A dilating bougie

Abstract

The utility model provides a kind of dilating bougie, including bougie body and push part, the push part is fixed or detachably connected in the proximal end of the bougie body, the cavity is formed in the extension direction along it in the bougie body, the bougie body includes proximal end section, intermediate section and distal end section in turn along proximal end to distal end direction, the inner diameter of the distal end section gradually decreases along proximal end to distal end direction, and the end portion arc transition of the distal end section;The inner diameter of the proximal end section gradually increases along proximal end to distal end direction, the inner diameter of the intermediate section is constant, so that dilating bougie enters human body pipeline and carries out the dilatation of narrow site, except the intermediate section of execution dilatation function, the proximal end section and distal end section of dilating bougie do not dilate non-narrow site of human body pipeline, obviously alleviate the foreign body sensation of patient and the structure is not easy to shift in human body pipeline.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an expansion probe. Background Technology

[0002] Probe dilation is a common procedure for dilating human conduits, primarily used for non-dynamic stenosis. During the procedure, a guidewire is passed through the cavity in the center of the dilation probe to guide the probe into the narrowed part of the conduit, where it remains for approximately 3 minutes to dilate.

[0003] However, existing traditional dilation probes are cylindrical structures with a single diameter. Because the dilation probe has a certain length, when it enters the human body's channels to dilate narrow sections, the cylindrical structure of the dilation probe, in addition to performing the dilation function, will also dilate non-narrow sections of the human body's channels to a certain extent, resulting in a strong foreign body sensation for the patient. Furthermore, the single-diameter cylindrical structure is prone to displacement within the human body's channels. Utility Model Content

[0004] This utility model discloses an expansion probe that solves the problem that when existing cylindrical expansion probes with a single diameter are inserted into the human body to expand narrow sections, the remaining part of the expansion probe, besides performing its expansion function, also expands the non-narrow sections of the human body to a certain extent, resulting in a strong foreign body sensation for the patient; and it is also easy for it to shift within the human body. The inner diameter of the distal segment of this expansion probe gradually decreases from the proximal end to the distal end, while the inner diameter of the proximal segment gradually increases from the proximal end to the distal end. This ensures that the remaining part of the expansion probe, besides performing its expansion function, does not expand the non-narrow sections of the human body, significantly reducing the foreign body sensation for the patient, and the structure is not easily shifted within the human body.

[0005] To achieve the above objectives, the technical solution of this utility model is specifically implemented as follows:

[0006] This utility model discloses an expansion probe, including a probe body and a pushing part. The pushing part is fixedly or detachably connected to the proximal end of the probe body. A cavity is formed in the probe body along its extension direction. The probe body includes a proximal section, a middle section and a distal section in sequence from the proximal end to the distal end. The inner diameter of the distal section gradually decreases from the proximal end to the distal end, and the end of the distal section is rounded. The inner diameter of the proximal section gradually increases from the proximal end to the distal end, and the inner diameter of the middle section is constant.

[0007] Furthermore, a mounting cavity is formed at the proximal end of the probe body, and the pushing part is fixedly or detachably connected to the probe body through the mounting cavity.

[0008] Furthermore, the pushing part is bonded to the probe body.

[0009] Furthermore, the pushing part is threadedly connected to the probe body.

[0010] Furthermore, a threaded groove is formed inside the mounting cavity, and a threaded connection portion is formed at the distal end of the pushing part.

[0011] Furthermore, the pushing part is engaged with the probe body.

[0012] Furthermore, the distal end of the pusher portion is provided with a first latching arm and a second latching arm, which are disposed opposite to each other. A first latching protrusion is formed on the first latching arm and extends in a direction away from the second latching arm. A second latching protrusion is formed on the second latching arm and extends in a direction away from the first latching arm. The first latching protrusion and the second latching protrusion abut against the two side walls of the mounting cavity.

[0013] Furthermore, the outer peripheral surface of the probe body is coated with a hydrophilic coating.

[0014] Furthermore, a developing ring is provided at the distal end of the probe body.

[0015] Furthermore, the end of the distal segment is made of stainless steel.

[0016] Beneficial technical effects:

[0017] 1. This utility model discloses an expansion probe, comprising a probe body and a pushing part, wherein the pushing part is fixedly or detachably connected to the proximal end of the probe body, and a cavity is formed within the probe body along its extension direction. The probe body comprises a proximal segment, a middle segment, and a distal segment sequentially from the proximal end to the distal end. The inner diameter of the distal segment gradually decreases from the proximal end to the distal end, and the end of the distal segment is rounded. The inner diameter of the proximal segment gradually increases from the proximal end to the distal end, while the inner diameter of the middle segment remains constant. This allows the expansion probe to expand narrow sections of the human body's passages, except for the middle segment which performs the expansion function. The proximal and distal segments of the expansion probe will not expand non-narrow sections of the human body's passages, significantly reducing the patient's foreign body sensation, and the structure is not easily displaced within the human body's passages.

[0018] 2. This utility model discloses an expansion probe, wherein the outer peripheral surface of the probe body is coated with a hydrophilic coating, making it easy to pass through narrow parts and avoiding scratching the walls of human body pipes;

[0019] 3. This utility model discloses an expansion probe with a rounded end transition of the distal section 14. The rounded end transition helps to reduce the forward resistance in the human body's channels, making it easier to pass through narrow parts.

[0020] 4. This utility model discloses an expansion probe, including a probe body and a pushing part. The pushing part is detachably connected to the proximal end of the probe body. The replaceable probe body improves surgical safety. Compared with replacing the entire probe, the detachable design also reduces manufacturing costs. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0022] Figure 1 This is a cross-sectional view of an expansion probe according to Embodiment 1 of this utility model;

[0023] Figure 2 This is a structural diagram of the probe body of an expansion probe according to Embodiment 1 of this utility model;

[0024] Figure 3 This is a cross-sectional structural diagram of the probe body of an expansion probe according to Embodiment 1 of this utility model;

[0025] Figure 4 This is a cross-sectional view of an expansion probe according to Embodiment 2 of this utility model;

[0026] Figure 5 This is a cross-sectional structural diagram of the probe body of an expansion probe according to Embodiment 2 of this utility model;

[0027] Figure 6 This is a schematic diagram of the pushing part of an expansion probe according to Embodiment 2 of the present invention;

[0028] Figure 7 This is a cross-sectional view of an expansion probe according to Embodiment 3 of this utility model;

[0029] Figure 8 This is a cross-sectional structural diagram of the probe body of an expansion probe according to Embodiment 3 of this utility model;

[0030] Figure 9 This is a schematic diagram of the pushing part of an expansion probe according to Embodiment 3 of this utility model.

[0031] Among them, 1- probe body, 11- cavity, 12- proximal section, 13- intermediate section, 14- distal section, 15- mounting cavity, 151- threaded groove, 2- pushing part, 21- first locking arm, 22- second locking arm, 23- first locking protrusion, 24- second locking protrusion, 25- threaded connection part, 3- developing ring. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0034] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0035] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0036] It should be noted that, in this embodiment, those skilled in the art will understand that when using an expansion probe for surgical procedures, the probe body is in contact with the patient, and the rear end (pushing part) is for the operator to operate. For ease of description, the end of the expansion probe near the front end of the probe body is referred to as the distal end, and the end near the rear end of the expansion probe is referred to as the proximal end.

[0037] To address the problem that existing traditional dilation probes are cylindrical with a single diameter, when inserted into the human body's passageways to dilate narrow sections, in addition to the part performing the dilation function, the remaining part of the dilation probe also dilates the non-narrow sections of the passageways to a certain extent, resulting in a strong foreign body sensation for the patient; and that it is prone to displacement within the human body's passageways, this utility model discloses a novel dilation probe.

[0038] Example 1:

[0039] See Figures 1-3The expansion probe includes a probe body 1 and a pushing part 2. The pushing part 2 is fixedly connected to the proximal end of the probe body 1. Preferably, the proximal end of the probe body 1 forms an installation cavity 15. The pushing part 12 is bonded to the probe body 1 through the installation cavity 15. A cavity 11 is formed inside the probe body 1 along its extension direction for the passage of a guide wire. The probe body 1 includes a proximal section 12, a middle section 13 and a distal section 14 in sequence from the proximal end to the distal end. The inner diameter of the distal section 14 gradually decreases from the proximal end to the distal end, and the end of the distal section 14 is rounded. Specifically, the end of the distal section 14 forms a receiving chamber. A hemispherical end is installed in the receiving chamber. The end is made of stainless steel. Stainless steel is easier to process into a rounded transition, and the end is polished. The rounded end helps to reduce the forward resistance in the human body's conduit, making it easier to pass through narrow parts. The inner diameter of the proximal section 12 gradually increases from the proximal end to the distal end, while the inner diameter of the middle section 13 is constant.

[0040] In other words, the dilation probe disclosed in this utility model includes a proximal segment 12, an intermediate segment 13, and a distal segment 14. The inner diameter of the proximal segment 12 gradually increases from the proximal end to the distal end, and the inner diameter of the distal segment 14 gradually decreases from the proximal end to the distal end. Only the inner diameter of the intermediate segment 13, which performs the dilation function, remains constant. This ensures that when the dilation probe enters the human body's conduit to dilate narrowed areas, the proximal segment 12 and the distal segment 14 of the dilation probe will not dilate non-narrowed areas of the human body's conduit, except for the intermediate segment 13 which performs the dilation function. This significantly reduces the patient's foreign body sensation, and this spindle-shaped structure is not easily displaced within the human body's conduit.

[0041] As a preferred embodiment of this utility model, the outer peripheral surface of the probe body 1 is coated with a hydrophilic coating, which makes it easy to pass through the narrow part of the human body's conduit and avoids scratching the conduit wall.

[0042] In a preferred embodiment of this utility model, a developing ring 3 is provided at the distal end of the probe body 1. Specifically, the developing ring 3 is located at the lower part of the hemispherical end. The developing ring 3 enables the operator to clearly see the position of the probe body 1 inside the human body tube.

[0043] Example 2:

[0044] The difference between Embodiment 2 and Embodiment 1 is that the pushing part 2 is threadedly connected to the proximal end of the probe body 1, see [link to Embodiment 2]. Figures 4-6 A threaded groove 151 is formed in the mounting cavity 15, and a threaded connection part 25 is formed at the distal end of the push part 2. The threaded connection part 25 is screwed into the threaded groove 151 to complete the detachable connection between the push part 2 and the probe body 1. The replaceable probe body improves the safety of the operation. Compared with replacing the whole probe, the detachable design also reduces the manufacturing cost.

[0045] Example 3:

[0046] The difference between Embodiment 3 and Embodiment 1 is that the pushing part 2 is engaged with the proximal end of the probe body 1, see [link to Embodiment 3]. Figures 7-9 Specifically, the distal end of the pusher 2 has a first latching arm 21 and a second latching arm 22, which are arranged opposite to each other. A first latching protrusion 23 is formed on the first latching arm 21, extending in a direction away from the second latching arm 22. A second latching protrusion 24 is formed on the second latching arm 22, extending in a direction away from the first latching arm 21. A boss is formed at the distal end of the mounting cavity 15. During installation, the first latching arm 21 and the second latching arm 22 are pinched together to bring them closer together. The first locking arm 21 and the second locking arm 22 are inserted into the mounting cavity 15. Due to the pressure from the inner wall of the mounting cavity 15, the first locking arm 21 and the second locking arm 22 remain close to each other. The first locking arm 21 and the second locking arm 22 continue to advance in the mounting cavity 15 until the first locking protrusion 23 and the second locking protrusion 24 abut against the boss in the mounting cavity 15, thus completing the detachable connection between the pusher 2 and the probe body 1. The replaceable probe body improves the safety of the operation. Compared with replacing the whole probe, the detachable design also reduces the manufacturing cost.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An expanding probe, characterized in that, The device includes a probe body (1) and a pusher (2). The pusher (2) is fixedly or detachably connected to the proximal end of the probe body (1). A cavity (11) is formed inside the probe body (1) along its extension direction. The probe body (1) includes a proximal section (12), a middle section (13) and a distal section (14) in sequence from the proximal end to the distal end. The inner diameter of the distal section (14) gradually decreases from the proximal end to the distal end, and the end of the distal section (14) is rounded. The inner diameter of the proximal section (12) gradually increases from the proximal end to the distal end, and the inner diameter of the middle section (13) is constant.

2. The expansion probe according to claim 1, characterized in that, The probe body (1) has a mounting cavity (15) formed at its proximal end, and the pusher (12) is fixedly or detachably connected to the probe body (1) through the mounting cavity (15).

3. The expansion probe according to claim 2, characterized in that, The pushing part (2) is bonded to the probe body (1).

4. The expansion probe according to claim 2, characterized in that, The pushing part (2) is threadedly connected to the probe body (1).

5. An expansion probe according to claim 4, characterized in that, A threaded groove (151) is formed in the mounting cavity (15), and a threaded connection part (25) is formed at the distal end of the pushing part (2).

6. An expansion probe according to claim 2, characterized in that, The pushing part (2) is engaged with the probe body (1).

7. An expansion probe according to claim 6, characterized in that, The distal end of the push part (2) is provided with a first latching arm (21) and a second latching arm (22). The first latching arm (21) and the second latching arm (22) are disposed opposite to each other. A first latching protrusion (23) is formed on the first latching arm (21). The first latching protrusion (23) extends in a direction away from the second latching arm (22). A second latching protrusion (24) is formed on the second latching arm (22). The second latching protrusion (24) extends in a direction away from the first latching arm (21). The first latching protrusion (23) and the second latching protrusion (24) abut against the two side walls of the mounting cavity (12).

8. The expansion probe according to claim 1, characterized in that, The outer peripheral surface of the probe body (1) is coated with a hydrophilic coating.

9. An expansion probe according to claim 1, characterized in that, A developing ring (3) is provided at the distal end of the probe body (1).

10. An expansion probe according to claim 1, characterized in that, The end of the distal segment (14) is made of stainless steel.

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