CN215503197U

CN215503197U - Disposable tissue dilating catheter

Info

Publication number: CN215503197U
Application number: CN202121325928.9U
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: 2021-06-15
Filing date: 2021-06-15
Publication date: 2022-01-14
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a disposable tissue dilatation catheter, which comprises a guide core (1) and an dilatation catheter (2), wherein an endoscope (3) is embedded on the outer side wall of an insertion end of the dilatation catheter (2), a first side wing part (4) is arranged at the end part of the guide core (1), a second side wing part (7) is arranged at the end part of the dilatation catheter (2), a spring buckle (6) is arranged in the first side wing part (4), an external connector (8) electrically connected with the endoscope (3) is arranged in the second side wing part (7), the first side wing part (4) is clamped with the second side wing part (7) through the spring buckle (6), a push rod (5) is arranged on the outer side of the first side wing part (4), the push rod (5) is connected with a spring buckle (6), the first side wing part (4) and the second side wing part (7) are opened or locked by applying or releasing pressure to the spring buckle (6) through the push rod (5). The endoscope is embedded at one end of the side wall of the dilatation catheter, the surgical wound is small, and the visual function is increased.

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

Craniocerebral injuries are classified into primary craniocerebral injuries and secondary craniocerebral injuries according to the nature of the injuries, wherein the primary craniocerebral injuries comprise concussion, contusion and laceration of the brain, diffuse axonal injury and primary brain stem injury, and the secondary craniocerebral injuries comprise encephaledema and intracranial hematoma. The cause of craniocerebral injury is the mechanical deformation of the skull, meninges, cerebral vessels and brain tissues caused by external forces acting on the head. The operation modes after craniocerebral injury comprise craniotomy hematoma removal, bone flap removing decompression, drilling exploration, ventricular external drainage, drilling drainage and the like. Apart from craniocerebral injury, brain tumor is one of the common serious diseases of nervous system, and according to the research article of "Neurology" in the book of lancet, it is shown that the statistics of the largest-scale brain tumor in the world show that the number of Chinese patients with disease and death is the first in the world.

Among a plurality of craniocerebral injury and brain tumor treatment modes, craniotomy treatment becomes an indispensable technical means in craniocerebral injury and brain tumor treatment due to the advantages of direct focus, rapidness, effectiveness and the like. To expose the field of view of the operative field, brain retractors and brain compression plates are often used in minimally invasive neurosurgical procedures. However, the traditional brain pressure plate usually causes uneven local compression of brain tissue to cause a series of intraoperative and postoperative complications, and the traditional retractor only has the function of retracting the tissue without other functions, so that a doctor with limited operative field is difficult to perform the operation.

For example, the 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, an operating handle is fixedly arranged at the end of the exposed end of the catheter body, a flexible transparent film is arranged on one side of the outer tube wall of the catheter body, the edges on the two sides of the transparent film in the length direction are respectively and fixedly connected to the outer tube wall on the two sides of the catheter body, the corresponding radian between the edges on the two sides of the catheter body in the length direction connected with the transparent film is 45-100 degrees, the width of the transparent film is not less than two times of the arc length of the corresponding section on the catheter body, a channel for a perfusion tube to pass through is surrounded between the transparent film and the outer tube wall of the catheter body, and the transparent film can be folded and covered on the outer tube wall of the catheter body, the disposable brain tissue dilatation catheter is used by doctors in the operation process, an endoscope is required to be used independently, the suction device and the electric coagulation forceps are operated synchronously, the operation wound can be enlarged, a large amount of time is required for fixing the endoscope, enough space needs to be expanded for the alternate operation of three instruments, and the whole operation time and the expansion size are large burdens for patients and doctors.

Therefore, in view of the limitations of conventional retractors or dilators in the treatment of numerous cranial injuries and brain tumors, there is a great need for those skilled in the art to develop a new disposable tissue dilation catheter.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcoming the above-mentioned deficiencies of the prior art and providing a disposable tissue dilation catheter.

In order to achieve the purpose of the utility model, the technical scheme provided by the utility model is as follows: disposable tissue expansion pipe, including leading the core and locating the outside expansion pipe of guide core, it is equipped with the endoscope to inlay on the lateral wall that the expansion pipe inserted the end, guide core one end portion is provided with first flank portion, expansion pipe one end portion is provided with second flank portion, the adaptation is provided with the spring buckle in the first flank portion, be provided with the external connector with endoscope electric connection in the second flank portion, first flank portion passes through spring buckle and second flank portion adaptation block to be provided with the push rod outside first flank portion, push rod and spring buckle adaptation are connected, and it opens or locks to exert or release pressure messenger first flank portion and second flank portion to the spring buckle through the push rod.

Preferably, the external connector includes a power source and a signal connector electrically connected to the power source, and a power switch electrically connected to the power source is disposed on an outer surface of the second wing portion.

Preferably, the lateral wall hoop that the expansion pipe inserted the end inlays and is equipped with a medical cold light source area, medical cold light source area and power electric connection, the switching of medical cold light source area is controlled through switch.

Preferably, the front end of the guide core extends out of the outside of the dilatation catheter, and the front end of the guide core is provided with a circular-arc chamfer surface.

Preferably, the outer wall of the guide core is attached to the inner wall of the dilatation catheter.

Preferably, the signal connector is a USB interface.

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

Preferably, the guide core and one end of the dilatation catheter are both flared.

Preferably, the length of the guide core and the dilatation catheter is 50-90mm, and the diameter of the guide core and the dilatation catheter is 8-25 mm.

Preferably, the outer surface of the dilatation catheter is provided with graduated markings.

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

1. the endoscope is embedded on the outer side wall of the insertion end of the dilating catheter, so that the space is saved, the surgical wound is small, the visual function is increased, a doctor can conveniently find a focus and clearly see the actual condition of the focus through the endoscope on the tissue dilating catheter, other medical personnel are not needed to assist in fixing instruments, the dilating catheter can be more accurately and rapidly placed into the focus or a bleeding point compared with a conventional dilating catheter, the doctor can more clearly and accurately complete surgical operation to stop bleeding or remove tumors, the surgical time is reduced, and the surgical completion degree is better;

2. the medical cold light source ring is embedded on the outer side wall of the insertion end of the dilatation catheter in the axial direction, sufficient light can shine into a focus without dead angles, the patient end cannot be shielded by hand shadows, and the light source is sufficient and has good definition;

3. the guide core and the dilating catheter are both made of medical-grade modified high-transmittance polycarbonate materials, and the medical-grade modified high-transmittance polycarbonate materials have the characteristics of high transmittance, strong rigidity and good biocompatibility, can dilate tissues to the periphery, are convenient for doctors to observe the focus condition, and do not influence the visual field of the endoscope;

4. the outer surface of the dilating catheter is provided with scale marks, so that the embedded depth can be accurately fixed.

Drawings

Fig. 1 is a schematic structural view of embodiment 1.

Fig. 2 is a schematic cross-sectional view taken along line a-a in fig. 1.

Fig. 3 is a schematic structural view of embodiment 2.

In the figure: 1. the medical cold light source comprises a guide core, 2 expansion guide pipes, 3 endoscopes, 4 first side wing parts, 5 push rods, 6 spring fasteners, 7 second side wing parts, 8 external connectors, 8-1 power sources, 8-2 signal connectors, 9 arc chamfer surfaces, 10 conducting wires, 11 medical cold light source belts and 12 power switches.

Detailed Description

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

Example 1

As shown in fig. 1-2, the disposable tissue dilation catheter comprises a guide core 1 and a dilation catheter 2 arranged outside the guide core 1, an endoscope 3 is embedded on the outer side wall of the insertion end of the dilation catheter 2, a first side wing part 4 is arranged at one end part of the guide core 1, a second side wing part 7 is arranged at one end part of the dilation catheter 2, a spring buckle 6 is arranged in the first side wing part 4 in a matching manner, an external connector 8 electrically connected with the endoscope 3 is arranged in the second side wing part 7, the first side wing part 4 is clamped with the second side wing part 7 in a matching manner through the spring buckle 6, a push rod 5 is arranged outside the first side wing part 4, the push rod 5 is connected with the spring buckle 6 in a matching manner, and the first side wing part 4 and the second side wing part 7 are opened or locked by applying or releasing pressure to the spring buckle 6 through the push rod 5.

The tip of the guide core 1 extends outside the dilatation catheter 2 and the tip of the guide core 1 is provided with a rounded chamfer 9. The outer wall of the guide core 1 is mutually attached to the inner wall of the dilating catheter 2. The guide core 1 and the dilating catheter 2 are both made of medical-grade modified high-permeability polycarbonate materials. One end of the guide core 1 and one end of the dilating catheter 2 are both arranged in a trumpet shape. The length of the guide core 1 and the dilating catheter 2 is 50-90mm, and the diameter is 8-25 mm. The outer surface of the dilatation catheter 2 is provided with scale markings.

The endoscope 3 is directly arranged on the outer side wall of the insertion end of the dilatation catheter 2 through an injection molding process or an endoscope channel is reserved inside the outer side wall of the insertion end of the dilatation catheter 2, the endoscope 3 and an external connector 8 are respectively connected through a lead 10, the external connector 8 is arranged in a groove of a second side wing part 7 at one end part of the dilatation catheter 2, the external connector 8 comprises a power supply 8-1 and a signal connector 8-2 electrically connected with the power supply 8-1, and a power supply switch 12 electrically connected with the power supply 8-1 is arranged on the outer surface of the second side wing part 7. The signal connector 8-2 is specifically a USB interface.

When the endoscope is used, the guide core 1 is placed in the inner cavity of the expansion catheter 2, the spring buckle 6 is clamped on the first side wing part 4 by pressing the push rod 5, so that the guide core 1 is tightly connected with the expansion catheter 2, a doctor does not need to fix the guide core and the expansion catheter by hands during operation, no gap exists, brain tissues cannot be scratched or damaged, the power switch 12 is turned on, the display screen of a hospital operating room is connected through the signal connector 8-2, and when the connection is successful, an image of the endoscope 3 can appear on the display screen; the assembled disposable tissue dilating catheter is placed into a human body, the arc chamfer surface 9 at the front end of the guide core 1 facilitates the placement of the disposable tissue dilating catheter, the arc chamfer surface 9 reduces the damage to brain tissue, scale marks on the dilating catheter 2 are observed, the dilated brain tissue is slowly placed, when blood rises in the inner cavity of the guide core 1 or a doctor sees a focus from a display screen, the push rod 5 is pressed, the guide core 1 is removed, the dilating catheter 2 is fixed, and the doctor places medical instruments to be used into the inner cavity of the dilating catheter 2 for surgical operation.

The utility model is a disposable product, and the sterilization is carried out by EO sterilization, irradiation sterilization, plasma sterilization, moist heat sterilization and other modes, so that the product is provided aseptically, secondary pollution is avoided, and the infection probability after operation is reduced.

Example 2

Otherwise, the scheme is the same as that of the embodiment 1, as shown in fig. 3, a medical cold light source belt 11 is annularly embedded on the outer side wall of the insertion end of the dilatation catheter 2, the medical cold light source belt 11 is electrically connected with the power supply 8-1, and the opening and closing of the medical cold light source belt 11 is controlled by the power supply switch 12.

The medical cold light source belt 11 is directly embedded on the outer side wall of the insertion end of the expansion conduit 2 through an injection molding process, a corresponding clamping groove is formed in an injection mold, the medical cold light source belt 11 and an electric wire connected with the same are placed in the clamping groove of the mold before the injection molding process is carried out, then injection molding is carried out, and one end of the electric wire is electrically connected with the power supply 8-1 in the second side wing part 7. Make medical cold light source area 11 produce cold light through pressing switch 12, can not have the dead angle and shine into focus department, the patient end can not have sheltering from of hand shadow, and the light source is sufficient definition good, utilizes medical cold light source area 11 and endoscope 3 to cooperate the use together, and the doctor can be more directly perceived, clear, accurate go to accomplish the operation.

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 the outside dilatation pipe (2) of leading core (1) including leading core (1) and adaptation, its characterized in that: the endoscope opening and closing device is characterized in that an endoscope (3) is embedded on the outer side wall of the insertion end of the expansion guide pipe (2), a first side wing part (4) is arranged at one end of the guide core (1), a second side wing part (7) is arranged at one end of the expansion guide pipe (2), a spring buckle (6) is arranged in the first side wing part (4) in an adaptive mode, an external connector (8) electrically connected with the endoscope (3) is arranged in the second side wing part (7), the first side wing part (4) is clamped with the second side wing part (7) in an adaptive mode through the spring buckle (6), a push rod (5) is arranged on the outer side of the first side wing part (4), the push rod (5) is connected with the spring buckle (6) in an adaptive mode, and the first side wing part (4) and the second side wing part (7) are opened or locked by applying or releasing pressure to the spring buckle (6) through the push rod (5).

2. The disposable tissue dilation catheter according to claim 1, wherein: the external connector (8) comprises a power supply (8-1) and a signal connector (8-2) electrically connected with the power supply (8-1), and a power switch (12) electrically connected with the power supply (8-1) is arranged on the outer surface of the second side wing part (7).

3. The disposable tissue dilation catheter according to claim 2, wherein: the outer side wall of the insertion end of the expansion catheter (2) is annularly embedded with a medical cold light source belt (11), the medical cold light source belt (11) is electrically connected with a power supply (8-1), and the medical cold light source belt (11) is controlled to be opened and closed through a power switch (12).

4. The disposable tissue dilation catheter according to claim 1, wherein: the front end part of the guide core (1) extends out of the outer side of the dilating catheter (2), and the front end part of the guide core (1) is provided with an arc chamfer surface (9).

5. The disposable tissue dilation catheter according to claim 1, wherein: the outer wall of the guide core (1) is mutually attached to the inner wall of the dilatation catheter (2).

6. The disposable tissue dilation catheter according to claim 2, wherein: the signal connector (8-2) is a USB interface.

7. The disposable 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.

8. The disposable tissue dilation catheter according to claim 1, wherein: one end of the guide core (1) and one end of the dilating catheter (2) are both arranged in a horn shape.

9. The disposable tissue dilation catheter according to claim 1, wherein: the length of the guide core (1) and the dilation catheter (2) is 50-90mm, and the diameter is 8-25 mm.

10. The disposable tissue dilation catheter according to claim 1, wherein: the outer surface of the dilating catheter (2) is provided with scale marks.