CN219001639U

CN219001639U - Medical catheter with working distance measuring and damage preventing functions

Info

Publication number: CN219001639U
Application number: CN202320076723.4U
Authority: CN
Inventors: 杭永斌; 唐跃; 李波; 唐雅敬; 黄明; 李建峰
Original assignee: Seventh Affiliated Hospital Of Sun Yat Sen University Shenzhen
Current assignee: Seventh Affiliated Hospital Of Sun Yat Sen University Shenzhen
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-05-12
Anticipated expiration: 2033-01-10

Abstract

The utility model is suitable for the technical field of medical instruments, and provides a medical catheter with working distance measurement and damage prevention functions, which comprises: the catheter body comprises a catheter body part and a catheter tail end, the catheter tail end is arranged at the tail end of the medical catheter, and a forward graduated scale and a reverse graduated scale are respectively arranged at the left side and the right side of the catheter body; the catheter head end is arranged at the head end of the medical catheter and connected with the catheter body, and the top of the catheter head end is of a soft catheter structure; a developing component is arranged in the head end of the catheter. Therefore, the medical catheter provided by the utility model has the functions of measuring the working distance of the operation channel and preventing the patient from being injured in the cardiovascular interventional operation.

Description

Medical catheter with working distance measuring and damage preventing functions

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a medical catheter with working distance measurement and damage prevention functions.

Background

Catheters are a necessary medical instrument in many interventional procedures, such as catheters used in cardiovascular interventional procedures, and the period of time is the key to determine the success or failure of the therapy. The single ultrasonic imaging belongs to the scanning imaging by surface, and the position of the catheter cannot be accurately displayed as in the case of radioactive rays. When the single ultrasonic guide cardiovascular interventional operation is adopted, most of the existing medical catheters cannot accurately measure the working distance, and the accurate position of the catheters cannot be displayed due to the small ultrasonic section, so that certain difficulty and uncertainty are caused to the operation.

The defects of the existing medical catheter used for the single ultrasonic guided cardiovascular interventional operation include:

1. the existing medical catheter applied to cardiovascular interventional operation needs to use radioactive rays and contrast agents to display the position of the catheter, but larger radiation exists, and radioactive rays can be damaged to doctors and patients in the operation;

2. the top of the head end of the existing medical catheter is sharper, and the structure of cardiovascular tissues is easily damaged in the cardiovascular interventional operation process;

3. the working distance cannot be accurately measured in the existing medical catheter, so that the catheter enters the body to be the estimated distance, and errors are easy to cause. This brings inconvenience and increases the risk of surgery for a purely ultrasound-guided cardiovascular intervention;

4. the existing medical catheter is not easy to probe, track and capture under the pure ultrasonic image.

In summary, the prior art has obvious inconvenience and defects in practical use, so that improvement is needed.

Disclosure of Invention

In view of the above-mentioned drawbacks, an object of the present utility model is to provide a medical catheter having working distance measurement and atraumatic function, so as to achieve that the medical catheter provided in interventional surgery has a working distance measurement of a surgical channel and an atraumatic patient.

In order to achieve the above object, the present utility model provides a medical catheter 200 having working distance measurement and atraumatic function, comprising:

a catheter body 1 comprising a catheter body 11 and a catheter tail 12, wherein the catheter tail 12 is arranged at the tail end of the medical catheter 200, and a forward graduated scale 13 and a reverse graduated scale 14 are respectively arranged at the left side and the right side of the catheter body 1;

a catheter head end 2 provided at the head end of the medical catheter 200, connected to the catheter body 11, and having a soft catheter structure at a top 21 of the catheter head end 2; a developing part 3 is arranged in the catheter head end 2.

According to the medical catheter 200 with the working distance measuring and damage preventing functions, the forward graduated scale 13 is 0-110 cm; the counter scale 14 is 0-60 cm.

According to the medical catheter 200 with the working distance measuring and damage preventing functions, the catheter head end 2 is of a tubular structure with an arc-shaped appearance; the medical catheter 200 is made of plastic.

According to the medical catheter 200 with working distance measurement and anti-damage function, the top 21 of the catheter head end 2 is made of Pebax material.

According to the medical catheter 200 with the working distance measuring and damage preventing functions, the developing part 3 is an ultrasonic developing ring; or the developing member 3 is an ultrasonic developing bar;

the distance between the developing part 3 and the soft catheter structure is a preset first distance.

According to the medical catheter 200 with working distance measurement and damage prevention functions, the ultrasonic developing ring is a metal ring, the metal ring is embedded into the inner wall of the cavity 22 of the tubular structure, and a plurality of first grooves are formed in the metal ring;

the ultrasonic development strip is a metal strip, the metal strip is embedded into two sides of the inner wall of the cavity 22 of the tubular structure, and a plurality of second grooves are formed in the metal strip;

the preset first distance is 5-15 mm.

According to the medical catheter 200 with the working distance measuring and damage preventing functions, the outer diameter of the metal ring is 12-18 mm, and the width of the first groove is 1-3 mm; the length of the metal strip is 8-12 mm, the width of the second groove is 1-3 mm, and the length of the soft catheter structure is 3-7 mm.

According to the medical catheter 200 with the working distance measuring and damage preventing functions, the outer diameter of the metal ring is 15mm, and the width of the first groove is 2mm; the length of the metal strip is 10mm, and the width of the second groove is 2mm; the length of the soft catheter structure is 5mm, and the distance from the developing part 3 to the soft catheter structure is 15mm.

According to the medical catheter 200 having the working distance measuring and anti-damage functions, the catheter head end 2 includes: a multifunctional catheter head, a single elbow or a pigtail catheter head.

According to the medical catheter 200 with working distance measurement and anti-damage functions, the medical catheter 200 is applied to an ultrasound-guided cardiovascular interventional operation.

In summary, the present utility model provides a medical catheter having working distance measurement and atraumatic function, comprising: the catheter comprises a catheter main body, a catheter head end and a developing part, wherein a forward graduated scale and a reverse graduated scale are respectively arranged at two side ends of the catheter main body; and the top of the head end of the catheter main body is a soft catheter structure; the developing component is arranged in the catheter head end. Therefore, the working distance of the catheter can be accurately measured in the single ultrasonic guide cardiovascular interventional operation, the tissue structures of the heart and the blood vessels are prevented from being damaged, and the position of the catheter in the heart and the blood vessels can be rapidly and accurately detected by ultrasonic. The safety and the effectiveness of cardiovascular interventional operation are improved. The ultrasonic developing medical catheter with the working distance measuring and damage preventing functions is provided for cardiovascular interventional operation, and the safety and convenience of the cardiovascular interventional operation are improved.

Drawings

FIG. 1 is a schematic view of a medical catheter with working distance measurement and atraumatic function according to an embodiment of the present utility model;

fig. 2 is a schematic view of the operation of the medical catheter with working distance measurement and anti-injury function provided by the embodiment of the utility model, which is placed into a blood vessel through an arterial sheath.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-2, in one embodiment of the present utility model, a medical catheter 200 with working distance measurement and atraumatic function is provided, comprising:

the catheter body 1 comprises a catheter body 11 and a catheter tail end 12, the catheter tail end 12 is arranged at the tail end of the medical catheter 200, and a forward graduated scale 13 and a reverse graduated scale 14 are respectively arranged at the left side and the right side of the catheter body 1;

a catheter head end 2 which is provided at the head end of the medical catheter 200 and is connected to the catheter body 11, and the top 21 of the catheter head end 2 has a soft catheter structure; a developing member 3 is provided in the catheter tip 2.

In this embodiment, the catheter body 1 comprises a catheter body 11 and a catheter tail 12, the catheter body 11 being a mid-section of the catheter body 1 and the catheter tail 12 being a tail of the catheter body 1, in practice also a tail of the medical catheter 200. The catheter head 2 is the head of the medical catheter 200. The catheter main body 1 of the medical catheter 200 is provided with the forward graduated scale 13 and the reverse graduated scale 14, through which the working distance can be measured in operation and marked correspondingly, for example, the medical catheter 200 enters a blood vessel of a patient through an arterial sheath, the length of the working distance is forwarded to the medical catheter 200, at the moment, a doctor can clearly see the working distance entering the patient and the residual length of the catheter left outside the patient, and the problems that the working distance cannot be measured accurately by the existing medical catheter, the medical catheter enters the body and is also the estimated distance, errors are easy to cause, inconvenience is brought to the single ultrasonic guiding cardiovascular interventional operation, and the operation risk is increased are solved. The top 21 of the catheter head end 2 is a soft catheter structure, so that the catheter can be prevented from damaging cardiovascular tissue structures due to the soft characteristic of the soft catheter structure in the operation process of an operation, and the problem that the top of the existing medical catheter head end in the prior art is sharper and is easy to damage cardiovascular tissue structures is solved. The developing part 3 is arranged in the catheter head end 2, so that the position of the medical catheter 200 can be quickly and accurately detected and tracked by utilizing ultrasonic waves in the process of operation. Therefore, the medical catheter 200 provided by the embodiment can solve the defects of the existing medical catheter used for the cardiovascular interventional operation guided by the pure ultrasound, and is easy to be probed, tracked and captured under the pure ultrasound image due to the arrangement of the independent developing component 3. And no radiation or contrast agent is needed during the operation to show the position of the medical catheter 200, avoiding the possible radiation damage to the patient during the operation. The medical catheter 200 provided in this embodiment is particularly suitable for application in a purely ultrasound-guided congenital heart disease interventional occlusion procedure.

Referring to fig. 1-2, in one embodiment of the utility model, the forward scale 13 is 0-110 cm; the reverse scale 14 is 0-60 cm. The pair of scales may be configured to allow the surgeon to use them to measure the forward and reverse distances in the surgical tunnel. The catheter head end 2 is a tubular structure with an arc-shaped appearance, or the catheter head end 2 is a catheter structure with an arc-shaped appearance, namely, the catheter head end 2 is a catheter with an arc. The medical catheter 200 is made of a material including plastic. Whereas the material of construction of the top portion 21 of the catheter head end 2 comprises Pebax (polyether block polyamide) material; the Pebax resin family of materials has many excellent properties between the thermoplastic elastomer and the rubber body, and due to the unique chemical structure, the Pebax materials have the properties of the thermoplastic elastomer, including: the lightest engineering thermoplastic elastomer; good and stable consistent performance at low temperatures; no loss of mechanical properties under repeated deformation, and fatigue resistance; good rebound and elastic recovery; accurate dimensional stability; excellent processability, etc. The top 21 of the catheter head end 2 in the application can be made of Pebax materials according to different softness requirements, or the Pebax materials are mixed with other plastics according to a certain proportion. Optionally with polyethylene or polytetrafluoroethylene, etc. Of course, other parts of the medical catheter 200, such as the catheter body 1, may be added with a certain proportion of Pebax material as required by the operation. However, the stiffness of the rest of the medical catheter 200 is higher than the stiffness of the tip 21 of the catheter head 2. The tip 21 of the catheter head 2 is a soft and elastic part, which can avoid the damage of blood vessels during operation. Alternatively, the catheter body 1 and the catheter head end 2 may be integrally formed.

Referring to fig. 1 to 2, in one embodiment of the present utility model, the developing member 3 is an ultrasonic developing ring; or the developing means 3 is an ultrasonic developing bar. The reflection of the ultrasonic signal can be made stronger by both of these developing units 3. The distance between the developing part 3 and the soft catheter structure is a preset first distance. Preferably, the preset first distance is 5-15 mm.

Referring to fig. 1-2, in one embodiment of the present utility model, the ultrasonic developing ring is a metal ring, the metal ring is embedded in the inner wall of the cavity 22 of the tubular structure, and a plurality of first grooves are arranged on the metal ring; the ultrasonic development strip is a metal strip, the metal strip is embedded into two sides of the inner wall of the cavity 22 of the tubular structure, and a plurality of second grooves are formed in the metal strip;

in addition, the outer diameter of the metal ring is 12-18 mm, and the width of the first groove is 1-3 mm; the length of the metal strip is 8-12 mm, the width of the second groove is 1-3 mm, and the length of the soft catheter structure is 3-7 mm. For the metal ring, it is directly applied to the inner wall of the cavity 22 of the tubular structure, since its thickness is generally not too great, about a millimeter, and therefore only the size of its outer diameter is described in this application. In a preferred embodiment, the outer diameter of the metal ring is 15mm, and the width of the first groove is 2mm; the length of the metal strip is 10mm, and the width of the second groove is 2mm; the length of the soft catheter structure is 5mm, and the distance from the developing part 3 to the soft catheter structure is 15mm. Of course, other size choices are possible.

In one embodiment of the present utility model, for the ultrasonic development structural design of the development component 3, when the process of fixing the medical catheter 200 is performed, the development component 3 is disposed in the cavity 22 about 15mm away from the soft catheter structure, that is, the development component 3 is embedded, for example, the ultrasonic development ring is made into a metal ring with an outer diameter of about 15mm, and the material is selected from stainless steel, nickel-titanium alloy and other metals. And 2-3 first grooves of about 2mm are circumferentially engraved on the metal ring, and the first grooves can realize reflection development under ultrasound. The ultrasonic development strip is a metal strip with the length of about 10mm embedded at two sides in the cavity 22 which is about 15mm away from the soft catheter structure, and the material of the ultrasonic development strip is stainless steel, nickel-titanium alloy and other metals. The metal strip is carved with 1-2 second grooves with the thickness of about 2mm, and the same second grooves can realize reflection development under ultrasound, thereby improving the ultrasound development function of the medical catheter 200.

The catheter head 2 of the medical catheter 200 provided in various embodiments of the present utility model includes: a multifunctional catheter head, a single elbow or a pigtail catheter head, etc. The medical catheter 200 may be used in interventional procedures, such as cardiovascular interventional procedures. Alternatively, the medical catheter 200 is a medical catheter 200 for use in ultrasound-guided cardiovascular interventional procedures

Referring to fig. 2, in one embodiment of the utility model, an illustration of the operational operation of a medical catheter 200 placed into a blood vessel 5 through an arterial sheath 4 is shown in fig. 2. The operation process of the single ultrasonic guided cardiovascular interventional operation is as follows:

1. firstly, measuring and marking working distances by using a forward graduated scale 13 and a reverse graduated scale 14 on the catheter main body 1;

2. the medical catheter 200 is then advanced into the blood vessel 5 via the arterial sheath 4, advancing the medical catheter 200 to the length of the working distance marked in step 1, at which point the working distance of the medical catheter 200 into the patient and the remaining length of the catheter left outside the patient are clearly visible to the surgeon.

3. The position of the medical catheter 200 is rapidly and accurately detected and tracked by ultrasound during surgery according to the visualization means 3 on the medical catheter 200.

4. The top 21 of the catheter head end 2 of the medical catheter 200 is a soft catheter structure; the working distance is precisely measured before the catheter tip 2 enters the patient, and the catheter tip 2 is provided with the developing part 3 serving as an ultrasonic developing structure, so that the catheter can be prevented from damaging cardiovascular tissue structures in the process of advancing the medical catheter 200.

Therefore, in the present utility model, standard scales are respectively printed on both sides of the catheter body 1 of the medical catheter 200. In the case of cardiovascular intervention, for example, the length of the medical catheter 200 to be placed in the patient and the remaining length to be left outside the body can be accurately measured; the tip 21 of the catheter tip 2 is designed to be a soft atraumatic structure about 5mm long, which is atraumatic without affecting the catheter support. Avoid the catheter from entering the body, the sharp puncture at the head end and injure the heart and vascular tissue structure, and can reduce and even avoid serious complications of cardiovascular interventional operation. In addition, the developing part 3 serving as an ultrasonic developing structure is embedded into the head end of the catheter, so that the ultrasonic can rapidly and accurately detect the position of the catheter during the single ultrasonic guided cardiovascular interventional operation, and the accuracy and safety of the catheter implantation are improved.

Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model, as will be apparent to those skilled in the art, without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A medical catheter (200) with working distance measurement and atraumatic function, characterized in that it comprises:

the catheter body (1) comprises a catheter body part (11) and a catheter tail end (12), wherein the catheter tail end (12) is arranged at the tail end of the medical catheter (200), and a forward graduated scale (13) and a reverse graduated scale (14) are respectively arranged at the left side and the right side of the catheter body (1);

a catheter head end (2) which is arranged at the head end of the medical catheter (200) and is connected with the catheter body (11), and the top (21) of the catheter head end (2) is of a soft catheter structure; a developing component (3) is arranged in the catheter head end (2).

2. The medical catheter (200) according to claim 1, wherein the forward scale (13) is 0-110 cm; the reverse scale (14) is 0-60 cm.

3. The medical catheter (200) according to claim 1, wherein the catheter tip (2) is of a tubular configuration having an arcuate profile; the medical catheter (200) is made of plastic.

4. A medical catheter (200) according to claim 3, wherein the material of which the tip (21) of the catheter tip (2) is made comprises Pebax material.

5. A medical catheter (200) according to claim 3, wherein the developing means (3) is an ultrasound developing ring; or the developing component (3) is an ultrasonic developing strip;

the distance between the developing component (3) and the soft conduit structure is a preset first distance.

6. The medical catheter (200) of claim 5, wherein the ultrasound imaging ring is a metal ring embedded in an inner wall of a cavity (22) of the tubular structure and having a plurality of first grooves disposed thereon;

the ultrasonic development strip is a metal strip, the metal strip is embedded into two sides of the inner wall of the cavity (22) of the tubular structure, and a plurality of second grooves are formed in the metal strip;

the preset first distance is 5-15 mm.

7. The medical catheter (200) of claim 6, wherein the metal ring has an outer diameter of 12-18 mm and the first groove has a width of 1-3 mm; the length of the metal strip is 8-12 mm, the width of the second groove is 1-3 mm, and the length of the soft catheter structure is 3-7 mm.

8. The medical catheter (200) of claim 6, wherein the metal ring has an outer diameter of 15mm and the first groove has a width of 2mm; the length of the metal strip is 10mm, and the width of the second groove is 2mm; the length of the soft conduit structure is 5mm, and the distance from the developing component (3) to the soft conduit structure is 15mm.

9. The medical catheter (200) according to claim 1, wherein the catheter head end (2) comprises: a multifunctional catheter head, a single elbow or a pigtail catheter head.

10. The medical catheter (200) according to claim 1, wherein the medical catheter (200) is a medical catheter (200) for application in ultrasound guided cardiovascular interventional procedures.