CN111744062A

CN111744062A - Neurosurgical catheter

Info

Publication number: CN111744062A
Application number: CN202010681861.6A
Authority: CN
Inventors: 林军挺; 韩春燕; 林珈羽
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-15
Filing date: 2020-07-15
Publication date: 2020-10-09

Abstract

The invention provides a neurosurgery catheter, which comprises a catheter body, wherein the end of the catheter body is provided with a suction head, the end of the suction head is provided with a flexible sealing head, the side wall of the suction head, which is close to the flexible sealing head, is provided with a plurality of drainage holes, and the drainage holes are communicated with the inner cavity of the catheter body; the pipe body is used for being connected with the negative pressure adsorption device. The invention provides a neurosurgery catheter, which can ensure clean operation visual field by adopting a structure of a water-permeable flexible seal head and draining effusion at the contact position of the front end of the catheter by negative pressure of the flexible seal head on the premise of avoiding damaging blood vessels, nerves or brain tissues. In the preferred scheme, the structure of the arranged drip pipe is combined with the structure of the flexible sealing head, so that the effects of flushing, nerve and blood vessel separation operation and negative pressure regulation can be realized. The optical fiber structure can provide better illumination effect for the operation visual field or collect microscopic images of the operation visual field for assisting the operation process.

Description

Neurosurgical catheter

Technical Field

The invention relates to the field of catheter medical instruments, in particular to a neurosurgery catheter for craniocerebral operation.

Background

In the process of neurosurgery, the effusion near the surgical field needs to be attracted, and the existing attraction device is of a flat head structure, so that the blood vessel, the nerve or the brain tissue are easily damaged at partial positions. Chinese patent document CN103656842A describes a minimally invasive suction device for avoiding tissue damage during surgery, wherein one end of a suction tube is coaxially and hermetically connected with a smooth arc-shaped suction head, the suction head and the suction tube are connected together by a screw thread or a buckle, a plurality of suction holes are uniformly distributed at intervals at the end of the suction tube close to the suction head, and a connector is arranged at the other end of the suction tube. The problem that this scheme exists is that the arc attracts the position of head contact to be unable imbibition totally, leads to the hydrops of the surface of a wound to handle unclean, influences the operation effect. In the operation process, sometimes the nerve or the blood vessel is separated, different tools need to be replaced, and the operation is complicated. Chinese patent document CN201094642Y describes a nerve and blood vessel poking and attracting device. The suction device comprises a suction main pipe, wherein the front end of the suction main pipe is a slender suction pipe section, the rear end of the suction main pipe is a connecting section, the middle of the suction main pipe is a holding section, a suction hole penetrates through the whole length of the suction main pipe, a suction control hole communicated with the suction hole is formed in the side face of the holding section, a needle poking core is inserted into the suction control hole and the suction hole, the front end of the needle poking core is exposed out of the front end of the suction pipe section, and the rear end of the needle poking core is exposed out of the suction control hole. This structure enables a combination of the attracting and detaching operations. But the solution is difficult to overcome the drawbacks pointed out in CN 103656842A. During operation, it is sometimes necessary to perform a flushing operation.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a neurosurgery catheter which can attract effusion at the contact position of the front end of the catheter on the premise of not damaging blood vessels, nerves or brain tissues and ensure clean operation visual field. In a preferred embodiment, the flushing operation can also be carried out. And can also complete the operation of separating nerves and blood vessels. And the operation is convenient and the structure is compact.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a neurosurgery catheter comprises a catheter body, wherein the end of the catheter body is provided with a suction head, the end of the suction head is provided with a flexible sealing head, the side wall of the suction head, close to the flexible sealing head, is provided with a plurality of drainage holes, and the drainage holes are communicated with the inner cavity of the catheter body;

the pipe body is used for being connected with the negative pressure adsorption device.

In the preferred scheme, the flexible sealing head is made of flexible micropore materials, the flexible sealing head is provided with a plurality of micropores, and the outer wall and the inner cavity of the suction head are communicated through the micropores.

In a preferred scheme, the flexible seal head is made of flexible porous rubber, flexible porous silica gel, flexible porous plastic or a combination of one or more of the materials.

In a preferred scheme, the flexible seal head is a convex curved surface.

In a preferred scheme, a water dropping pipe is further arranged in the pipe body and is used for being connected with the flushing device;

the middle part of the flexible seal head is provided with an opening, the opening is used for allowing the water dropping pipe to pass through, and when the water dropping pipe does not pass through, the opening is in a closed state.

In the preferred scheme, the suction head is connected with the end head of the tube body through threads, buckles or welding.

In the preferred scheme, a plurality of flexible ribs are arranged between the inner wall of the suction head and the flexible seal head, the bottoms of the ribs are fixedly connected with the flexible seal head, the side surfaces of the ribs are fixedly connected with the inner wall of the suction head, the ribs are distributed along the circumference, the drainage holes are positioned between the ribs, and the opening in the middle of the flexible seal head is a radiation hole.

In a preferable scheme, the drip pipe penetrates into the pipe body from the side wall of the pipe body, an insertion hole is formed in the side wall of the pipe body, a gap is formed between the insertion hole and the drip pipe, and the gap is used for an operator to adjust negative pressure in the pipe body by plugging.

In a preferred scheme, the outer wall of the drip pipe is also provided with an expanded part for plugging the insertion hole so as to limit the penetrating length of the drip pipe;

the front end of the drip pipe is of a round head or a chamfered pointed structure.

In a preferable scheme, a plurality of strands of optical fibers are further arranged on the outer wall of the tube body, an optical fiber bundle is led out from the side wall of the tube body after the optical fibers are collected, and the optical fiber bundle is used for being connected with a light source or the light source and an image acquisition device.

The invention provides a neurosurgery catheter, which can ensure clean operation visual field by adopting a structure of a water-permeable flexible seal head and draining effusion at the contact position of the front end of the catheter by negative pressure of the flexible seal head on the premise of avoiding damaging blood vessels, nerves or brain tissues. In the preferred scheme, the structure of the arranged drip pipe is combined with the structure of the flexible sealing head, so that the effects of flushing, nerve and blood vessel separation operation and negative pressure regulation can be realized. The optical fiber structure can provide better illumination effect for the operation visual field or collect microscopic images of the operation visual field for assisting the operation process.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a schematic front view of the present invention.

FIG. 2 is a schematic view of the flushing or unplugging operation of the present invention.

Fig. 3 is a schematic view of the structure of the insertion hole of the present invention.

FIG. 4 is a schematic sectional view A-A of FIG. 1.

Fig. 5 is a bottom view of fig. 1.

Fig. 6 is a schematic cross-sectional view of a drip tube.

In the figure: the device comprises a tube body 1, optical fibers 2, an optical fiber bundle 3, a suction head 4, a drainage hole 5, a flexible seal head 6, a radiation port 61, a rib 7, a water dropping pipe 8, an expansion part 81, an inner tube body 82, an outer tube body 83, an insertion hole 9, a back groove 91 and a light source 10.

Detailed Description

As shown in fig. 1 to 5, a neurosurgery catheter comprises a catheter body 1, wherein an end of the catheter body 1 is provided with a suction head 4, the end of the suction head 4 is provided with a flexible seal head 6, a plurality of drainage holes 5 are formed in the side wall of the suction head 4, which is close to the flexible seal head 6, and the drainage holes 5 are communicated with an inner cavity of the catheter body 1;

the pipe body 1 is used for being connected with a negative pressure adsorption device. With the structure, under the action of negative pressure, liquid can pass through the flexible sealing head 6, so that the problem that the end of the suction head 4 in the prior art can not be used for drainage is solved, the cleanness of the operation visual field is ensured, the operation is convenient, and the structure of the flexible sealing head 6 is adopted, so that the blood vessel, the nerve or the brain tissue can not be damaged.

The preferable scheme is as shown in fig. 4 and 5, the flexible sealing head 6 is made of flexible micropore materials, the flexible sealing head 6 is provided with a plurality of micropores, and the outer wall and the inner cavity of the suction head 4 are communicated through the micropores. The aperture of the micropore is 0.01-0.5 mm. Usually the cells are obtained by means of foaming.

In the preferred scheme, the flexible end socket 6 is flexible porous rubber, flexible porous silica gel, flexible porous plastic or a combination of one or more of the above materials. The flexible cellular plastic in this example is preferably a flexible polyurethane.

In a preferred scheme, as shown in fig. 1, the flexible seal head 6 is a convex curved surface.

In a preferred scheme, as shown in fig. 1 and 2, a water dropping pipe 8 is further arranged in the pipe body 1, and the water dropping pipe 8 is used for being connected with a flushing device; the operation visual field is convenient to wash. The preferred drip tube 8 is a flexible composite tube, such as a double layer tube, one layer being a glass tube and the other layer being acrylic or polytetrafluoroethylene. Preferably, as shown in fig. 6, the inner tube 82 is a glass tube, and the outer tube 83 is acrylic PMMA, so that a flexible glass tube with a certain toughness is formed. The operation is very convenient. The front end of the drip pipe 8 is of a round head or a chamfered pointed structure according to different purposes. The beveled tip structure is used for the poking-off of nerves and blood vessels in special occasions, such as the condition of slight adhesion.

In a preferable scheme, an opening is formed in the middle of the flexible sealing head 6, the opening is used for allowing the water dropping pipe 8 to pass through, and when the water dropping pipe 8 does not pass through, the opening is in a closed state. The opening is used for the water dropping pipe 8 to penetrate out and can also be used for liquid inlet during suction.

In a preferable scheme, the suction head 4 is connected with the end head of the tube body 1 through threads, buckles or welding.

In a preferable scheme, as shown in fig. 1, 2 and 4, a plurality of flexible ribs 7 are arranged between the inner wall of the suction head 4 and the flexible sealing head 6, the bottoms of the ribs 7 are fixedly connected with the flexible sealing head 6, the side surfaces of the ribs 7 are fixedly connected with the inner wall of the suction head 4, the ribs 7 are distributed along the circumference, the drainage holes 5 are positioned between the ribs 7, and the top ends of the inner sides of the arranged ribs 7 are combined into a conical or circular-arc structure so as to guide the insertion of the drip pipe 8. The ribs 7, in addition to having the effect of connecting the suction head 4 to the flexible closure head 6, can also be used to resist deformation of the flexible closure head 6. It is further preferred that the ribs 7 are arranged to deform the ribs 7 when the drip tube 8 is inserted, the deformed ribs 7 blocking the drainage holes 5 to some extent, thereby improving the drainage effect from the opening.

Preferably, as shown in fig. 4 and 5, the opening in the middle of the flexible end socket 6 is a radiation port 61. The radial opening 61 is formed by radially cutting at the opening, so that the drip pipe 8 can pass through the radial opening, and the radial opening 61 is closed by itself after the drip pipe 8 is retracted. Preferably, the diameter of the radiation opening 61 is smaller than the diameter of the flexible closure 6. The diameter of the radiation opening 61 is 1/4-2/3 of the diameter of the flexible seal head 6.

In a preferred embodiment, as shown in fig. 1 to 3, the drip pipe 8 penetrates into the pipe body 1 from the side wall of the pipe body 1, an insertion hole 9 is formed in the side wall of the pipe body 1, and a gap is formed between the insertion hole 9 and the drip pipe 8 and used for an operator to adjust the negative pressure in the pipe body 1 by plugging. Preferably, a back groove 91 is further provided at an upper end of the insertion hole 9, and a diameter of the back groove 91 is substantially the same as an outer diameter of the drip pipe 8, so that the drip pipe 8 is easily inserted into the back groove 91, thereby facilitating an operator to block the insertion hole 9 with fingers.

In a preferred embodiment, as shown in fig. 2, an enlarged portion 81 is further provided on the outer wall of the drip pipe 8 for blocking the insertion hole 9 to limit the penetration length of the drip pipe 8. The holding of the drip tube 8 is also facilitated.

In a preferred embodiment, as shown in fig. 1, 2, 4 and 5, a plurality of optical fibers 2 are further disposed on the outer wall of the tube 1, the optical fibers 2 are bundled to lead out an optical fiber bundle 3 from the side wall of the tube 1, and the optical fiber bundle 3 is used for connecting with a light source 10 or a part of the optical fibers and the light source 10 and a part of the optical fibers and an image acquisition device. With this configuration, illumination can be provided easily or the acquisition of a microscopic image of the surgical field can be facilitated.

As an example, in FIGS. 1 and 2, the diameter of the pipe body is 2 to 5mm, and the outer diameter of the drip pipe 8 is 0.2 to 3 mm. When the device is used, the tube body is connected with the negative pressure suction device, the drip tube 8 is connected with the flushing device, and the optical fiber 2 is connected with the light source 10 and the image acquisition device. The drip pipe 8 penetrates into the pipe body. After the test is correct, the surgical part is entered, when suction is needed, the negative pressure suction device is started, and the negative pressure is used for sucking the effusion in the surgical field. The size of the negative pressure is controlled by plugging the insertion hole 9 by fingers. When the accumulated liquid at the position of the flexible end enclosure 6 needs to be sucked, the drip pipe 8 slightly presses the rib 7 to deform, so that the sucking effect from the flexible end enclosure 6 is improved. When the operation part needs to be washed, the washing device is started, and the end of the drip pipe 8 penetrates out of the flexible seal head 6, so that the operation part can be washed. When it is necessary to remove a nerve or a blood vessel, the drip tube 8 is completely inserted into the tube body 1 until the enlarged portion 81 comes into contact with the insertion hole 9. Then the end of the dripping pipe 8 is operated to pull the nerves and blood vessels away, and the dripping pipe 8 has enough flexibility to avoid damaging the nerves, blood vessels and brain tissues due to the fact that the middle position of the dripping pipe 8 is held by the flexible sealing head 6 and the rib 7 and matched with the composite structure of the dripping pipe 8. The invention realizes the effect of avoiding damaging nerves, blood vessels and brain tissues by a compact structure, can conveniently realize the operations of flushing, sucking and poking away the nerves and the blood vessels by one tool, and is very convenient to use.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

1. A neurosurgical catheter comprises a catheter body (1), and is characterized in that: the end of the tube body (1) is provided with a suction head (4), the end of the suction head (4) is provided with a flexible seal head (6), the side wall of the suction head (4) close to the flexible seal head (6) is provided with a plurality of drainage holes (5), and the drainage holes (5) are communicated with the inner cavity of the tube body (1);

the pipe body (1) is used for being connected with a negative pressure adsorption device.

2. A neurosurgical catheter according to claim 1 wherein: the flexible sealing head (6) is made of flexible micropore materials, the flexible sealing head (6) is provided with a plurality of micropores, and the outer wall and the inner cavity of the suction head (4) are communicated with each other through each micropore.

3. A neurosurgical catheter according to claim 2 wherein: the flexible seal head (6) is made of flexible porous rubber, flexible porous silica gel, flexible porous plastic or a combination of one or more of the materials.

4. A neurosurgical catheter according to claim 1 wherein: the flexible seal head (6) is a convex curved surface.

5. A neurosurgical catheter according to any one of claims 1 to 4, wherein: a water dropping pipe (8) is also arranged in the pipe body (1), and the water dropping pipe (8) is used for being connected with a flushing device;

an opening is formed in the middle of the flexible sealing head (6), the opening is used for allowing the water dripping pipe (8) to pass through, and when the water dripping pipe (8) does not pass through, the opening is in a closed state.

6. A neurosurgical catheter according to claim 5 wherein: the suction head (4) is connected with the end of the tube body (1) through threads, buckles or welding.

7. A neurosurgical catheter according to claim 5 wherein: be equipped with a plurality of flexible muscle pieces (7) between the inner wall of attracting head (4) and flexible head (6), muscle piece (7) bottom and flexible head (6) fixed connection, the side of muscle piece (7) and the inner wall fixed connection who attracts head (4), muscle piece (7) distribute along the circumference, drainage hole (5) are located between muscle piece (7), and the opening in flexible head (6) middle part is radiation mouth (61).

8. A neurosurgical catheter according to claim 5 wherein: the side wall of body (1) is penetrated to interior from body (1) to drip (8), is equipped with patchhole (9) at the lateral wall of body (1), is equipped with the space between patchhole (9) and drip (8), the space is used for operating personnel to utilize the shutoff to adjust the negative pressure in body (1).

9. A neurosurgical catheter according to claim 8, wherein: the outer wall of the drip pipe (8) is also provided with an expansion part (81) for plugging the insertion hole (9) so as to limit the penetrating length of the drip pipe (8);

the front end of the drip pipe (8) is of a round head or a chamfered pointed structure.

10. A neurosurgical catheter according to claim 1 wherein: the outer wall of the tube body (1) is further provided with a plurality of strands of optical fibers (2), the optical fiber bundles (3) are led out from the side wall of the tube body (1) after the optical fibers (2) are collected, and the optical fiber bundles (3) are used for being connected with the light source (10) or the light source (10) and the image acquisition device.