The utility model relates to a double-balloon vertebral body dilating catheter which comprises a balloon assembly, a cannula assembly and a handle assembly. The cannula assembly comprises an outer tube, a support tube and two liquid injection channels, the outer tube is externally arranged on the outside of the support tube, the two liquid injection channels are arranged in a zone between the outer tube and the support tube, a support wire is inserted in the support tube, and two liquid outlet holes which are communicated with two liquid injection tubes in a one-to-one correspondence manner are formed in the outer tube; the balloon assembly comprises two balloons, and the two balloons are arranged at one end of the cannula assembly, encircle the outer tube to form two independent balloon cavities and are respectively communicated with the two liquid injection channels via the liquid outlet holes in the outer tube in a one-to-one correspondence manner; the handle assembly is arranged at the other end of the cannula cavity and is opposite to the balloon assembly. The double-balloon vertebral body dilating catheter has the advantages that a collapsed bone plate of a patient can be selectively supported by the two balloons, and accordingly the double-balloon vertebral body dilating catheter is applicable to various bone plate collapsing places and favorable for smooth surgery implementation.

A double balloon dilatation catheter vertebrae, characterized in that: the balloon assembly comprises a cannula assembly and the handle assembly, said sleeve assembly includes an outer tube, the support tube, and two liquid injection passage, it said an outer tube disposed outside of the support tube, the outer tube and the support tube region disposed between two injection fluid channels within the support tube insertion support wire, with two separate two liquid injection passage of the outer tube a liquid orifice communicating one correspondence; balloon assembly comprises two balloons, the balloon disposed at both end of the sleeve assembly, and an outer tube surrounding the balloon to form two separate cavities, two a balloon in communication respectively correspond to two holes through the liquid injection liquid passage on the outer tube; the handle assembly is provided at the other end of the sleeve assembly relative to the balloon component.
2. The double balloon according to claim 1 vertebral dilatation catheter, characterized in that: the two pouring channels is two perfusion catheter.
3. The vertebral 2 double balloon dilatation catheter according to claim, characterized in that: the arc-shaped radial cross-section of two liquid injection tube, one side of the arc-shaped concave toward the perfusion catheter support tube.
The double balloon of claim 1, wherein the vertebral dilatation catheter, characterized in that: said outer tube is provided between the support tube and an outer region of the separator tube and the support tube between an outer liquid injection passage and core tube liquid injection passage, wherein one of the outer tube of the liquid supply hole and the outer liquid injection passage, the other a liquid orifice in communication with the inner conduit through the liquid injection passageway.
5. 4 double balloon dilatation catheter of claim vertebrae, characterized in that: said two balloon balloon assembly connected in series, the two ends of the balloon are welded to the outer tube is formed of two separate balloon cavity side end portion extending into said core tube to separate the inner wall and the outer welding area between the outer tube and the support tube into the outer injection fluid channel and the inner pouring channel.
6. The double balloon of claim 1, wherein the vertebral dilatation catheter, wherein: a handle assembly comprises two separate two liquid injection liquid injection pipe corresponding interface and a support wire interface.
7. The double balloon 1 or claim 6 wherein the vertebral dilatation catheter, characterized in that: said wire segment includes a rigid support wire and a handle portion located at one end of the rigid wire section.
8. The dual balloon according to claim 1 vertebral dilatation catheter, characterized in that: said outer tube has two outer package developed markers, both markers are located in both the developing balloon.

Double balloon dilatation catheter vertebrae

Technical Field

[0001] The invention relates to the field of medical device technology, particularly a two-vertebral balloon dilatation catheter.

Background

[0002] China's aging population growing, increasing every year caused by osteoporosis and vertebral compression fracture patients, elderly people on life expectancy and quality of life of constant pursuit, income levels continue to increase, making the choice vertebroplasty Minimally invasive surgical treatment of vertebral compression fracture patients will be more and more. Vertebral dilatation balloon catheter is used in combination vertebroplasty equipment package is mainly used when doing percutaneous balloon kyphoplasty surgery, expansion of the vertebral body to form a cavity for injection of bone cement to restore, stabilize the vertebral body.

[0003] The existing vertebral balloon dilatation catheter generally only a balloon, when vertebral fractures plate fracture, a collapsed balloon not afford to support all of the bone plate. The upper and lower vertebral bone is not similar two parallel plates, fracture collapse sizes, the doctor based on the actual situation may only need to hold up a small part of a larger existing balloon volume can not meet the requirements.

DISCLOSURE

[0004] The utility model technical problem to be solved is: to overcome the prior art single balloon dilatation catheter can not meet the needs of technical problems and provide a vertebral body double balloon dilatation catheters, balloon selectively by two The collapse of the bone plate support, you can use only one balloon, smaller for the smaller surgery collapse.

[0005] The technical scheme of the utility model for solving the technical problem is adopted: a two vertebral balloon dilatation catheters, including balloon assembly, cannula assembly and a handle assembly, the cannula assembly includes an outer tube, support pipe and two injection fluid passage, said outer tube is provided on the support tube outside the area between the outer tube and the support tube set two injection fluid channels within the support tube insertion support wire, the outer tube a liquid having two holes respectively correspond to the two liquid injection passage communicating; the balloon assembly comprises two balloons, the balloon disposed at both end of the sleeve assembly, and around the outer tube forming two separate balloon cavity, respectively, through the two liquid apertures balloon outer tube with two pouring channels correspond communication; the handle assembly is provided at the sleeve assembly relative to the balloon assembly the other end.

[0006] An embodiment of the double balloon as claimed in claim 1 vertebral dilatation catheter, wherein: the two pouring channels according to two injection catheter. Perfusion catheter can be round or shaped cross-section.

[0007] Advantageously, the radial section of the perfusion catheter two arc-shaped, one side of the arc-shaped concave perfusion catheter tube towards the support. Arc-shaped design in the limited space of the outer tube, try to make the perfusion catheter tube wall thickness and support to improve the reliability of the product.

Outside [0008] Another embodiment has a support tube and the outer tube is divided into the region between the outer and inner channels pouring liquid injection passage of the core tube between the outer tube and the support tube, said One of the top tube and the outer pouring liquid hole passage, another hole communicating the fluid through the pipe and the inner pouring channel.

[0009] Further, two balloon The balloon assembly series, the two ends of the balloon are welded to form two separate balloon cavity on the outer tube, said core tube extension the ends of the inner wall of the outer tube welded into the end of the partition area between the outer tube and the support tube into the outer injection fluid channel and the inner pouring channel.

[0010] Specifically, the handle assembly comprising two separate two liquid injection liquid injection pipe corresponding interface and a support wire interface.

[0011] Specifically, the support wire comprises a rigid wire section and a handle portion at one end of the rigid wire section. Supporting wire is fixed to the inner support tube, when used, the operator and hold the handle portion, the rigid wire segment slowly out of the support tube, with the handle portion is easy to operate.

[0012] Further, in order to facilitate observation of the balloon reaches the position of the outer wall of the outer tube package has two developing markers, both markers are located in both the developing balloon. The developing tag does not cast X-rays, the X-ray machine can show the position.

[0013] The invention has the advantages that the utility model vertebral double balloon dilatation catheter, the balloon through two selectively support collapsed bone plates, bone plate collapsed for a variety of occasions, in favor of the smooth implementation of the operation.

Brief Description

[0014] The utility model further below in conjunction with the accompanying drawings and the description of embodiments.

[0015] FIG. 1 is a utility model of double balloon dilatation catheter vertebral structure diagram.

[0016] FIG. 2 is a sectional view of a first embodiment in FIG. 1 at AA.

[0017] FIG. 3 is a sectional view at AA in Figure 1 a second embodiment.

[0018] FIG. 4 is the utility model vertebral double balloon catheter dilatation partial view of a second embodiment.

[0019] in which:... A balloon assembly 11 balloon cannula assembly 2, the outer tube 21, 22 support tube, liquid injection pipe 23, 24 outside the injection fluid channel 25 within the injector.... channel, 26 core tube, 3. handle assembly 31 Note liquid interface 32. support wire interface

The support wire 41 rigid wire segment, 42 of the handle portion, 5. development marks.

DETAILED DESCRIPTION

[0020] The present utility model will now make a detailed description of further figures. The figures are simplified schematic, only schematically illustrate the basic structure of the utility model, so it displays only the constitution and the utility model-related.

[0021] FIG. 1 and 2, the utility model of a dual balloon catheter dilatation vertebrae first embodiment includes a cannula assembly 2 and the handle assembly balloon assembly 3, said 2 includes an outer tube sleeve assembly 21, the support tube 22 and two liquid injection pipe 23, the outer tube 21 of the support tube 22 and the package liquid injection pipe 23, the inside of the support tube 22 supports the insertion wire 4 , the outer tube 21 has two separate perfusion catheter 23 and the two - the one corresponding to the liquid communication hole; I said balloon assembly 11 comprises two balloons, the balloon 11 is provided on both the sleeve assembly 2 at one end, and an outer tube 21 surrounding the balloon to form two separate cavities, the two balloons 11 are holes through the outer tube 21 of the liquid injection catheter with two 23 - corresponding to a communication; the The handle assembly disposed on said three components I 2 relative to the other end of the balloon cannula assembly.

[0022] Figure 2, as is preferred, the two liquid injection tube 23 of circular arc radial section, one side of the arc-shaped concave liquid injection pipe 23 toward the support tube 22. Arc-shaped design in the limited space of the outer tube, try to inject liquid tube 23 and the support wall thickness of the pipe 22 to improve product reliability.

[0023] As shown, the utility model of the second embodiment differs from the first embodiment in that 3, the outer tube is provided with an outer tube 21 and the support 21 between the 22 and the support tube the area between the pipe 22 is divided into an outer pouring channel 24 and the inner core 25 of the perfusion channel tube 26, the outer tube 21 was one of the holes and the outer pouring channel 24 in communication, another hole through the fluid conduit and within the liquid injection passage 25 communicates.

[0024] shown in Figure 4, two balloon 11 of the balloon assembly connected in series, the two ends of the balloon 11 are respectively welded to the balloon to form two separate cavities on the outer tube 21, the inserted into the end of the end portion of said core tube 26 and the outer tube wall welded to the outer tube 21 and between the support tube 22 is divided into an area outside the injection fluid channel 24 and channel 25 within the injector. [0025] Specifically, the handle assembly 3 comprises two separate two liquid injection pipe 23 corresponding injection fluid interface 31 and a support wire 4 of the support plug wire interface 32. When using liquid interface 31 by injection through the contrast agent, the balloon 11 to prop up, support wire interface 32 is inserted through the support wire 4, the sleeve assembly has a rigid 2.

[0026] Specifically, the support wire 4 comprises a rigid wire section 41 and the handle portion 41 located at one end of a rigid wire section 42. The support wire 4 is fixed to the support tube 22, the use of the operator to pinch the handle portion 42, the rigid section 41 slowly withdrawn yarn support tube 22, with the handle portion 42 easy to operate.

[0027] Further, in order to facilitate observation of the balloon 11 reaches the position of the outer wall of the outer tube 21 has two development kit numeral 5, numeral 5 both are located in the developing two balloon 11. Developing numeral 5 is not projecting X-rays, the X-ray machine can show the position.

[0028] at the time of surgery, according to the actual conditions of the person, can be supported by the collapse of the bone plate selectively to one or both of the balloon 11 bubbled contrast agents, but also by the two balloon 11, respectively The amount of contrast agent into the drum support different subsidence of the bone plate, more realistic surgical needs.

[0029] The advantage of the first embodiment: the process of small, relative to the second is not so tedious operation set all kinds of tubes, pipes have no welding without checking in place; Disadvantages: If the three pipeline operation is not lining Good mandrel, it is easy to one of these pipes blocked.

[0030] The second Example: When welding fastness, but the process requires high welding place can cause leaks.

[0031] In accordance with the present utility model above the ideal embodiment of inspiration, the contents of the above description, the relevant staff can without departing from the scope of this practical new technology ideas, carry out a variety of changes and modifications. The utility model of technical scope is not limited to the contents of the instructions on the need to be determined according to its technical scope of the claims.