CN213789482U

CN213789482U - Medical arterial cannula

Info

Publication number: CN213789482U
Application number: CN202022373200.5U
Authority: CN
Inventors: 钱向阳; 畅怡
Original assignee: Fuwai Hospital of CAMS and PUMC
Current assignee: Fuwai Hospital of CAMS and PUMC
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-07-27
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a medical artery intubation tube, which comprises a tube body, wherein the tube body comprises a head part with a blind end, and the head part is provided with a near-end diversion hole and a far-end diversion hole which are respectively opened at the left side and the right side of the head part; the method is characterized in that: and an adjusting piece for adjusting the size of the outlet of the far-end flow guide hole is arranged at the far-end flow guide hole. The utility model provides a pair of medical artery intubate is through setting up the regulating part in distal end water conservancy diversion hole department for the egress opening size in distal end water conservancy diversion hole is adjustable, consequently adjusts the size of egress opening through the regulating part, can change the distal end blood supply's the flow that fills as required, prevents that the distal end from filling not enough or filling excessively, thereby reduces the operation risk.

Description

Medical arterial cannula

Technical Field

The utility model relates to the field of medical treatment, especially, relate to a medical artery intubate.

Background

Intubation in the peripheral artery to perform extracorporeal circulation is a necessary operation for most aortic surgery; the traditional peripheral arterial cannula is a plastic tube with different diameter specifications, the arterial cannula is generally in one-way perfusion, and the blood vessel at the far end of the cannula is blocked until the operation is finished; because heart large vessel surgery is usually very complicated, the blocking time of the far-end vessel is long, and the far-end limb can generate a large amount of anaerobic glycolysis products such as lactic acid and the like due to long ischemia time, even thrombosis and functional damage of far-end tissues and organs, thereby causing obvious adverse effects on postoperative rehabilitation of patients.

Therefore, an arterial cannula capable of realizing bidirectional perfusion also appears at present, for example, patent CN 206167589U discloses a bidirectional perfusion arterial cannula for extracorporeal circulation, which comprises a tube body, wherein the tube body comprises a tube body head with a blind end, a tube body front part, a tube body middle part and a tube body tail part with a joint combined at the tail end, small diversion holes and large diversion holes which are respectively opened at symmetrical positions on two sides of the tube body head part are formed on the outer wall of the tube body head part, a snap ring is arranged on the outer wall of the tube body between the tube body head part and the tube body front part, a spiral spring embedded in the tube wall of the tube body is arranged in the middle part of the tube body, a tube core with the front end abutting against the blind end of the tube body head part is further arranged in the tube body, the outer wall of the tube core is tightly attached to the inner side surface of the middle part of the tube body, and a marking line which is parallel to the central axis of the tube body and is over against the center of the large diversion hole is formed on the outer wall of the tube body; the artery cannula can simultaneously carry out artery bidirectional blood supply, prevent ischemia and anoxia at the far end of the cannula part, and improve the safety of operation patients or in vitro life support patients.

However, different patients and different arterial vessels often have different perfusion flow requirements, even the same patient has different perfusion flow requirements during different operations, and because the same tube body is adopted for perfusion, the perfusion flow of the far-end blood supply can only be adjusted along with the near-end blood supply, and cannot be adjusted independently within a certain range, the condition of insufficient or excessive far-end perfusion is often caused, certain operation risks are caused, and meanwhile, the inconvenience in application is also caused.

The above technical problems need to be solved.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a medical arterial cannula, which can adjust the perfusion flow rate of the blood supply at the distal end, and prevent the distal end from perfusion insufficiently or excessively, thereby reducing the risk of the operation.

In order to achieve the purpose, the utility model provides a medical artery intubation tube, which comprises a tube body, wherein the tube body comprises a head part with a blind end, and the head part is provided with a near-end diversion hole and a far-end diversion hole which are respectively opened at the left side and the right side of the head part; and an adjusting piece for adjusting the size of the outlet of the far-end flow guide hole is arranged at the far-end flow guide hole.

As right the utility model discloses technical scheme's further improvement, the regulating part is flexible utricule, be equipped with the holding chamber that is used for the holding fluid in the flexible utricule, flexible utricule accessible fills fluid and inflation in the holding chamber.

As a further improvement, the flexible bag body is connected with a conduit, the inner end of the conduit is communicated with the holding cavity, and the outer end of the conduit is used for the fluid to flow in.

As a further improvement to the technical scheme of the utility model, the outer end of pipe is connected with a check valve.

As a further improvement to the technical scheme of the utility model, the outer end of pipe links to each other with the output of a fluid filler in order can dismantle the mode.

As a further improvement to the technical proposal of the utility model, the fluid filler is of an injector structure.

As right the utility model discloses technical scheme's further improvement, flexible utricule is the ring form, just the center pin of flexible utricule and the center pin in distal end water conservancy diversion hole are on same straight line.

As a further improvement to the technical scheme of the utility model, the outer wall at the body is fixed to flexible utricule.

As right the utility model discloses technical scheme's further improvement, flexible utricule is fixed in distal end water conservancy diversion hole, be equipped with the holding pipeline that is used for the holding pipe in the pipe wall of body.

Compared with the prior art, the utility model discloses following beneficial technological effect has:

the utility model provides a pair of medical artery intubate is through setting up the regulating part in distal end water conservancy diversion hole department for the egress opening size in distal end water conservancy diversion hole is adjustable, consequently adjusts the size of egress opening through the regulating part, can change the distal end blood supply's the flow that fills as required, prevents that the distal end from filling not enough or filling excessively, thereby reduces the operation risk.

The utility model provides high operation security also is favorable to reducing the operation treatment cost, and it accords with social needs, has stronger practicality, is favorable to promoting medical technology's further development.

Drawings

FIG. 1 is a schematic structural view of a first structure of the present invention;

FIG. 2 is a view taken along line A of FIG. 1;

fig. 3 is a schematic structural diagram of a second structure of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Example one

As shown in fig. 1 and 2: the embodiment provides a medical arterial cannula, which comprises a tube body 1, wherein the tube body 1 comprises a head part 2 with a blind end, and the head part 2 is provided with a near-end diversion hole 3 and a far-end diversion hole 4 which are respectively opened at the left side and the right side of the head part; the far-end diversion hole 4 is provided with an adjusting piece for adjusting the size of the outflow port.

The tube body 1 can be in an L shape, and the head 2 of the tube body 1 is the part which is arranged in the blood vessel when in use; "left" and "right" are based on the directions shown in FIG. 1; the near-end diversion hole 3 and the far-end diversion hole 4 are combined for bidirectional perfusion, and both the near-end diversion hole 3 and the far-end diversion hole 4 can be of circular hole structures; the proximal diversion hole 3 and the distal diversion hole 4 have an inflow port and an outflow port, and the direction of the arrows in fig. 1 is the direction of blood flow during perfusion.

The medical arterial cannula provided by the embodiment is mainly improved in that an adjusting part is additionally arranged; through setting up the regulating part in distal end water conservancy diversion hole 4 department for the egress opening size of distal end water conservancy diversion hole 4 is adjustable, consequently adjusts the size of egress opening through the regulating part, can change the perfusion flow of distal end blood supply as required, prevents that the distal end from perfusing inadequately or perfusing excessively, thereby reduces the operation risk. In specific implementation, the proximal end perfusion effect can be reflected according to upper limb blood pressure monitoring, and the distal end limb perfusion effect can be reflected according to lower limb blood pressure monitoring, so that the regulation is realized.

The regulating member can have various structures, for example, a miniature regulating valve can be adopted, and the regulating member can be externally operated after being led out through a lead. In order to reduce the cost, the adjusting member of the present embodiment employs a flexible capsule 5, and the flexible capsule 5 may be made of, for example, a silicone material; an accommodating cavity 5a for accommodating fluid is arranged in the flexible bag body 5, and the flexible bag body 5 can be expanded by filling the fluid into the accommodating cavity 5 a; due to the flexible material of the adjusting piece, when the pressure in the accommodating cavity 5a is increased, the volume of the accommodating cavity is increased, so that the flexible bag body 5 is expanded, the shielding area of the flexible bag body 5 on the outflow port of the far-end diversion hole 4 is increased, and the outflow port is reduced; the fluid used may be a liquid (e.g. saline) or a gas, although the safety of the liquid is high.

The flexible bag body 5 is connected with a conduit 6, the inner end of the conduit 6 is communicated with the accommodating cavity 5a, and the outer end of the conduit 6 is used for fluid to flow in; the catheter 6 is a medical hose and is a fluid conveying pipeline; the outer end of the conduit 6 can be connected with a one-way valve 7, and the one-way valve 7 enables fluid to flow into the accommodating cavity 5a in a one-way manner, so that backflow is prevented, and the use safety is improved; the outer end of the conduit 6 can be detachably connected with the output end of a fluid filler 8 whether a check valve 7 is arranged or not, and the fluid filler 8 stores fluid and can output the fluid under the action of pressure; for example, the fluid filler 8 may be of a syringe construction, which is simple and convenient to use.

In this embodiment, the flexible balloon 5 is circular, and a central axis of the flexible balloon 5 and a central axis of the distal diversion hole 4 are on the same straight line; the annular flexible bladder 5 is similar in shape to a lifebuoy; when the containing cavity 5a is filled with fluid, the flexible bag body 5 expands and deforms, so that the outflow port of the far-end diversion hole 4 is blocked to different degrees.

The flexible bag body 5 can be directly fixed on the outer wall of the pipe body 1, a fixing groove special for fixing the flexible bag body 5 can be arranged on the outer wall of the pipe body 1, or the part of the flexible bag body 5 can be directly bonded on the outer wall of the pipe body 1.

When the intubation is performed, a purse-string suture is firstly made on the artery wall, a small opening is cut in the purse-string suture, the intubation is sent in, the purse-string is tightened, and the flow guide holes on the two sides of the head end of the intubation are contained in the blood vessel.

Example two

As shown in fig. 3, the present embodiment provides a medical arterial cannula, which has a structure substantially identical to that of the arterial cannula shown in the first embodiment, and the difference is that: in this embodiment, the flexible balloon 5 is fixed in the far-end diversion hole 4, and the pipe wall of the pipe body 1 is provided with an accommodating pipeline 9 for accommodating the catheter 6; at the moment, the outer ring part of the flexible bag body 5 is jointed with the hole wall of the far-end diversion hole 4 and can be directly jointed with the hole wall of the far-end diversion hole 4; most of the guide pipe 6 is arranged in the accommodating pipeline 9, and can be regularly arranged, thereby facilitating the suture operation during the operation; this structure is therefore advantageous in improving the convenience and safety of the surgical operation.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A medical artery cannula comprises a tube body, wherein the tube body comprises a head part with a blind end, and the head part is provided with a near-end flow guide hole and a far-end flow guide hole which are respectively opened at the left side and the right side of the head part; the method is characterized in that: and an adjusting piece for adjusting the size of the outlet of the far-end flow guide hole is arranged at the far-end flow guide hole.

2. The medical arterial cannula according to claim 1, wherein: the regulating part is a flexible bag body, an accommodating cavity for accommodating fluid is arranged in the flexible bag body, and the flexible bag body can be expanded by filling the fluid into the accommodating cavity.

3. The medical arterial cannula according to claim 2, wherein: the flexible bag body is connected with a catheter, the inner end of the catheter is communicated with the accommodating cavity, and the outer end of the catheter is used for allowing fluid to flow in.

4. A medical arterial cannula according to claim 3, wherein: the outer end of the guide pipe is connected with a one-way valve.

5. A medical arterial cannula according to claim 3, wherein: the outer end of the conduit is removably connected to the output end of a fluid filler.

6. The medical arterial cannula according to claim 5, wherein: the fluid filler is of a syringe structure.

7. The medical arterial cannula according to any one of claims 2 to 6, wherein: the flexible bag body is in a circular ring shape, and the central shaft of the flexible bag body and the central shaft of the far-end diversion hole are on the same straight line.

8. The medical arterial cannula according to any one of claims 2 to 6, wherein: the flexible bag body is fixed on the outer wall of the pipe body.

9. A medical arterial cannula according to any of claims 3 to 6, wherein: the flexible bag body is fixed in the far-end diversion hole, and an accommodating pipeline for accommodating the catheter is arranged in the pipe wall of the pipe body.