CN209734726U

CN209734726U - Activation-free contact-free catheter

Info

Publication number: CN209734726U
Application number: CN201821674844.4U
Authority: CN
Inventors: 敬树林; 潘玉章; 高帅; 刘政; 漆辉刚; 武迪蒙
Original assignee: Chengdu Xin'an Innovative Medical Technology Co Ltd
Current assignee: Chengdu Xin'an Innovative Medical Technology Co Ltd
Priority date: 2018-10-16
Filing date: 2018-10-16
Publication date: 2019-12-06
Anticipated expiration: 2028-10-16

Abstract

The utility model discloses an activation-free contact-free catheter, which comprises a front joint, a rear joint, a contact-free tubular membrane and a catheter, wherein the rear joint is formed by at least partially sleeving a shell and a drainage joint together inside and outside; the catheter is positioned in the contact-free cylindrical membrane, one end of the catheter is connected to the inner port of the drainage connector of the rear connector, the other end of the catheter is free, and the free end of the catheter is close to the outer port of the front connector when the contact-free cylindrical membrane is straightened; the surface of the catheter is provided with an ultra-smooth coating, and the contact-free cylindrical membrane is filled with activation-free liquid. Compared with the common catheter, the catheter has the advantages of cross infection prevention, no need of activating a coating and no contact.

Description

Activation-free contact-free catheter

Technical Field

The utility model relates to a medical product technical field, more specifically, the utility model relates to an exempt from to activate and exempt from to contact catheter.

Background

patients who have difficulty in urination or who need surgery for a long time and cannot urinate spontaneously need to urinate using a urinary catheter. The catheter device on the market at present mainly comprises drainage bag, catheter, and medical staff brings very big misery to patient at the intubate in-process because the existence of catheter shaft frictional force, makes patient produce psychological shadow when carrying out the intubate. Under the existing technical conditions, when a plurality of catheter products are operated by medical workers, the medical workers need to take sterile gloves and also need to disinfect a contacted device, and a catheter body of the catheter needs to be smeared with a lubricant for relieving the pain of a patient. Some ultra-smooth catheters have also been studied in the field, and the surface of the ultra-smooth catheter is provided with an ultra-smooth coating, but before use, the ultra-smooth coating needs to be activated by using normal saline or sterile water (the general activation time is 30s), then the catheter is held by hand to carry out intubation catheterization operation on a patient, and in the process, the product is undoubtedly exposed in the environment, so that the product pollution rate is greatly increased, great infection risk is brought to the patient, and meanwhile, in the process, the workload of medical care personnel is greatly increased, and psychological burden is also increased to the intubation personnel.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides an exempt from to activate and exempt from to contact the catheter to it lubricates and activates the big problem of pollution rate that leads to expect to solve before the catheter uses.

In order to solve the technical problem, the utility model adopts the following technical scheme:

The utility model provides a pair of technical scheme is:

An activation-free contact-free catheter comprises a front connector, a rear connector, a contact-free cylindrical membrane and a catheter, wherein the rear connector is formed by at least partially sleeving a shell and a drainage connector together inside and outside, two ends of the contact-free cylindrical membrane are respectively connected to the shell of the rear connector and the front connector, and the front connector can be in sealing connection with the rear connector to enable the activation-free contact-free catheter to form a closed ring; the catheter is positioned in the contact-free cylindrical membrane, one end of the catheter is connected to the inner port of the drainage connector of the rear connector, the other end of the catheter is free, and the free end of the catheter is close to the outer port of the front connector when the contact-free cylindrical membrane is straightened; the surface of the catheter is provided with a super-smooth coating, and the contact-free cylindrical membrane is filled with activation-free liquid.

Above-mentioned exempt from to activate and exempt from to contact catheter, its front connector are the tubulose, set up the opening on the body, exempt from to contact the tube-shape membrane and extend and fix in the front connector of opening front end, with front connector and rear joint separation back, user's finger is located the front connector can expose when making it connect the direction to the back slip by pinching the front connector at the opening part the catheter.

The front end part of the front connector of the activation-free contact-free urinary catheter is matched with the tail end part of the drainage connector in shape, so that the front connector and the drainage connector form a tight connection structure when being inserted into the drainage connector.

Above-mentioned exempt from to activate and avoid contacting catheter, the shell surface of back joint sets up the cyclic annular bead or the bump that are used for increasing frictional force, and when setting up the bead, the maximum diameter of the bead that is close to back joint both ends is greater than the maximum diameter of the bead in back joint middle part.

The external side surface of the front end part of the front joint of the activation-free contact-free catheter is in a circular truncated cone shape.

Some ultra-lubricious coatings and activation-free liquids matched thereto have been developed in the art, and therefore the ultra-lubricious coatings and activation-free liquids for use with activation-free contact-free catheters described herein can be selected from the prior art. If the ultra-smooth coating used for the non-activation non-contact catheter is polyvinylpyrrolidone, the non-activation liquid used for the non-activation non-contact catheter can be polyvinylpyrrolidone aqueous solution. The ultra-slip coating and the activation-free liquid are not limited to this solution.

The utility model provides a pair of technical scheme is:

The front end of the front joint of the activation-free contact-free catheter is expanded to enable the external shape of the activation-free contact-free catheter to be similar to that of a handheld flashlight, the expanded part of the front joint is composed of a hard inner-layer tube and a soft outer-layer tube, the inner-layer tube is provided with internal threads, and other parts of the front joint are only made of the same material as the soft outer-layer tube.

The activation-free contact-free catheter is characterized in that a shell of a rear connector of the activation-free contact-free catheter is made of soft materials, a drainage connector of the rear connector is made of hard materials, an exposed part of the drainage connector is provided with external threads, and the drainage connector and an inner pipe of a front connector are matched through threads to enable the drainage connector and the inner pipe to be connected.

The hard inner layer pipe or the drainage joint of the front joint and the rear joint can be made of PP (polypropylene) materials, the soft outer layer pipe or the shell can be made of TPU (thermoplastic polyurethane elastomer) materials or silica gel, but the materials of the front joint and the rear joint are not limited to the two materials, so long as the catheter is suitable for the inner layer material, the inner layer material has certain hardness, the front joint and the rear joint are conveniently connected and fixed into a ring shape, the outer layer material has the characteristic of being capable of being pinched flat when being pinched by fingers, and the front joint is convenient to operate and moves towards the rear joint.

The non-activation non-contact catheter is characterized in that a protrusion, a groove or a special-shaped structure is arranged on the outer surface of a drainage connector of a rear connector, a groove, a protrusion or a special-shaped structure is also arranged on the inner surface of a shell of the rear connector, and the drainage connector of the rear connector and the protrusion, the groove or the special-shaped structure on the contact surface of the shell are matched in shape to enable the drainage connector and the shell to be fastened together. The inner and outer layer structure requires to be closely linked, and through setting up recess, arch or special-shaped structure and matching at the contact surface, the drainage that can guarantee the back joint connects and the shell is connected for stable overall structure.

Likewise, the above-described ultra-lubricious coating for use with an activation-free contact-free urinary catheter may be polyvinylpyrrolidone, the activation-free liquid may be an aqueous solution of polyvinylpyrrolidone, and this choice of ultra-lubricious coating and activation-free liquid is not exclusive.

Compared with the prior art, the utility model discloses following beneficial effect has at least: the utility model provides an activation-free contact-free catheter for a catheter user, compared with the common catheter, the activation-free contact-free catheter has the advantages of preventing cross infection, not needing an activation coating and avoiding contact.

Drawings

Fig. 1 is a schematic view of an activation-free contact-free urinary catheter of example 1 looped end-to-end.

Fig. 2 is a schematic view of the activation-free, contact-free urinary catheter deployment straightening of example 1.

Fig. 3 is a perspective view of a front joint of embodiment 1.

FIG. 4 is a cross-sectional view of a front joint according to example 1.

Fig. 5 is a perspective view of a rear joint of example 1.

FIG. 6 is a cross-sectional view of a rear joint of example 1.

Fig. 7 is a schematic view of the activation-free contact-free urinary catheter of example 2 looped end-to-end.

Fig. 8 is a schematic view of activation-free contact-free catheter deployment straightening of example 2.

FIG. 9 is a perspective view of a front joint according to example 2.

FIG. 10 is a sectional view of a front joint according to example 2.

Fig. 11 is a perspective view of a rear joint of embodiment 2.

FIG. 12 is a sectional view of a rear joint in example 2.

Fig. 13 is a schematic view of the use state of the activation-free contact-free urinary catheter of example 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in figure 1, the activation-free contact-free catheter comprises a front connector 1, a rear connector 2, a contact-free cylindrical membrane 3 and a catheter 4. The rear joint is of a double-layer structure and is formed by sleeving the shell 5 and the drainage joint 6 at least partially inside and outside. As shown in fig. 1, most of the drain fitting 6 is inside the housing 5. The contact-free cylindrical membrane 3 is soft in texture, two ends of the contact-free cylindrical membrane are respectively connected to the shell 5 of the rear connector and the front connector 1, and the front connector 1 can be in sealing connection with the rear connector 2 so that the activation-free contact-free catheter forms a closed ring. Therefore, when the contact-free cylindrical film is filled with the liquid, the annular closing body can prevent the liquid from leaking out, and the liquid can circulate in the ring. The catheter 4 is positioned in the contact-free cylindrical membrane 3 and protected by the contact-free cylindrical membrane, so that medical staff or a catheter user can not directly contact the catheter tube body inside when holding the medical device. One end of the catheter is connected to the inner port 7 of the drainage connector of the rear connector, the other end is free and not fixedly connected, and when the contact-free cylindrical membrane is straightened, as shown in fig. 2, the free end of the catheter is close to the outer port 8 of the front connector. Therefore, when the catheter is inserted initially, the end part of the catheter can be exposed only by moving the front connector a little distance to the rear connector, and the catheter can be conveniently inserted into the urethra of a user. In order to enable the catheter body to have the super-smooth performance, reduce the friction between the catheter and the urethra and relieve the pain of a user, the surface of the catheter is coated with the super-smooth coating, or the super-smooth coating is combined on the surface in a chemical bond combination mode, so that the contact-free cylindrical membrane is filled with the activation-free liquid. The ultra-smooth coating is in direct contact with the activation-free liquid and in long-term contact. As shown in fig. 3, the main structure of the front connector is tubular, the tube body is provided with an opening 9, and the contact-free cylindrical membrane 3 extends and is fixed in the front connector at the front end of the opening 9, so that the contact-free cylindrical membrane and the catheter tube body inside can be seen at the opening 9. In order to facilitate the holding of the front joint, the opening 9 is provided with a pair, and the two ends of the opening are provided with certain radian, so that the front joint can be conveniently held by the forefinger and the thumb. After the front connector 1 and the rear connector 2 are separated, the user's fingers are positioned at the opening and pinch the front connector to enable the front connector to be exposed when the front connector slides towards the rear connector.

As shown in fig. 4, the outer side surface of the tip portion of the front joint is in the shape of a truncated cone. And thus has a trapezoidal cross-section, and is configured in such a manner that the front connector can be easily inserted into the rear connector for connection. As can be seen from fig. 6, the front end of the front connector is matched with the rear end of the drainage connector in shape and has a trapezoidal cross section, so that the front connector and the drainage connector form a tight connection structure when inserted into the drainage connector. As shown in fig. 5, the outer shell surface of the rear joint is provided with annular ribs 10 or protrusions for increasing friction, and when the ribs are provided, the maximum diameter of the ribs near the two ends of the rear joint is larger than that of the ribs in the middle of the rear joint. Therefore, the surface of the rear joint formed by arranging all the convex edges has radian and larger friction force, so that the rear joint and the front joint can be conveniently connected or disconnected by holding, and the rear joint is not difficult to operate because the surface is smooth.

the activation-free contact-free catheter is in a ring-shaped closed state before use and is wrapped by an opaque outer package such as an opaque bag, so that a user can carry the activation-free contact-free catheter with the user without revealing privacy. When the user or the medical staff uses the medical appliance, the following operation modes can be adopted: left hand and right hand are handheld preceding respectively, the rear joint, slightly power is pulled to both sides and is pulled out the front connector, fall in the front connector end and exempt from activation liquid, will connect the urine bag to be connected on the rear joint, the front end of catheter body is exposed to the sliding front connector of rear joint direction, hand contactless catheter body, the front end of catheter body is inserted behind the urethra and is blocked main difficult landing by the urethra, but the sliding front connector of one-hand operation and propelling movement catheter, insert the catheter more deeply.

Example 2

As shown in fig. 7, the non-activation contact-free catheter comprises a front connector 1, a rear connector 2, a non-contact cylindrical membrane 3 and a catheter 4. As can be seen from the combination of fig. 12, the rear joint is a double-layer structure and is formed by sleeving the shell 5 and the drainage joint 6 together. As shown in fig. 12, the drain fitting 6 is mostly inside the housing 5, with a small portion exposed. The contact-free cylindrical membrane 3 is soft in texture, two ends of the contact-free cylindrical membrane are respectively connected to the shell 5 of the rear connector and the front connector 1, and the front connector 1 can be in sealing connection with the rear connector 2 so that the activation-free contact-free catheter forms a closed ring. Therefore, when the contact-free cylindrical film is filled with the liquid, the annular closing body can prevent the liquid from leaking out, and the liquid can circulate in the ring. The catheter 4 is positioned in the contact-free cylindrical membrane 3 and protected by the contact-free cylindrical membrane, so that medical staff or a catheter user can not directly contact the catheter tube body inside when holding the medical device. One end of the catheter is connected to the inner port 7 of the drainage connector of the rear connector, the other end is free and not fixedly connected, and when the contact-free cylindrical membrane is straightened, as shown in fig. 8, the free end of the catheter is close to the outer port 8 of the front connector. Therefore, when the catheter is inserted initially, the end part of the catheter can be exposed only by moving the front connector a little distance to the rear connector, and the catheter can be conveniently inserted into the urethra of a user. In order to enable the catheter body to have the super-smooth performance, reduce the friction between the catheter and the urethra and relieve the pain of a user, the surface of the catheter is coated with the super-smooth coating, or the super-smooth coating is combined on the surface in a chemical bond combination mode, so that the contact-free cylindrical membrane is filled with the activation-free liquid. The ultra-smooth coating is in direct contact with the activation-free liquid and in long-term contact. As shown in fig. 9 and 10, the front end of the front connector is enlarged to make its external shape similar to a handheld flashlight, and the enlarged portion of the front connector is composed of a hard inner tube 1-1 and a soft outer tube 1-2, and the inner tube is provided with an internal thread, and the other portion of the front connector is made of only the same material as the soft outer tube. As shown in fig. 11 and 12, the shell of the rear joint is made of soft material, the drain joint of the rear joint is made of hard material, the exposed part of the drain joint is provided with external threads, and the drain joint and the inner pipe of the front joint are matched through threads so that the drain joint and the inner pipe of the front joint can be connected.

After the front connector 1 and the rear connector 2 are separated, the user's fingers are positioned at the opening and pinch the front connector to enable the front connector to be exposed when the front connector slides towards the rear connector. As shown in fig. 12, the outer surface of the drainage connector of the rear connector is provided with a protrusion, a groove or a special-shaped structure, the inner surface of the housing of the rear connector is also provided with a groove, a protrusion or a special-shaped structure, and the shapes of the protrusion, the groove or the special-shaped structure on the contact surface of the drainage connector of the rear connector and the housing are matched with each other to tightly fasten the drainage connector and the housing together.

The catheter of this embodiment is used in essentially the same way as in example 1, except that the front and rear connectors are connected differently, in this embodiment a threaded connection is used, and therefore a rotary rather than a bayonet connection is used for connection and disconnection. Figure 13 shows the catheter after sliding the front connector to the rear connector, and folding due to the soft touch-free tubular membrane, the catheter tube is exposed when the front connector slides to the rear connector.

The hard material used for the front and rear joints in this embodiment may be a PP material, and the soft material may be a TPU material or a silica gel.

The ultra-smooth coating and the activation-free liquid of the activation-free contact-free urinary catheter described in the above two embodiments can be selected in the prior art, and the ultra-smooth coating is required to be in long-term contact with the activation-free liquid. The utility model provides a feasible scheme, the super smooth coating selects polyvinylpyrrolidone promptly, and exempts from to activate the liquid and chose for use polyvinylpyrrolidone aqueous solution.

Although the invention has been described herein with reference to the illustrated embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure herein. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The activation-free contact-free catheter is characterized by comprising a front connector (1), a rear connector (2), a contact-free cylindrical membrane (3) and a catheter (4), wherein the rear connector is formed by at least partially sleeving a shell (5) and a drainage connector (6) together, the inner part and the outer part of the shell and the drainage connector are sleeved together, two ends of the contact-free cylindrical membrane are respectively connected to the shell and the front connector of the rear connector, and the front connector can be in sealed connection with the rear connector to enable the activation-free contact-free catheter to form a closed ring; the catheter is positioned in the contact-free cylindrical membrane, one end of the catheter is connected to an inner port (7) of a drainage connector of the rear connector, the other end of the catheter is free, and the free end of the catheter is close to an outer port (8) of the front connector when the contact-free cylindrical membrane is straightened; the surface of the catheter is provided with a super-smooth coating, and the contact-free cylindrical membrane is filled with activation-free liquid.

2. The activation-free and contact-free urinary catheter according to claim 1, wherein the front connector is tubular, the catheter body is provided with an opening (9), the contact-free tubular membrane extends and is fixed in the front connector at the front end of the opening, and after the front connector and the rear connector are separated, the user's fingers are positioned at the opening and hold the front connector to enable the front connector to be exposed when the front connector is slid towards the rear connector.

3. The activation-free, contact-free urinary catheter according to claim 2, wherein the front end portion of the front connector has a shape matching the shape of the rear end portion of the drainage connector such that the front connector and the drainage connector form a tight connection when inserted into the drainage connector.

4. The activation-free contact-free urinary catheter according to claim 2, characterized in that the surface of the outer casing of the rear connector is provided with annular ribs (10) or protrusions for increasing the friction force, when ribs are provided, the maximum diameter of the ribs near the two ends of the rear connector is larger than the maximum diameter of the ribs in the middle of the rear connector.

5. The activation-free contact-free urinary catheter according to claim 3, wherein the outer side surface of the front end portion of the front joint is shaped like a truncated cone.

6. The activation-free contact-free urinary catheter according to claim 1, characterized in that the front end of the front joint is expanded, the expanded part of the front joint is composed of a hard inner tube (1-1) and a soft outer tube (1-2), the inner tube is provided with internal threads, and the other part of the front joint is made of the same material as the soft outer tube.

7. The activation-free contact-free urinary catheter according to claim 6, wherein the shell of the rear connector is made of soft material, the drainage connector of the rear connector is made of hard material, the exposed part of the drainage connector is provided with external threads, and the drainage connector and the inner pipe of the front connector are matched through threads so as to be connected.

8. The activation-free contact-free urinary catheter according to claim 6, wherein the outer surface of the drainage connector of the rear connector is provided with a protrusion or a groove, the inner surface of the outer shell of the rear connector is also provided with a groove or a protrusion, and the shapes of the protrusion or the groove on the contact surface of the drainage connector of the rear connector and the contact surface of the outer shell are matched with each other so that the drainage connector of the rear connector and the contact surface of the outer shell are fastened together.

9. The activation-free, contact-free urinary catheter according to claim 1, wherein the ultra-lubricious coating is polyvinyl pyrrolidone.

10. The activation-free, contact-free urinary catheter according to claim 9, wherein the activation-free liquid is an aqueous solution of polyvinylpyrrolidone.