution) to solve, maintain the tightness of the urinary tube, and increase the convenience of use.

100‧‧‧Three-cavity catheter structure

1‧‧‧Three chamber fork tube

11‧‧‧ First channel

12‧‧‧Second channel

13‧‧‧The third channel

14‧‧‧First liquid inlet

15‧‧‧Second liquid outlet

16‧‧‧The third liquid inlet

2‧‧‧Main catheter

21‧‧‧The fourth channel

22‧‧‧The fifth channel

23‧‧‧Sixth channel

24‧‧‧First liquid outlet

25‧‧‧Second liquid inlet

26‧‧‧The third liquid outlet

27‧‧‧Immersion hole

3‧‧‧Telescopic parts

4‧‧‧Leakproof infusion connector

Claims (8)

A three-lumen urinary catheter structure includes: a three-lumen fork tube with a first channel, a second channel and a third channel; a body catheter connected to the three-lumen fork tube, the body catheter has a fourth A channel, a fifth channel, and a sixth channel, the first channel communicates with the fourth channel, the second channel communicates with the fifth channel, the third channel communicates with the sixth channel, and the fourth channel Communicates with the fifth channel; a telescopic element is disposed at an end adjacent to the main body duct away from the three-chamber fork tube, the telescopic element communicates with the sixth channel; and a leak-proof infusion joint is connected to the first channel One end away from the fourth channel. The three-cavity catheter structure according to claim 1, wherein the first channel has a first liquid inlet, the fourth channel has a first liquid outlet, and the first liquid inlet is provided at the first A channel is provided at an end away from the fourth channel and connected to the leak-proof infusion joint, and the first liquid outlet is provided at an end of the fourth channel away from the first channel. The three-cavity catheter structure according to claim 2, wherein the second channel has a second liquid outlet, the fifth channel has a second liquid inlet, and the second liquid outlet is provided at the first The second channel is away from the end of the fifth channel, the second liquid inlet is disposed at the end of the fifth channel away from the second channel, and the second liquid inlet is in communication with the first liquid outlet. The three-chamber catheter structure according to claim 3, wherein the third channel has a third liquid inlet, the sixth channel has a third liquid outlet, and the third liquid inlet is provided in the third The third channel is away from the end of the sixth channel, the third liquid outlet is provided at the end of the sixth channel away from the third channel, the third liquid outlet is in communication with the telescopic member, and the third liquid outlet is in contact with the The first liquid outlet and the second liquid inlet are isolated. The three-lumen urinary catheter structure according to claim 1, wherein the main body catheter is away from the three-lumen fork tube One end is provided with a irrigation hole, so that the telescopic member is located between the three-chamber fork tube and the irrigation hole. The three-lumen urinary catheter structure according to claim 5, wherein the lavage hole and the telescoping member are located in the bladder when in use. The three-cavity urinary catheter structure according to claim 1, wherein the end of the leak-proof infusion joint and the first channel away from the fourth channel is formed into an integrated structure by injection molding. The three-lumen catheter structure according to claim 1, wherein a diameter of the fifth channel is slightly larger than a diameter of the fourth channel, and a diameter of the second channel is slightly larger than that of the first channel One diameter.

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