Mechanically plug-in self-locking balloon three-way handle and balloon catheter system using the same

Abstract

The invention discloses a mechanical plug-in self-locking balloon three-way handle and a balloon catheter system using the same, comprising: a three-way balloon handle with one port used as a first connection end; a locking device comprising a locking tube and an elastic block arranged in the locking tube, a through hole along the axial direction is left between the elastic block and the locking tube, a locking nut for connecting the first connection end with the locking tube is sleeved on the front end of the locking tube, a guide rail gradually approaching the axis of the locking tube from back to front, a rack arranged along the guide rail, and a locking assembly cooperating with the guide rail sliding guide is arranged at the rear of the locking tube, and a locking button that can be engaged with the rack is arranged on the locking assembly; when the locking assembly is pushed forward along the guide rail, the locking assembly squeezes the elastic block along the radial direction of the through hole, thereby locking and fixing the guide wire passing through the through hole, and when the locking assembly is located at the rear end of the guide rail, the guide wire can move forward and backward along the axial direction in the through hole. The structure is simple, and it is convenient to lock the balloon catheter and the guide wire during clinical use.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a mechanical plug-in self-locking balloon three-way handle and a balloon catheter system using the same. Background Art

[0002] Endoscopic diagnosis and treatment technology is becoming more and more perfect. Endoscopic treatment has become the main treatment method for gastrointestinal stenosis, such as balloon dilatation, local drug injection, endoscopic resection, stent placement and tissue engineering. Balloon dilatation is less invasive, simple to operate and effective, and is generally the first choice for treatment. The balloon dilatation catheter and guide wire currently used in hospitals do not have a fixed device. In clinical practice, when the balloon reaches the lesion, the patient's body will be uncomfortable and there will be small movements, and the peristalsis of the gastrointestinal tract will cause the balloon to move. As a result, the doctor has to find the lesion again, which increases the time of the operation and the patient's discomfort. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a mechanical plug-in self-locking balloon three-way handle and a balloon catheter system using the same which are convenient for clinical operation, and can conveniently lock the balloon catheter and the guide wire during clinical use.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a mechanical plug-in self-locking balloon three-way handle, comprising:

[0005] A three-way balloon handle, wherein one of the ports of the three-way balloon handle is used as a first connection end;

[0006] The locking device comprises a locking tube and an elastic block arranged in the locking tube, an axial through hole is left between the elastic block and the locking tube, a locking nut for connecting the first connecting end to the locking tube is sleeved on the front end of the locking tube, a guide rail gradually approaching the axis of the locking tube from back to front, a rack arranged along the guide rail and a locking assembly cooperating with the sliding guide of the guide rail is provided at the rear part of the locking tube, a locking button which can be inserted into the rack and meshed with the rack is provided on the locking assembly; when the locking assembly is pushed forward along the guide rail, the locking assembly squeezes the elastic block along the radial direction of the through hole, thereby locking and fixing the guide wire passing through the through hole, and when the locking assembly is located at the rear end of the guide rail, the guide wire can move axially back and forth in the through hole.

[0007] Furthermore, the rear part of the locking nut is connected to the locking tube, an annular gap is left between the front part of the locking nut and the locking tube, and the inner wall of the front part of the locking nut is provided with an internal thread, and the outer wall of the first connecting end is provided with an external thread matching the internal thread, and the first connecting end can be inserted into the annular gap and connected with the locking nut thread.

[0008] Furthermore, the portion of the locking tube located at the annular gap is a Luer taper, which is convenient for insertion into the first connecting end, thereby facilitating connection with the balloon catheter handle.

[0009] Furthermore, the locking tube located behind the annular gap is provided with an axial sliding guide, and the front and rear ends of the sliding guide are respectively provided with limit parts; the inner side of the rear end of the locking nut is provided with an annular flange, and the annular flange is sleeved on the sliding guide. When the locking nut is rotated clockwise or counterclockwise, the first connection end and the locking tube alternate between locking connection and disconnection, and the locking nut moves forward and backward between the two limit parts of the locking tube along the sliding guide. Through this optimization, the locking tube can be connected to the three-way balloon handle only by rotating the locking nut without rotating the locking device.

[0010] Furthermore, there are two racks and they are arranged at intervals in front and back, and the two racks are provided with teeth on one side facing each other. Locking buttons are respectively inserted on the front and rear end faces of the locking assembly, and the locking button can move forward and backward relative to the locking assembly. The locking button is provided with meshing teeth that mesh with the rack on the same side of the locking button. It also includes a spring, and the two ends of the spring are respectively elastically abutted against the locking buttons on the front and rear end faces of the locking assembly and maintain the meshing state of the meshing teeth and the rack. At the same time, when the locking button is pressed relatively, the spring is further compressed and the meshing teeth are disengaged from the meshing state with the rack.

[0011] Furthermore, the elastic block is arranged on the inner wall of the locking tube on one side of the guide rail, and the four sides of the elastic block are bonded to the inner wall.

[0012] Furthermore, another port of the three-way balloon handle is used as a second connecting end for connecting to the balloon catheter. When in use, the guide wire is axially inserted into the balloon catheter, and the rear end of the guide wire extends from the rear end of the balloon catheter and passes through the locking tube from the first connecting end via the second connecting end, and continues to extend backward out of the rear end of the locking tube after passing through the through hole.

[0013] The present invention also provides a balloon catheter system, comprising a balloon catheter and a balloon handle capable of operating the position of the balloon catheter, wherein the balloon handle is the mechanical plug-in self-locking balloon three-way handle as described in any one of the above items.

[0014] The working principle of the present invention is as follows: the mechanical plug-in self-locking balloon three-way handle of the present invention fixes the balloon on the three-way balloon handle through the balloon catheter as needed under the endoscopic state, and then follows the pre-placed guide wire to the lesion position, and then inserts the locking nut end of the locking device into the guide wire first, connects with the first connection end of the balloon handle and tightens it. When the guide wire needs to be fixed, push the locking assembly on the locking device forward, and then fix the balloon catheter and the guide wire together.

[0015] Compared with the prior art, the technical effect achieved by the present invention is: the mechanical plug-in self-locking balloon three-way handle of the present invention has a simple structure, can lock the guide wire, facilitates the connection of the guide wire with the balloon handle, and facilitates the locking of the balloon catheter and the guide wire during clinical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of a mechanically plug-in self-locking balloon three-way handle in an embodiment of the present invention.

[0017] Figure 2 for Figure 1 Schematic cross-sectional view along the AA direction.

[0018] Figure 3 It is a structural schematic diagram of the locking device of the mechanical plug-in self-locking balloon three-way handle in an embodiment of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the locking button and rack of the locking device of the mechanical plug-in self-locking balloon three-way handle in an embodiment of the present invention (viewed from top).

[0020] The reference numerals in the figure are: 1. three-way balloon handle, 1-1. first connecting end, 1-2. second connecting end, 2. guide wire, 3. locking tube, 3-1. Luer taper, 3-2. sliding guide part, 4. elastic block, 5. through hole, 6. locking nut, 6-1. annular flange, 7. guide rail, 8. rack, 9. locking assembly, 10. locking button, 11. annular gap, 12. balloon catheter, 13. meshing teeth, 14. spring, 15. balloon. DETAILED DESCRIPTION

[0021] The present invention is not limited to the following specific embodiments. A person skilled in the art can implement the present invention in various other specific embodiments according to the contents disclosed in the present invention, or any simple changes or modifications made to the design structure and ideas of the present invention fall within the protection scope of the present invention. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] The specific implementation example of the present invention is Figure 1-4 As shown, see Figure 1 ,

[0025] This embodiment provides a mechanical plug-in self-locking balloon three-way handle, comprising:

[0026] A three-way balloon handle 1, wherein one of the ports of the three-way balloon handle 1 is used as a first connection end 1-1;

[0027] A locking device, which includes a locking tube 3 and an elastic block 4 arranged in the locking tube 3, an axial through hole 5 is left between the elastic block 4 and the locking tube 3, the front end of the locking tube 3 is sleeved with a locking nut 6 for connecting the first connecting end 1-1 with the locking tube 3, the rear part of the locking tube 3 is provided with a guide rail 7 which gradually approaches the axis of the locking tube 3 from back to front, a rack 8 arranged along the guide rail 7 and a locking assembly 9 which cooperates with the guide rail 7 for sliding guidance, the locking assembly 9 is provided with a locking button 10 which can be inserted into the rack 8 and meshed with the rack 8; when the locking assembly 9 is pushed forward along the guide rail 7, the locking assembly 9 squeezes the elastic block 4 along the radial direction of the through hole 5, thereby locking and fixing the guide wire 2 passing through the through hole 5, and when the locking assembly 9 is located at the rear end of the guide rail 7, the guide wire 2 can move axially back and forth in the through hole 5.

[0028] Specifically, the rear part of the locking nut 6 is connected to the locking tube 3, an annular gap 11 is left between the front part of the locking nut 6 and the locking tube 3, and the inner wall of the front part of the locking nut 6 is provided with an internal thread, and the outer wall of the first connecting end 1-1 is provided with an external thread matching the internal thread, and the first connecting end 1-1 can be inserted into the annular gap 11 and threadedly connected with the locking nut 6.

[0029] The portion of the locking tube 3 located at the annular gap 11 is a Luer taper 3 - 1 , which facilitates insertion into the first connecting end 1 - 1 , and further facilitates connection with the handle of the balloon catheter 12 .

[0030] The locking tube 3 located behind the annular gap 11 is provided with an axial sliding guide portion 3-2, and the front and rear ends of the sliding guide portion 3-2 are respectively provided with limiting portions; the inner side of the rear end of the locking nut 6 is provided with an annular flange 6-1, and the annular flange 6-1 is sleeved on the sliding guide portion 3-2. When the locking nut 6 is rotated clockwise or counterclockwise, the first connection end 1-1 and the locking tube 3 alternate between locking connection and disconnection, and the locking nut 6 moves forward and backward along the sliding guide portion 3-2 between the two limiting portions of the locking tube 3. The locking tube 3 can be connected to the three-way balloon handle 1 by rotating the locking nut 6 without rotating the locking device.

[0031] There are two racks 8 and they are arranged at intervals in front and back. The two racks 8 have teeth on opposite sides. Locking buttons 10 are respectively inserted on the front and rear end surfaces of the locking assembly 9. The locking button 10 can move forward and backward relative to the locking assembly 9. The locking button 10 is provided with meshing teeth 13 that mesh with the rack 8 on the same side of the locking button 10. It also includes a spring 14. The two ends of the spring 14 are respectively elastically abutted against the locking buttons 10 on the front and rear end surfaces of the locking assembly 9 and maintain the meshing state of the meshing teeth 13 and the rack 8 (that is, the locking assembly 9 is locked and fixed on the guide rail 7). At the same time, when the locking button 10 is pressed relatively, the spring 14 is further compressed and the meshing teeth 13 are disengaged from the meshing state with the rack 8, so that the locking assembly 9 can slide along the guide rail 7.

[0032] The specific installation method of the locking button 10 and the spring 14 on the locking assembly 9 is as follows: a mounting hole is opened at the top of the locking assembly 9, the locking button 10 is relatively arranged in the mounting hole, and guide grooves perpendicular to the axial direction of the locking tube are opened on the side walls on the left and right sides of the mounting hole, respectively. Guide protrusions are provided on the left and right sides of the locking button 10, and the two ends of the spring 14 are respectively mounted on these two guide protrusions. On the one hand, it is convenient for the relative fixation of the locking button 10 and the locking assembly 9, and on the other hand, it makes the relative movement of the two locking buttons 10 in the front and rear directions smoother.

[0033] The elastic block 4 is arranged on the inner wall of the locking tube 3 on the side where the guide rail 7 is arranged, and the four sides of the elastic block 4 are bonded to the inner wall.

[0034] Another port of the three-way balloon handle 1 is used as a second connecting end 1-2, which is used to connect to the balloon catheter 12. When in use, the guide wire 2 is axially inserted into the balloon catheter 12, and the rear end of the guide wire 2 extends from the rear end of the balloon catheter 12 and penetrates into the locking tube 3 from the first connecting end 1-1 via the second connecting end 1-2, and continues to extend backward out of the rear end of the locking tube 3 after passing through the through hole 5.

[0035] The mechanical plug-in self-locking balloon three-way handle 1 of this embodiment, in the endoscopic state, the balloon is fixed on the three-way balloon handle 1 through the balloon catheter 12 as needed, and then the pre-placed guide wire 2 is followed to the lesion position, and then the locking nut 6 end of the locking device is first inserted into the guide wire 2, connected with the first connecting end 1-1 of the balloon handle and tightened and fixed, and when it is necessary to fix, the locking assembly 9 is pushed forward to fix the balloon catheter 12 and the guide wire 2 together. When the guide wire 2 or the balloon catheter needs to be withdrawn or adjusted, the locking button 10 is first pressed relatively, and the spring 14 is further compressed and the meshing tooth 13 is disengaged from the meshing state with the rack 8, and then the locking assembly 9 on the locking device is pushed backward, and after the balloon catheter 12 and the guide wire 2 are withdrawn or adjusted to the required position, the locking button 10 is stopped, and then the meshing tooth 13 is meshed with the rack 8, and the locking assembly 9 is locked and fixed on the guide rail 7, and the balloon catheter 12 and the guide wire 2 are also relatively fixed.

[0036] According to another embodiment not shown, a balloon catheter system is also provided, including a balloon catheter and a balloon handle capable of operating the position of the balloon catheter, and the balloon handle of this embodiment is any one of the mechanical plug-in self-locking balloon three-way handles described above.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mechanical plug-in self-locking balloon three-way handle, characterized in that: include: A three-way balloon handle (1), one of the ports of the three-way balloon handle (1) being used as a first connection end (1-1); A locking device, the locking device comprising a locking tube (3) and an elastic block (4) arranged in the locking tube (3), an axial through hole (5) being left between the elastic block (4) and the locking tube (3), a locking nut (6) for connecting the first connecting end (1-1) to the locking tube (3) being sleeved on the front end of the locking tube (3), a guide rail (7) gradually approaching the axis of the locking tube (3) from the back to the front, a rack (8) arranged along the guide rail (7) and a toothed rack (9) arranged in contact with the guide rail (9). 7) a locking assembly (9) that cooperates with the sliding guide, the locking assembly (9) being provided with a locking button (10) that can be inserted into the rack (8) and meshes with the rack (8); when the locking assembly (9) is pushed forward along the guide rail (7), the locking assembly (9) squeezes the elastic block (4) in the radial direction of the through hole (5), thereby locking and fixing the guide wire (2) that passes through the through hole (5); when the locking assembly (9) is located at the rear end of the guide rail (7), the guide wire (2) can move forward and backward in the axial direction in the through hole (5); There are two racks (8) arranged at intervals in front and back, and the two racks (8) have teeth on one side facing each other. The locking buttons (10) are respectively inserted on the front and rear end surfaces of the locking assembly (9), and the locking button (10) can move forward and backward relative to the locking assembly (9). The locking button (10) is provided with meshing teeth (13) that mesh with the rack (8) located on the same side as the locking button (10), and also includes a spring (14). The two ends of the spring (14) are respectively elastically abutted against the locking buttons (10) located on the front and rear end surfaces of the locking assembly (9) and maintain the meshing state of the meshing teeth (13) and the rack (8). When the locking button (10) is pressed relatively, the spring (14) is further compressed and the meshing teeth (13) are separated from the rack (8); The locking button (10) is provided with guide protrusions on the left and right sides respectively, and the two ends of the spring (14) are respectively sleeved on the two guide protrusions.

2. The mechanical plug-in self-locking balloon three-way handle according to claim 1 is characterized in that: The rear portion of the locking nut (6) is connected to the locking tube (3), an annular gap (11) is left between the front portion of the locking nut (6) and the locking tube (3), and the inner wall of the front portion of the locking nut (6) is provided with an internal thread, and the outer wall of the first connecting end (1-1) is provided with an external thread matching the internal thread, and the first connecting end (1-1) can be inserted into the annular gap (11) and threadedly connected to the locking nut (6).

3. The mechanical plug-in self-locking balloon three-way handle according to claim 2 is characterized in that: The portion of the locking tube (3) located at the annular gap (11) is a Luer taper (3-1).

4. The mechanical plug-in self-locking balloon three-way handle according to claim 2 is characterized in that: The locking tube (3) located behind the annular gap (11) is provided with an axial sliding guide portion (3-2), and the front and rear ends of the sliding guide portion (3-2) are respectively provided with limit portions; the inner side of the rear end of the locking nut (6) is provided with an annular flange (6-1), and the annular flange (6-1) is sleeved on the sliding guide portion (3-2). When the locking nut (6) is rotated clockwise or counterclockwise, the first connection end (1-1) and the locking tube (3) alternate between locking connection and disconnection, and the locking nut (6) moves forward and backward along the sliding guide portion (3-2) between the two limit portions of the locking tube (3).

5. The mechanical plug-in self-locking balloon three-way handle according to claim 1 is characterized in that: The elastic block (4) is arranged on the inner wall of the locking tube (3) on the side where the guide rail (7) is provided, and the four sides of the elastic block (4) are bonded to the inner wall.

6. The mechanical plug-in self-locking balloon three-way handle according to claim 1 is characterized in that: The elastic block (4) is made of silicone material.

7. A balloon catheter system, comprising a balloon catheter (12) and a balloon handle capable of manipulating the position of the balloon catheter, characterized in that: The balloon handle is the mechanical plug-in self-locking balloon three-way handle as described in any one of claims 1-6.

8. The balloon catheter system according to claim 7, characterized in that: The other port of the three-way balloon handle (1) is used as a second connecting end (1-2) for connecting to a balloon catheter (12). When in use, the guide wire (2) is axially inserted into the balloon catheter (12), and the rear end of the guide wire (2) extends from the rear end of the balloon catheter (12) and passes through the second connecting end (1-2) from the first connecting end (1-1) into the locking tube (3), and then passes through the through hole (5) and continues to extend backward out of the rear end of the locking tube (3).

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