TPE digestive tract traction balloon

Abstract

The utility model relates to the technical field of medical instruments, in particular to a TPE digestive tract traction balloon. Comprising a spindle-shaped balloon body, a first connector and a second connector are arranged at the two ends of the balloon body respectively, the first connector and the second connector are each of a tubular structure communicated with an inner cavity of the balloon body, and the edge of the first connector and the edge of the second connector are provided with curled edges of an integrated structure with the balloon body; a framework is installed in the balloon body and comprises a first inner sleeve arranged in the first connector in a sleeved mode, a second inner sleeve arranged in the second connector in a sleeved mode and a tie bar connected between the first inner sleeve and the second inner sleeve. The digestive tract traction balloon is simple in structure, convenient to use, firm in connection with a catheter or an ultrasonic probe, large in radial expansion amplitude, small in axial deformation and not prone to falling off and water leakage.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and specifically relates to a TPE digestive tract retracting balloon. Background Technique

[0002] Ultrasound endoscopic examination is a digestive tract examination technology that combines endoscopy and ultrasound. A miniature high-frequency ultrasound probe is placed at the top of the endoscope. When the endoscope is inserted into the body cavity, while the endoscope directly observes the digestive tract mucosal lesions, the ultrasound under the endoscope can be used for real-time scanning, and the histological characteristics of the hierarchical structure of the gastrointestinal tract and the ultrasound images of the surrounding adjacent organs can be obtained, thereby further improving the diagnostic level of endoscopy and ultrasound. However, the digestive tract such as the intestine is a tubular structure of soft tissue. In the natural state, it exists in a collapsed state. During the examination, the rectum needs to be stretched and expanded to more clearly show the lesion site. The ultrasonic water bag is a device for ultrasonic imaging. After the water bag is introduced into the human body and injected with physiological saline, it can expand the digestive tract and conduct ultrasound waves, helping to produce clearer images. When the ultrasonic water bag is used in conjunction with the ultrasonic probe, the interface at one end of the water bag is stuck on the outer wall of the ultrasonic probe or the insertion catheter. The water bag interface adopts an integrated structure with the water bag body and is made of the same material. Ultrasonic water balloons are usually large in size and filled with a large amount of water when used. Although the interface has a certain degree of elasticity, the material used to make the ultrasonic water balloon itself is relatively elastic, and the interface is not tightly connected, so it is easy to leak or even fall off the ultrasonic probe; the digestive tract retraction balloon requires a large radial expansion ratio. In order to meet the requirements of the radial expansion ratio, the diameter of the waist of the digestive tract retraction balloon is usually much larger than the two ends in a spindle shape in the natural state. However, after the spindle-shaped digestive tract retraction balloon is filled with water, the waist will expand radially and will also produce axial elongation, which will form a large pulling force on the interface between the balloon and the ultrasonic probe, which can easily cause leakage or the balloon to fall off the ultrasonic probe. TPE, or thermoplastic elastomer, is a polymer material that shows high elasticity of rubber at room temperature and can be plasticized and formed at high temperature. It has the physical and technological processing properties of vulcanized rubber and is a new type of polymer material between rubber and resin. Its softness is close to that of natural latex, and it is suitable for use as a large digestive tract retraction balloon. Chinese patent 2006200841830 discloses "Medical Sterile Ultrasonic Water Bag Device", which is a sterile cover with an opening at the rear end, and a tightening mechanism for fixing the cover is arranged at the rear of the cover. When in use, the probe is inserted into the cover, and its rear is tightened by a lock or other parts to achieve aseptic operation during the inspection process. This lock-type tightening component has a complex structure and cumbersome operation. It needs to be packaged and stored separately from the water bag body during packaging and storage, which causes many inconveniences when used. My other Chinese patent 2021202611043 discloses "A Ring-Connecting Device for Installing Ultrasonic Water Bags", which has a ring-connected top of the ultrasonic water bag body, a receiving groove is arranged on the inner side of the bottom of the ring, a groove is arranged on one side of the ring, a limit block is arranged inside the groove, a belt is arranged on one side of the limit block, and a rotating part is arranged on the top of the ring through a bearing; the device installs and fixes the ultrasonic water bag through the ring, and also has the problems of complex structure and cumbersome operation. SUMMARY OF THE INVENTION

[0003] The purpose of the present utility model is to provide a TPE digestive tract retractor balloon with a simple structure, convenient use, not easily falling off and leaking.

[0004] To achieve the above object, the present utility model provides the following technical solutions:

[0005] The TPE digestive tract retractor balloon of the present utility model includes a spindle-shaped balloon body. First interfaces and second interfaces are respectively arranged at both ends of the balloon body. The first interfaces and the second interfaces are both tubular structures communicating with the inner cavity of the balloon body. The edges of the first interfaces and the second interfaces are provided with crimps which are an integral structure with the balloon body. A framework is installed in the balloon body. The framework includes a first inner sleeve sleeved in the first interface, a second inner sleeve sleeved in the second interface, and a tension member connecting the first inner sleeve and the second inner sleeve.

[0006] Through the above technical solution, the first inner sleeve and the second inner sleeve at both ends of the framework can improve the holding force between the interfaces at both ends of the balloon body and the catheter, and the tension member can limit the extension of the balloon body in the axial direction, achieving the purpose of not easily falling off and leaking.

[0007] Preferably, both the first inner sleeve and the second inner sleeve are flexible circular tubular structures, and the tension member is a strip-shaped structure integrated with the first inner sleeve and the second inner sleeve.

[0008] Through the above technical solution, the structure of the framework is simple, facilitating assembly and use.

[0009] Preferably, the crimp is an annular structure with a circular cross-section, and annular grooves adapted to the crimp are arranged on the outer walls of the first inner sleeve and the second inner sleeve.

[0010] Through the above technical solution, the holding force between the interface and the sleeve can be improved, preventing loosening and slipping.

[0011] Preferably, at least one of the ends of the first inner sleeve and the second inner sleeve is turned outwards and sleeved outside the first interface or the second interface.

[0012] Through the above technical solution, the holding force between the interface and the sleeve can be improved, preventing loosening and slipping.

[0013] Preferably, there are two or three tension members, and the two or three tension members are evenly distributed around the axes of the first inner sleeve and the second inner sleeve.

[0014] Through the above technical solution, the tension members are uniformly stressed and do not prevent water injection into the balloon through the catheter.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The digestive tract retractor balloon has a simple structure and is convenient to use. It is firmly connected to a catheter or an ultrasonic probe, has a large radial expansion amplitude and a small axial deformation, and is not easy to fall off or leak water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the present utility model.

[0017] Figure 2 It is a schematic three-dimensional structure diagram of the framework. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] As Figure 1 shown, a TPE digestive tract retractor balloon of the present utility model includes a spindle-shaped balloon body 1, and a first interface 2 and a second interface 3 are respectively arranged at both ends of the balloon body 1. Both the first interface 2 and the second interface 3 are tubular structures communicating with the inner cavity of the balloon body 1. The edges of the first interface 2 and the second interface 3 are provided with flanges 4 integrated with the balloon body 1. The flange 4 is an annular structure with a circular cross-section. Of course, it can also be an annular structure with an elliptical cross-section. The thickness of the flange 4, that is, the diameter of the circular cross-section of the annular structure, is greater than the thickness of the first interface 2 or the second interface 3, so as to form an annular boss at the interface part, and the stability is better when the first interface 2 or the second interface 3 is sleeved on a catheter or an ultrasonic probe. The balloon body 1, the first interface 2, the second interface 3, and the flange 4 are integrally formed by a thermoplastic elastomer of the same material. The so-called thermoplastic elastomer is a polymer material that shows high elasticity of rubber at normal temperature and can be plasticized and formed at high temperature. It has the physical process processing performance of vulcanized rubber and is a new type of polymer material between rubber and resin. The elongation rate is between 300% and 1100%, and the burst pressure is between 130 kPa and 350 kPa, and the softness is close to natural latex.

[0020] As Figure 1 、 Figure 2As shown, a framework is installed in the balloon body 1. The framework includes a first inner sleeve 51 sleeved in the first interface 2, a second inner sleeve 52 sleeved in the second interface 3, and a stay 53 connected between the first inner sleeve 51 and the second inner sleeve 52. The framework is made of a silicone material with a relatively large elastic modulus, and the first inner sleeve 51, the second inner sleeve 5, and the stay 53 are of an integral structure. There are two or three stays 53, and the two or three stays 53 are evenly distributed around the axes of the first inner sleeve 51 and the second inner sleeve 52. The stay 53 has sufficient flexibility, and the gap between the stays 53 does not prevent water injection into the balloon body 1 nor does it prevent the sensor of the endoscopic ultrasound probe from imaging. When the first inner sleeve 51 and the second inner sleeve 5 are subjected to axial tension, the stay 53 can limit the range of their axial extension and prevent one end of them from detaching from the catheter or the ultrasound probe.

[0021] As Figure 2 shown, both the first inner sleeve 51 and the second inner sleeve 52 are flexible circular tubular structures, and the stay 53 is a strip-shaped structure integrated with the first inner sleeve 51 and the second inner sleeve 52. And annular grooves 5 adapted to the crimps 4 are provided on the outer walls of the first inner sleeve 51 and the second inner sleeve 52. During use, as Figure 1 shown on the right side, the part of the outer end of the second inner sleeve 52 with the annular groove 5 is turned outwards, and the outer end of the second inner sleeve 52 is sleeved outside the second interface 3, so that the crimp 4 on the second interface 3 is stuck in the annular groove 5, binding the second inner sleeve 52 and the second interface 3 together. At the same time, the second interface 3 is clamped tightly on the outer wall of the catheter or the ultrasound probe through the relatively large elastic modulus of the second inner sleeve 52 to prevent loosening or water leakage.

[0022] As more embodiments of the present invention, annular grooves 5 are provided on both the first inner sleeve 51 and the second inner sleeve 52, and at least one end of them is turned outwards and sleeved outside the first interface 2 or the second interface 3.

[0023] When in use, the skeleton is assembled with the balloon body 1, and the outer ends of the first inner sleeve 51 and the second inner sleeve 52 slightly extend out of the first interface 2 or the second interface 3. During surgery, the columnar ultrasound probe or endoscopic surgical catheter is inserted into the first interface 2 until its end extends out of the outer end of the second interface 3, and the position of the balloon body 1 is adjusted so that the sensor of the ultrasound probe is located in the middle of the balloon body 1. Then, the outer ends of the first inner sleeve 51 and the second inner sleeve 52 are folded outward to form a curling edge and pressed on the first interface 2 or the second interface 3 respectively. After the catheter or ultrasound probe with a balloon enters the surgical site, water is injected into the balloon body 1 through the water injection channel in the catheter or ultrasound probe. After the water is injected, the balloon body 1 expands and expands the surgical site to facilitate endoscopic observation or ultrasound imaging. The curling edge of the inner sleeve tightens the first interface 2 and the second interface 3 to the outer wall of the catheter, and the tie rod 53 serves to limit the distance between the first interface 2 and the second interface 3, so that the balloon body 1 will not stretch axially when it expands radially, avoiding sliding or water leakage at the interface.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A TPE digestive tract retraction balloon, comprising a spindle-shaped balloon body (1), wherein the two ends of the balloon body (1) are respectively provided with a first interface (2) and a second interface (3), characterized in that: The first interface (2) and the second interface (3) are both tubular structures connected to the inner cavity of the balloon body (1), and the edges of the first interface (2) and the second interface (3) are provided with curling edges (4) of an integrated structure with the balloon body (1); a skeleton is installed in the balloon body (1), and the skeleton comprises a first inner sleeve (51) sleeved in the first interface (2), a second inner sleeve (52) sleeved in the second interface (3), and a tie rod (53) connected between the first inner sleeve (51) and the second inner sleeve (52).

2. According to claim 1, a TPE digestive tract retraction balloon, characterized in that: The first inner sleeve (51) and the second inner sleeve (52) are both flexible circular tubular structures, and the tie rod (53) is a strip structure integrated with the first inner sleeve (51) and the second inner sleeve (52).

3. A TPE digestive tract retraction balloon according to claim 1 or 2, characterized in that: The curling edge (4) is an annular structure with a circular cross section, and an annular groove (5) adapted to fit the curling edge (4) is provided on the outer walls of the first inner sleeve (51) and the second inner sleeve (52).

4. A TPE digestive tract retraction balloon according to claim 1 or 2, characterized in that: The end of at least one of the first inner sleeve (51) and the second inner sleeve (52) is folded outwards and sleeved outside the first interface (2) or the second interface (3).

5. A TPE digestive tract retraction balloon according to claim 1 or 2, characterized in that: There are two or three tie bars (53), and the two or three tie bars (53) are evenly distributed around the axis of the first inner sleeve (51) and the second inner sleeve (52).

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