CN211096939U - Self-developing rapid exchange balloon dilatation catheter - Google Patents
Self-developing rapid exchange balloon dilatation catheter Download PDFInfo
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- CN211096939U CN211096939U CN201921879378.8U CN201921879378U CN211096939U CN 211096939 U CN211096939 U CN 211096939U CN 201921879378 U CN201921879378 U CN 201921879378U CN 211096939 U CN211096939 U CN 211096939U
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Abstract
The utility model relates to a quick exchange sacculus expansion pipe of self-developing, sacculus expansion pipe includes the sacculus, the head end pipe, the outer tube, the inner tube, the hypo pipe, the pipe seat, the distal end and the head end union coupling of inner tube, the near-end and the outer tube distal end of inner tube are connected, and the sacculus distal end is in the same place with inner tube and head end junction welding, and the near-end and the hypo pipe distal end of outer tube are connected, and the quick exchange mouth is located outer tube inner tube junction, the sacculus is tensile, the inflation shaping for the sacculus pipe, the tubular product of sacculus pipe is the semi-compliance macromolecular material that includes the developer. The balloon has developing property, so that the inflation degree of the balloon can be accurately displayed, and the problems are fundamentally avoided; and by optimizing the preparation process of the balloon, the balloon is ensured to have an ideal blasting range after the developer is added.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to quick exchange sacculus expansion pipe of self-developing.
Background
Stroke is a global health problem affecting the disabled life, China is the first major country of stroke attack worldwide, and with the increase of aging population, new stroke patients are continuously rising every year. Intracranial arterial stenosis is the main reason of attack and recurrence of cerebral apoplexy, uses the saccule dilatation pipe to carry out saccule dilatation to intracranial arterial stenosis, has the function of recovering its blood circulation.
The existing balloon dilatation catheter is characterized in that two developing rings are forged and pressed on the inner tube, the balloon dilatation catheter plays a role in positioning, after the balloon reaches a diseased blood vessel part, liquid is injected into a balloon injection cavity to fill the balloon, the fully filled balloon can generate high pressure due to the incompressible performance of the liquid, so that the narrow blood vessel can be dilated, after the dilatation is completed, a doctor sucks the liquid in the balloon quickly, and finally the whole balloon catheter is withdrawn from the body of a patient and the expansion degree of the balloon is expressed by injecting a contrast medium.
The prior art has the following disadvantages: in the operation, because the time is tense, the phenomenon of insufficient air exhaust of the balloon often occurs, so that when the developer is injected, air bubbles exist in the balloon, the development is incomplete, the filling state of an operator to the balloon is unclear, and potential safety hazards are brought. And incomplete discharge of the contrast agent can also cause liquid drop residue, so that the retraction profile of the balloon is enlarged, and the operation process is influenced.
Disclosure of Invention
In order to solve the problem, the utility model provides a self-developing rapid exchange balloon dilatation catheter.
The technical scheme of the utility model:
a self-developing rapid exchange balloon dilatation catheter comprises a balloon, a head end pipe, an outer pipe, an inner pipe, a hypotube and a catheter seat, wherein the far end of the inner pipe is connected with the head end pipe; the balloon is formed by stretching and blowing a balloon tube, and the tube of the balloon tube is made of a semi-compliant polymer material containing a developer.
By adopting the design, the balloon has developing property, and the inflation degree of the balloon can be accurately displayed; thereby fundamentally preventing the above problems from occurring. Considering that the addition of the developer can influence the bursting pressure of the balloon, and the bursting pressure has very important function in the use of the balloon, particularly the intracranial balloon, and the higher bursting pressure can ensure the safety of the operation; the preparation technology of the balloon is further optimized, and the ideal blasting range is achieved.
And a buffer tube is connected between the hypotube and the catheter seat.
The developer is any one of barium salt, metal tungsten and metal bismuth.
The semi-compliant polymer material is nylon.
The manufacturing method of the balloon dilatation catheter comprises the steps of manufacturing the balloon, the head end pipe, the outer pipe, the inner pipe, the hypotube and the catheter seat respectively, and combining and connecting the balloon, the head end pipe, the outer pipe, the inner pipe, the hypotube and the catheter seat to form the balloon dilatation catheter; the forming process of the balloon comprises the following steps:
1) preparation of balloon tube
Preparing a semi-compliant polymer material, a developer and an auxiliary agent → mixing → conveying and feeding → forced feeding → a tapered double-screw extruder → an extrusion die → a sizing sleeve → a spray vacuum sizing box → a soaking and cooling water tank → an ink printer → a caterpillar tractor → a cutter lifting and cutting machine → a pipe stacking rack → finished product detection and packaging.
2) Drawing of blastocysts
And clamping the balloon tube on a material tube drawing machine, drawing the balloon tube at 110-140 ℃, and preparing for balloon forming, wherein the unstretched section forms a balloon main body.
3) And placing the balloon embryo into a balloon forming machine and a mold, and stretching and blowing the balloon tube at 110-140 ℃ to form the balloon with the required specification in the mold with the specified size.
The utility model has the advantages of reasonable design and ingenious conception, and can accurately display the inflation degree of the saccule by utilizing the developing property of the saccule, thereby fundamentally avoiding the problems; and by optimizing the preparation process of the balloon, the balloon is ensured to have an ideal blasting range after the developer is added.
Drawings
Fig. 1 is a schematic structural view of a self-visualizing rapid exchange balloon dilation catheter.
FIG. 1 shows a head end tube; 2, a balloon; 3, inner pipe; 4, an outer tube; 5, a hypotube; 6, a buffer tube; 7, a catheter hub.
Detailed Description
As shown in the figure, the self-developing rapid exchange balloon dilatation catheter comprises a balloon 2, a head end pipe 1, an outer pipe 4, an inner pipe 3, a hypotube 5 and a catheter seat 7, wherein the far end of the inner pipe 3 is connected with the head end pipe 1, the near end of the inner pipe 3 is connected with the far end of the outer pipe 4, the far end of the balloon 2 is welded with the joint of the inner pipe 3 and the head end pipe 1, the near end of the outer pipe 4 is connected with the far end of the hypotube 5, and a rapid exchange port is positioned at the joint of the outer pipe 4 and the inner pipe 3; the balloon 2 is formed by stretching and blowing a balloon tube, and the tube of the balloon tube is made of a semi-compliant polymer material containing a developer; a buffer tube 6 is also connected between the hypotube 5 and the catheter seat 7; the developer is any one of barium salt, metal tungsten and metal bismuth; the semi-compliant polymer material is nylon.
The method for manufacturing the balloon dilatation catheter comprises the steps of manufacturing the balloon 2, the head end tube 1, the outer tube 4, the inner tube 3, the hypotube 5, the buffer tube 6 and the catheter seat 7, and connecting the components in combination to form the balloon dilatation catheter.
Preparing a sacculus tube.
Preparing a semi-compliant polymer material, a developer and an auxiliary agent → mixing → conveying and feeding → forced feeding → a tapered double-screw extruder → an extrusion die → a sizing sleeve → a spray vacuum sizing box → a soaking and cooling water tank → an ink printer → a caterpillar tractor → a cutter lifting and cutting machine → a pipe stacking rack → finished product detection and packaging.
Example 1
Clamping the balloon tube on a material tube drawing machine, drawing the balloon tube at the temperature of 100 ℃ and 110 ℃, wherein the unstretched section forms a balloon main body and prepares for balloon forming; placing the balloon embryo into a balloon forming machine and a mold, stretching and blowing the balloon tube at the temperature of 100-110 ℃ to form the balloon A with the required specification in the mold with the specified size.
Example 2
Clamping the balloon tube on a material tube drawing machine, drawing the balloon tube at the temperature of 110-; placing the balloon embryo into a balloon forming machine and a mold, stretching and blowing the balloon tube at the temperature of 110-140 ℃ to form the balloon B with the required specification in the mold with the specified size.
Example 3
Clamping the balloon tube on a material tube drawing machine, drawing the balloon tube at the temperature of 140 ℃ and 150 ℃, wherein the unstretched section forms a balloon main body and prepares for balloon forming; placing the balloon embryo into a balloon forming machine and a mold, stretching and blowing the balloon tube at 140-150 ℃ to form the balloon C with the required specification in the mold with the specified size.
The above examples 1, 2, 3; the same batch of balloon tubes was used.
The sample balloon A, B, C was separately sampled for burst pressure testing, and the test data are shown in the following table:
| sample (I) | Blasting pressure/atm | Sample size/pcs |
| Balloon A | 17.0 | 22 |
| Saccule B | 23.0 | 22 |
| Saccule C | 19.0 | 22 |
From the above table, it can be known that the temperature has a significant influence on the burst pressure performance, and data are verified, and the burst pressure performance of the balloon reaches the best at the temperature of 110-140 ℃, so that the requirement of the balloon during use is met.
Because of the limited character expression, there exists an infinite concrete structure objectively, for those skilled in the art, without departing from the principle of the present invention, a plurality of improvements, decorations or changes can be made, and the above technical features can be combined in a proper way; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.
Claims (4)
1. A self-developing rapid exchange balloon dilatation catheter comprises a balloon, a head end pipe, an outer pipe, an inner pipe, a hypotube and a catheter seat, wherein the far end of the inner pipe is connected with the head end pipe, the near end of the inner pipe is connected with the far end of the outer pipe, the far end of the balloon is welded with the joint of the inner pipe and the head end, the near end of the outer pipe is connected with the far end of the hypotube, and a rapid exchange port is positioned at the joint of the outer pipe and the inner pipe; the balloon is formed by stretching and blowing a balloon tube, and the tube of the balloon tube is made of a semi-compliant polymer material containing a developer.
2. The self-visualizing rapid exchange balloon dilation catheter of claim 1 wherein a buffer tube is further disposed between the hypotube and the catheter hub.
3. The self-visualizing rapid exchange balloon dilation catheter of claim 1 wherein the visualization agent is any one of barium salt, metallic tungsten, metallic bismuth.
4. The self-visualizing rapid exchange balloon dilation catheter according to claim 1 wherein said semi-compliant polymeric material is nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921879378.8U CN211096939U (en) | 2019-11-04 | 2019-11-04 | Self-developing rapid exchange balloon dilatation catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921879378.8U CN211096939U (en) | 2019-11-04 | 2019-11-04 | Self-developing rapid exchange balloon dilatation catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211096939U true CN211096939U (en) | 2020-07-28 |
Family
ID=71724129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921879378.8U Active CN211096939U (en) | 2019-11-04 | 2019-11-04 | Self-developing rapid exchange balloon dilatation catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211096939U (en) |
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2019
- 2019-11-04 CN CN201921879378.8U patent/CN211096939U/en active Active
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