CN212369413U

CN212369413U - Sacculus vena cava cannula

Info

Publication number: CN212369413U
Application number: CN202020690503.7U
Authority: CN
Inventors: 陈巍; 田海; 张春风; 孙露; 刘开宇; 蒋树林
Original assignee: Harbin Medical University
Current assignee: Harbin Engineering University; Harbin Medical University
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-01-19
Anticipated expiration: 2030-04-29

Abstract

The utility model belongs to the technical field of medical appliances, and discloses a sacculus vena cava cannula, the front end of which is provided with a sacculus which is communicated with an injector through a thin catheter passage, and the sacculus is arranged in the vena cava; a vein cannula is further integrally arranged between the balloon and the vein cavity, and a side hole at the front end of the vena cava cannula is formed in the tail end of the vein cannula. By applying the utility model in the extracorporeal circulation operation process of cardiac surgery, the step of the vena cava crossing blocking belt when extracorporeal circulation is established in the previous cardiac surgery can be saved, the operation time can be greatly shortened, and the risk of side damage to the heart part caused by the upper and lower vena cava crossing blocking belt can be avoided; and to the upper and lower vena cava cross block and take the department to exist the adhesion and to try to go on the condition such as the open area of being not convenient for too much of minimal access cardiac surgery art, the utility model discloses can make the art person save to peel off the trouble and the risk that the decomposition or applied extraordinary intubate means such as femoral vein intubate and set up the extracorporeal circulation and bring.

Description

Sacculus vena cava cannula

Technical Field

The utility model belongs to the technical field of medical instrument, especially, relate to a sacculus vena cava cannula.

Background

Currently, the current state of the art commonly used in the industry is such that: when extracorporeal circulation is established in the cardiac surgery operation, intubation is needed to be carried out at the proximal ends of the upper and lower vena cava, the blocking belt is used for surrounding the vena cava outside the blood vessel at the intubation position of the upper and lower vena cava, and the blocking belt is needed to surround the intubation tube to block the upper and lower vena cava before the cardiac surgery is carried out by opening the heart, so that blood in the return cardiac vein enters the extracorporeal circulation from the upper and lower vena cava intubation, but does not enter the heart, and further, the bloodless and clear cardiac surgery field is ensured. However, the current clinical application of the blocking band to block the superior and inferior vena cava not only increases the operation time, but also causes side damage to the heart part when the blocking band is over-blocked, and for the cases that the superior and inferior vena cava over-blocked part has adhesion, and the minimally invasive cardiac surgery with small space, etc., the superior and inferior vena cava over-blocking band cannot be completed, and further the blocking of the vena cava cannot be guaranteed.

In summary, the problems of the prior art are as follows: at present, the condition that the blocking belt of the upper and lower venae cavae has adhesion, small space and the like in the position of the blocking belt of the upper and lower venae cavae is not beneficial to completing the blocking of the venae cavae by a mode of clinically applying the blocking belt to block the upper and lower venae cavae.

The difficulty of solving the technical problems is as follows: at present, clinically, the main solutions for the adhesion existing at the upper and lower vena cava overblocking bands are mainly stripping and adhesion decomposition in the operation for anatomical exposure, and the main solutions for the minimally invasive cardiac surgery without an overblocking band with enough space are mainly that femoral vein cannulas establish extracorporeal circulation, however, the methods all have a plurality of risks of causing heart rupture, femoral vein cannulas causing local injuries such as femoral veins and the like when stripping and adhesion decomposition are carried out in the operation process.

The significance of solving the technical problems is as follows: the utility model discloses the front end at the required pipeline of vena cava intubate of novelty has increased sacculus device, will the utility model discloses insert the sacculus for the pipe through connecting the sacculus behind the nearly heart end of inferior vena cava, reach promptly and block the blood that the vena cava flows back to the heart, make the blood of returning heart go back to flow into the extracorporeal circulation machine through the vena cava intubate completely and carry out the extracorporeal circulation outside, still can play through the sacculus of inflation and support fixed prevent that the pipeline from deviating from the effect of vena cava, thereby saved the step that the vena cava crosses the block area when establishing the extracorporeal circulation in the existing heart surgery, the operation time has reduced greatly promptly, the risk that brings the collateral damage for heart part when also having avoided the upper and lower vena cava crossing the block area, there is the adhesion and the circumstances such as minimal access heart surgery of proposing to go forward in the department of blocking area simultaneously, the utility model discloses can make the operator peel off and decompose or use the unconventional means of inserting such as femoral vein intubate The trouble and risk of coming.

SUMMERY OF THE UTILITY MODEL

To the problems existing in the prior art, the utility model provides a sacculus vena cava cannula.

The utility model is realized in such a way that the front end of the sacculus vena cava cannula is provided with a sacculus which is communicated with an injector through a thin catheter passage, and the sacculus is arranged in the vena cava;

still integrative vein intubate that is provided with between sacculus and the vein chamber, vein intubate's end is provided with vena cava intubate front end side opening.

Further, the thin catheter adopts a balloon water injection pipe.

Furthermore, a supporting metal wire is arranged on the inner wall of the venous cannula.

Furthermore, the vena cava comprises a superior vena cava and an inferior vena cava which are arranged on the front side and the back side of the right atrium, a superior vena cava cannula is inserted in the superior vena cava, and an inferior vena cava cannula is inserted in the inferior vena cava.

To sum up, the utility model discloses an advantage and positive effect do: by applying the utility model in the extracorporeal circulation operation process of cardiac surgery, the step of the vena cava crossing blocking belt when extracorporeal circulation is established in the previous cardiac surgery can be saved, the operation time can be greatly shortened, and the risk of side damage to the heart part caused by the upper and lower vena cava crossing blocking belt can be avoided; and to the upper and lower vena cava cross block and take the department to exist the adhesion and to try to go on the condition such as the open area of being not convenient for too much of minimal access cardiac surgery art, the utility model discloses can make the art person save to peel off the trouble and the risk that the decomposition or applied extraordinary intubate means such as femoral vein intubate and set up the extracorporeal circulation and bring.

Drawings

FIG. 1 is a schematic structural view of an old-fashioned vena cava cannula commonly used in conventional cardiac surgery;

wherein, a straight-head pipe; b. a right-angle tube.

FIG. 2 is a schematic illustration of a prior art venous block using a prior art old fashioned venal caval cannula;

FIG. 3 is a structural view of the novel vena cava duct with an integrated water-injectable balloon of the present invention;

wherein, a schematic diagram of a straight-head vena cava duct with a balloon; b. schematic diagram of a right angle vena cava duct with a balloon.

Fig. 4 is a schematic view of a saccule vena cava cannula according to an embodiment of the present invention.

In the figure: 1. a superior vena cava cannula; 2. an inferior vena cava cannula; 3. a side hole at the front end of the vena cava cannula; 4. a balloon; 5. a balloon water injection tube; 6. a support wire; 7. the superior vena cava; 8. the inferior vena cava; 9. the right atrium; 10. an injector; 11. the belt is blocked.

Detailed Description

In order to further understand the contents, features and functions of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

To solve the problems existing in the prior art, the utility model provides a sacculus vena cava cannula, which is described in detail with reference to the attached figures 3 and 4.

Compared with the existing old-fashioned vena cava cannula in fig. 1, the blocking belt 11 needs to be bound on the superior vena cava 7 and the inferior vena cava 8 when the vena cava cannula in fig. 2 is applied, the saccule vena cava cannula provided by the embodiment in fig. 3, the front end of the saccule vena cava cannula is provided with the saccule 4, the syringe 10 is connected through the thin catheter passage 5, as shown in fig. 4, after the superior vena cava cannula 1 and the inferior vena cava cannula 2 of the superior vena cava 7 and the inferior vena cava 8 are carried out in the cardiac surgery extracorporeal circulation operation, the saccule 4 can be filled by injecting physiological saline.

The integral saccule 4 parts of the inferior vena cava cannula 2 and the superior vena cava cannula 1 are also communicated with a thin catheter passage 5 for water injection.

And a supporting metal wire 6 is also arranged in the tube wall of the inferior vena cava cannula 2 and the superior vena cava cannula 1 to prevent negative pressure from sucking the pipeline to be shriveled.

In the extracorporeal circulation operation of the cardiac surgery, after the superior vena cava 7 and the inferior vena cava 8 are intubated, the saccule 4 can be filled by injecting physiological saline, so that the aims of preventing the return heart blood from entering the right atrium 9 and ensuring the blood to completely enter the extracorporeal circulation through the vena cava are fulfilled, and the expanded saccule 4 can play a role in supporting and fixing to prevent the pipeline from falling out of the vena cava. The sacculus 4, the superior vena cava cannula 1 and the inferior vena cava cannula 2 are integrated, the sacculus 4 is connected with a sacculus water injection pipe 5 for water injection, and supporting metal wires 6 are also arranged in the pipe walls of the superior vena cava cannula 1 and the inferior vena cava cannula 2. The sacculus 4 can be connected with an injector 10 through a passage of the sacculus water injection pipe 5, when extracorporeal circulation is established in a cardiac surgery, after the sacculus 4 is inserted into the proximal ends of the superior vena cava 7 and the inferior vena cava 8, the sacculus is expanded after physiological saline is injected by the injector 10 through a catheter connected with the sacculus 4, and therefore blood returning to the right atrium 9 from the superior vena cava 7 and the inferior vena cava 8 is blocked, the returned blood completely flows into an extracorporeal circulation machine through a vena cava cannula for extracorporeal circulation, and the expanded sacculus 4 can also play a role in supporting and fixing to prevent a pipeline cavity from dropping out of the vein.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims

1. The sacculus vena cava cannula is characterized in that the front end of the sacculus vena cava cannula is provided with a sacculus which is communicated with an injector through a thin catheter passage, and the sacculus is arranged in a vena cava;

2. The balloon vena cava cannula according to claim 1, wherein the thin catheter employs a balloon water injection tube.

3. The balloon vena cava cannula according to claim 1, wherein a support wire is mounted on the interior wall of the vena cava cannula.

4. The balloon vena cava cannula according to claim 1, wherein the vena cava comprises a superior vena cava and an inferior vena cava disposed on both anterior and posterior sides of a right atrium, wherein the superior vena cava is cannulated with a superior vena cava, and wherein the inferior vena cava is cannulated with an inferior vena cava.