CN215503200U

CN215503200U - Disposable tissue dilating catheter

Info

Publication number: CN215503200U
Application number: CN202121441364.5U
Authority: CN
Inventors: 黄粤鹏; 黄健
Original assignee: Taizhou Jianlang Medical Devices Co ltd
Current assignee: Taizhou Jianlang Medical Devices Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2022-01-14
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a disposable tissue dilatation catheter, which comprises a guide core (1) and a dilatation catheter (2) which is matched and arranged outside the guide core (1), a first side wing part (3) is arranged on one side of the rear end of the guide core (1), a second side wing part (4) is arranged on one side of the rear end of the expanding conduit (2), the main body section (2-1) of the expanding conduit (2) is a cylinder, the rear end part (2-2) of the dilating catheter (2) is an oval horn mouth, the main body section (2-1) and the rear end part (2-2) are in transition connection in a cambered surface (2-3), the included angle formed by the tangent line of the cambered surface (2-3) and the axial central line of the dilating catheter (2) is 15-45 degrees, the second flank part (4) is provided with an abdicating groove (5), and a clamping band (6) for fixing surgical instruments is arranged in the abdicating groove (5) in a matching manner. The utility model can better attach the surgical instrument to the inner wall of the dilating catheter, thereby increasing the surgical field of vision of doctors.

Description

Disposable tissue dilating catheter

Technical Field

The utility model relates to the field of medical consumables, in particular to a disposable tissue dilating catheter.

Background

When an open surgery is performed on the conventional thoracic cavity, abdominal cavity, brain and other parts, in order to expose the visual field of the operated area, find out the focus inside a tumor, polyp, bleeding point and the like, the tissue is usually expanded outwards, and a sufficient visual field and an operation space are reserved for the operation. The conventional dilator is of a cylindrical structure, the head end of the conventional dilator is consistent with the tail end of the conventional dilator in diameter, the head end of the conventional dilator is flush, a matched suction tube, electric coagulation forceps and endoscope can block the visual field of a doctor after being placed in the conventional dilator, and the focus cannot be searched through the visual field expanded by the dilator. Because focus department condition is unclear, inside is full of blood, pustule etc. and the field of vision still calculates clearly when the apparatus just got into, after the operation began a period, has the appearance of bloodiness on the body, and doctor's field of vision can receive the influence, can't accurately carry out the operation. The doctor needs to hold the apparatus all the time to perform the operation in the whole operation, and the hand burden is great, has increased the degree of difficulty for the operation in the operation later stage, and doctor's comfort level is not high. If the operation difficulty is increased, the operation time is increased, and the failure rate of the operation is easy to cause.

For example, publication No. CN112587181A relates to a disposable brain tissue dilating catheter, which comprises a tubular catheter body made of transparent material, wherein one end of the catheter body is an extending end, the other end is an exposed end, the inner diameter and the outer diameter of the catheter body are both increased gradually from the extending end to the exposed end, and the endoscope, the suction apparatus and the electric coagulation forceps need to be placed in the dilating catheter by doctors during surgery, resulting in poor visual field of doctors during surgery and greatly increased difficulty of surgery operation.

Accordingly, there is a need for an optimized single use tissue dilation catheter that is developed by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving the above-mentioned deficiencies of the prior art and providing a disposable tissue dilation catheter which can better attach surgical instruments (such as endoscopes, electro coagulation forceps, etc.) to the inner wall of the dilation catheter and increase the surgical field of the surgeon.

In order to achieve the purpose of the utility model, the technical scheme provided by the utility model is as follows: disposable tissue dilatation pipe locates the outside expansion pipe of guide core including guide core and adaptation, guide core rear end one side and be provided with first flank portion, expansion pipe rear end one side is provided with second flank portion, the main part section of expansion pipe is the cylinder, and the back tip of expansion pipe is oval horn mouth, be cambered surface transitional coupling between main part section and the back tip, the tangent line and the contained angle scope that expansion pipe axial direction line of cambered surface become are 15-45, the recess of stepping down has been seted up to second flank portion, the adaptation is provided with the cassette tape that is used for fixed surgical instruments in the recess of stepping down.

Further, the joint of the second side wing part and the expansion conduit is in circular arc transition.

Furthermore, a spring buckle is arranged in the first side wing part in an adaptive mode, the first side wing part is clamped with the second side wing part in an adaptive mode through the spring buckle, a push rod is arranged on the outer side of the first side wing part and is connected with the spring buckle in an adaptive mode, and the first side wing part and the second side wing part are opened or locked by applying or releasing pressure to the spring buckle through the push rod.

Furthermore, the guide core and the dilatation catheter are both made of medical-grade modified high-transmittance polycarbonate materials.

Furthermore, the cassette surface is equipped with bellied stripe, the cassette is high-elastic silica gel material.

Furthermore, the abdicating groove is a circular groove with the diameter of 4-10 mm.

Based on the technical scheme, compared with the prior art, the utility model has the following technical advantages:

the main body section of the dilating catheter is cylindrical, the rear end part of the dilating catheter is in an oval bell mouth, the main body section and the rear end part are in arc surface transitional connection design, the included angle formed by the tangent line of the arc surface and the axial center line of the dilating catheter ranges from 15 degrees to 45 degrees, surgical instruments (such as an endoscope, electric coagulation forceps and the like) can be better attached to the inner wall of the dilating catheter, and the surgical field of view of a doctor is increased; the second side wing part is provided with an abdication groove, a clamping belt for fixing surgical instruments is arranged in the abdication groove in a matching mode, the surgical instruments (such as an endoscope, electric coagulation forceps and the like) which are used in a matched mode can be placed in the groove for fixing, and the operation is facilitated; the joint of the second wing part and the dilation catheter is in arc transition, so that the comfort level of a doctor when holding the dilation catheter by hands is enhanced; the surface of the clamping belt is provided with raised stripes, and the clamping belt is made of high-elasticity silica gel material, so that the fixing effect on surgical instruments (such as an endoscope, electric coagulation forceps and the like) can be improved; the guide core and the dilatation catheter are made of medical-grade modified high-transparency polycarbonate materials, the medical-grade modified high-transparency polycarbonate materials have the advantages of being high in transparency, strong in rigidity and good in biocompatibility, tissues can be expanded to the periphery, and the medical-grade modified high-transparency polycarbonate materials can prevent blood stains from being attached to the surfaces of the guide core and the dilatation catheter, so that doctors can observe the focus condition conveniently, and the visual field of the operation is not affected.

Drawings

FIG. 1 is a front view of a single use tissue dilation catheter.

Fig. 2 is a left side view of the single use tissue dilation catheter.

Fig. 3 is a schematic structural diagram of the cassette.

Fig. 4 is a schematic structural view of the dilating catheter.

Fig. 5 is a schematic structural view of the guide core.

In the figure: 1. the novel expansion catheter comprises a guide core, 2-1 parts of an expansion catheter, 2-2 parts of a main body section, 2-3 parts of a rear end part, 2-3 parts of an arc surface, 3 parts of a first side wing part, 4 parts of a second side wing part, 5 parts of a yielding groove, 6 parts of a clamping belt, 6-1 parts of stripes, 7 parts of a spring buckle and 8 parts of a push rod.

Detailed Description

The utility model is further explained below with reference to the figures and examples.

Example 1

As shown in fig. 1-5, the disposable tissue dilation catheter comprises a guide core 1 and a dilation catheter 2 adapted to be disposed outside the guide core 1, wherein a first side wing part 3 is disposed on one side of the rear end of the guide core 1, a second side wing part 4 is disposed on one side of the rear end of the dilation catheter 2, a main body section 2-1 of the dilation catheter 2 is cylindrical, a rear end part 2-2 of the dilation catheter 2 is an elliptical horn mouth, the main body section 2-1 and the rear end part 2-2 are in arc surface 2-3 transitional connection, an included angle range formed by a tangent line of the arc surface 2-3 and an axial center line of the dilation catheter 2 is 15-45 degrees, a abdicating groove 5 is disposed on the second side wing part 4, and a clamping band 6 for fixing surgical instruments is disposed in the abdicating groove 5 in an adaptive manner.

Example 2

Otherwise, in accordance with the solution of example 1, the second wing part 4 is in the form of a circular arc transition at the connection with the dilatation catheter 2.

Example 3

The rest of the technical scheme is consistent with that of the embodiment 1, a spring buckle 7 is arranged in the first side wing part 3 in an adaptive mode, the first side wing part 3 is in adaptive clamping with the second side wing part 4 through the spring buckle 7, a push rod 8 is arranged on the outer side of the first side wing part 3, the push rod 8 is in adaptive connection with the spring buckle 7, and the push rod 8 applies or releases pressure to the spring buckle 7 to enable the first side wing part 3 and the second side wing part 4 to be opened or locked.

Example 4

Otherwise, in accordance with the embodiment of example 1, the guiding core 1 and the dilating catheter 2 are made of medical modified high-permeability polycarbonate.

Example 5

The rest of the scheme is consistent with the scheme of the embodiment 1, the surface of the clamping belt 6 is provided with the convex stripes 6-1, the clamping belt 6 is made of high-elasticity silica gel, the clamping belt 6 has elasticity, and the convex stripes 6-1 arranged on the surface of the clamping belt 6 can increase the friction force.

Example 6

Otherwise, in accordance with the embodiment of example 1, the relief groove 5 is a circular groove with a diameter of 8 mm.

The specific implementation process is as follows:

when the disposable tissue dilating catheter is placed into a human body, when the blood rises in the inner cavity of the guide core 1 or a doctor sees a focus, the push rod 8 is pressed, the guide core 1 is removed, the dilation catheter 2 is fixed, a doctor places surgical instruments (such as an endoscope, electric coagulation forceps and the like) which need to be used into the inner cavity of the dilation catheter 2 for surgical operation, the doctor can place the surgical instruments such as the endoscope, the electric coagulation forceps and the like into the abdicating groove 5 arranged on the second flank part 4, and the surgical instruments such as an endoscope, electric coagulation forceps and the like are clamped and fixed in the abdicating groove 5 through the clamping belt 6, meanwhile, the included angle formed by the tangent line of the cambered surface 2-3 and the axial central line of the dilating catheter 2 ranges from 15 degrees to 45 degrees, and the bending angle of synchronously used surgical instruments such as an endoscope and electric coagulation forceps is matched, so that the surgical instruments such as the endoscope and the electric coagulation forceps are attached to the inner wall of the dilating catheter 2, and the operation visual field of a doctor cannot be blocked.

The foregoing is illustrative and explanatory of the utility model and is not intended to limit the advantages attainable thereby, and it is within the scope of the present application for any one or more of the advantages to be realized, whether simple changes in construction and/or implementation in some embodiments are possible in the practice of the utility model.

Claims

1. Disposable tissue dilatation pipe is located including leading core (1) and adaptation and is led outside dilatation pipe (2) of core (1), it is provided with first flank portion (3) to lead core (1) rear end one side, dilatation pipe (2) rear end one side is provided with second flank portion (4), its characterized in that: the utility model discloses a surgical instrument, including expansion pipe (2), main part section (2-1) of expansion pipe (2) are the cylinder, and the back tip (2-2) of expansion pipe (2) are oval horn mouth, be cambered surface (2-3) transitional coupling between main part section (2-1) and back tip (2-2), the tangent line and the expansion pipe (2) axial centerline contained angle scope of cambered surface (2-3) are 15-45, second flank portion (4) have been seted up one and have been stepped down recess (5), the adaptation is provided with cassette tape (6) that are used for fixed surgical instrument in the recess of stepping down (5).

2. The single use tissue dilation catheter according to claim 1, wherein: the joint of the second flank part (4) and the dilatation catheter (2) is in arc transition.

3. The single use tissue dilation catheter according to claim 1, wherein: the improved wing opening and closing mechanism is characterized in that a spring buckle (7) is arranged in the first side wing portion (3) in an adaptive mode, the first side wing portion (3) is in adaptive clamping with the second side wing portion (4) through the spring buckle (7), a push rod (8) is arranged on the outer side of the first side wing portion (3), the push rod (8) is in adaptive connection with the spring buckle (7), and the first side wing portion (3) and the second side wing portion (4) are opened or locked by applying or releasing pressure to the spring buckle (7) through the push rod (8).

4. The single use tissue dilation catheter according to claim 1, wherein: the guide core (1) and the dilating catheter (2) are both made of medical-grade modified high-transmittance polycarbonate materials.

5. The single use tissue dilation catheter according to claim 1, wherein: the surface of the clamping belt (6) is provided with convex stripes (6-1), and the clamping belt (6) is made of high-elastic silica gel.

6. The single use tissue dilation catheter according to claim 1, wherein: the abdicating groove (5) is a circular groove with the diameter of 4-10 mm.