A guide sheath and dilator guide sheath assembly

Abstract

The utility model provides a kind of guide sheath and dilator guide sheath assembly, belong to guide sheath technical field, comprising: sheath seat, it is provided with first passage;Suction tube joint, it is provided with first rotating part and second passage, the suction tube joint is rotatably connected with the sheath seat by the first rotating part, when the suction tube joint is rotated relative to the sheath seat, the second passage is always communicated with the first passage.The utility model has the beneficial effect that: suction tube joint is rotatably connected in sheath seat by first rotating part, so that in clinical use process, doctor can rotate suction tube joint according to operation angle freely, adjust external pipe line direction, avoid pipe line winding or pull, simultaneously, second passage is always communicated with first passage, ensure that suction passage is continuously smooth in rotation process, uninterrupted negative pressure, guarantee the stability and reliability of suction function.

Description

Technical Field

[0001] This utility model belongs to the field of guide sheath technology, and relates to a guide sheath and an expander guide sheath assembly. Background Technology

[0002] A guide sheath is a medical device widely used in minimally invasive interventional surgery, commonly found in urology, vascular intervention, and endoscopic treatment. Its main function is to establish a stable instrument passage in tissue channels (such as the urethra, blood vessels, cavities, etc.), facilitating the repeated insertion and manipulation of guidewires, catheters, endoscopes, or other therapeutic instruments, thereby reducing frictional damage to surrounding tissues caused by repeated entry and exit of instruments.

[0003] In actual clinical practice, the guiding sheath usually needs to be connected to an external negative pressure suction device to remove blood, irrigation fluid, or debris generated during surgery, maintain a clear surgical field, and improve surgical safety and efficiency. For this purpose, existing guiding sheaths mostly have a fixed suction tube connector on the sheath seat for connecting the suction tubing. However, the fixed angle of the suction tube connector in existing technology makes it very easy for the tubing to become tangled or pulled when the surgical angle is adjusted by the medical staff after connection, leading to twisting and knotting of the suction tubing. This not only affects the suction effect but may also cause patient discomfort or instrument displacement, indicating significant room for improvement. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a guide sheath and an expander guide sheath assembly.

[0005] The objective of this utility model can be achieved through the following technical solution: a guide sheath, comprising:

[0006] Sheath base, which is provided with a first channel;

[0007] The suction tube connector is provided with a first rotating part and a second channel. The suction tube connector is rotatably connected to the sheath seat through the first rotating part. When the suction tube connector rotates relative to the sheath seat, the second channel is always in communication with the first channel.

[0008] In one of the above-mentioned guide sheaths, the sheath seat is further provided with a first mounting groove, and the first rotating part is located in the first mounting groove. When the suction tube connector rotates relative to the sheath seat, the second channel is always in communication with the first mounting groove.

[0009] In one of the aforementioned guide sheaths, a connecting hole is provided at the bottom of the first mounting groove, and the first channel communicates with the first mounting groove through the connecting hole.

[0010] In one of the aforementioned guide sheaths, the number of the connecting holes is at least two, and each of the connecting holes is centrally distributed around the sheath seat.

[0011] In one of the aforementioned guide sheaths, a winding groove is further provided at the bottom of the first mounting groove, and the connecting hole is located within the winding groove. The first channel communicates with the first mounting groove through the connecting hole and the winding groove.

[0012] In one of the aforementioned guide sheaths, the suction tube connector includes two half-connectors, which are connected and joined together to form the suction tube connector.

[0013] In one of the aforementioned guide sheaths, at least one of the half-joints is provided with a welding strip.

[0014] In one of the aforementioned guide sheaths, a sealing cap is also included. The sealing cap is provided with an anti-detachment component. The sealing cap can cover the sheath seat. One end of the anti-detachment component is connected to the sheath seat, and the other end of the anti-detachment component is connected to the sealing cap.

[0015] In one of the above-mentioned guide sheaths, the sealing cover is further provided with a second rotating part, and the sheath seat is further provided with a second mounting groove. One end of the anti-detachment component near the sheath seat is rotatably connected to the sheath seat through the second rotating part, and the second rotating part is located in the second mounting groove.

[0016] In one of the aforementioned guide sheaths, the sheath seat includes two half-seats, which are connected and assembled to form the sheath seat.

[0017] In one of the aforementioned guide sheaths, the two half-seats are respectively provided with a first connecting portion and a second connecting portion, and the first connecting portion is detachably connected to the second connecting portion.

[0018] In one of the aforementioned guide sheaths, the first connecting part is configured as a hook, and the second connecting part is configured as a slot, wherein the hook can engage with the slot.

[0019] Secondly, an expander guide sheath assembly includes the aforementioned guide sheath and further includes an expander that cooperates with the guide sheath.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] 1. The suction tube connector is rotatably connected to the sheath seat via the first rotating part, allowing doctors to freely rotate the suction tube connector according to the operating angle during clinical use, adjust the direction of the external tubing, and avoid tubing entanglement or pulling. At the same time, the second channel is always connected to the first channel, ensuring that the suction passage remains unobstructed and the negative pressure is not interrupted during rotation, thus ensuring the stability and reliability of the suction function.

[0022] 2. Multiple connecting holes are centrally symmetrically distributed, which makes it easy for the suction tube to be inserted through different connecting holes, making the use of the suction tube connector more flexible.

[0023] 3. The tube groove is used to accommodate and guide the transition part of the suction tube from the connecting hole to the second channel, preventing it from twisting or being squeezed during rotation. This achieves orderly layout and protection of the suction tube, ensuring long-term stable operation of the suction tube and improving reliability and service life.

[0024] 4. It adopts a split-type semi-joint assembly structure, which completes the overall assembly by splicing, significantly reducing the assembly difficulty of complex structures.

[0025] 5. The welding rod can achieve a high-strength, airtight connection after the two halves of the joint are spliced ​​together by ultrasonic welding, hot melt welding and other methods. This ensures that the overall structure of the suction tube joint is firm and leak-free, replacing traditional adhesive or snap-fit ​​connections and avoiding the risk of glue contamination and snap-fit ​​loosening. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the guide sheath of Embodiment 1 of this utility model.

[0027] Figure 2 This is an exploded view of the guide sheath of Embodiment 1 of this utility model.

[0028] Figure 3 This is a top view of the guide sheath of Embodiment 1 of this utility model.

[0029] Figure 4 for Figure 3 A cross-sectional view from the perspective of AA.

[0030] Figure 5 for Figure 3 A cross-sectional view from the perspective of a BB (Black and White) camera.

[0031] Figure 6 This is a schematic diagram of the guide sheath of Embodiment 2 of this utility model.

[0032] Figure 7 This is an exploded view of the guide sheath of Embodiment 2 of this utility model.

[0033] In the figure, 100 is the sheath seat; 110 is the first channel; 120 is the first mounting groove; 121 is the connecting hole; 122 is the winding groove; 130 is the second mounting groove; 140 is the half seat; 141 is the hook; 142 is the slot; 200 is the suction tube connector; 210 is the first rotating part; 220 is the second channel; 230 is the half connector; 231 is the welding rod; 300 is the sealing cap; 310 is the anti-detachment component; and 320 is the second rotating part. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0040] Example 1

[0041] like Figures 1-5 As shown, a guide sheath includes: a sheath seat 100 and a suction tube connector 200.

[0042] The sheath seat 100 is provided with a first channel 110.

[0043] The suction tube connector 200 is provided with a first rotating part 210 and a second channel 220. The suction tube connector 200 is rotatably connected to the sheath seat 100 through the first rotating part 210. When the suction tube connector 200 rotates relative to the sheath seat 100, the second channel 220 is always connected to the first channel 110.

[0044] In this embodiment, the suction tube connector 200 is rotatably connected to the sheath seat 100 via the first rotating part 210, so that during clinical use, the doctor can freely rotate the suction tube connector 200 according to the operating angle to adjust the direction of the external tubing and avoid tubing entanglement or pulling. At the same time, the second channel 220 is always connected to the first channel 110 to ensure that the suction passage remains unobstructed and the negative pressure is not interrupted during rotation, thus ensuring the stability and reliability of the suction function.

[0045] Optionally, the suction tube connector 200 has a rotation angle range of 0° to 360°, enabling omnidirectional adjustment.

[0046] Furthermore, the suction pipe connector 200 rotates without jamming or leakage.

[0047] like Figures 1-5 As shown, based on the above embodiment, the sheath seat 100 is further provided with a first mounting groove 120, and the first rotating part 210 is located in the first mounting groove 120. When the suction tube connector 200 rotates relative to the sheath seat 100, the second channel 220 is always connected to the first mounting groove 120.

[0048] In this embodiment, by providing a first mounting groove 120 on the sheath seat 100, a limiting and supporting space is provided for the rotating part of the suction tube connector 200, so as to achieve precise structural positioning and stable assembly. The first mounting groove 120 forms a protective enclosure for the rotating part, reducing the impact of external impact, improving the connection strength and service life, and ensuring the coaxiality and sealing of the channel docking during rotation.

[0049] like Figures 1-5 As shown, based on the above embodiment, the bottom of the first mounting groove 120 is provided with a connecting hole 121, and the first channel 110 is connected to the first mounting groove 120 through the connecting hole 121.

[0050] In this embodiment, the first channel 110 is connected to the first mounting groove 120 through the connecting hole 121, which facilitates the suction tube to pass through the connecting hole 121 and smoothly enter the first channel 110 from the second channel 220.

[0051] like Figures 1-5 As shown, based on the above embodiment, the number of the connecting holes 121 is at least two, and each of the connecting holes 121 is centrally distributed around the sheath seat 100.

[0052] In this embodiment, the multiple connecting holes 121 are centrally symmetrically distributed, which facilitates the suction tube to be inserted through different connecting holes 121, making the use of the suction tube connector 200 more flexible.

[0053] Optionally, the doctor can select the most suitable connecting hole 121 to connect the suction tube according to the surgical position to avoid the tube compressing the patient's body or interfering with the surgical operation.

[0054] like Figures 1-5 As shown, based on the above embodiment, the bottom of the first mounting groove 120 is also provided with a winding groove 122, the connecting hole 121 is located in the winding groove 122, and the first channel 110 is connected to the first mounting groove 120 through the connecting hole 121 and the winding groove 122.

[0055] Optionally, the tube groove 122 is a curved section for accommodating the suction tube.

[0056] Furthermore, the walls of the pipe winding groove 122 are smooth and have no sharp edges to prevent pipe wear.

[0057] In this embodiment, the tube groove 122 is used to accommodate and guide the transition part of the suction tube from the connecting hole 121 to the second channel 220, preventing it from twisting or being squeezed during rotation. This achieves orderly arrangement and protection of the suction tube, ensuring long-term stable operation of the suction tube and improving reliability and service life.

[0058] like Figures 1-5 As shown, based on the above embodiment, the suction tube connector 200 includes two half connectors 230, and the two half connectors 230 are connected and assembled to form the suction tube connector 200.

[0059] Specifically, the connection method of the two half-connectors 230 is not specifically limited.

[0060] In this embodiment, a split half-joint 230 assembly structure is adopted, and the overall assembly is completed by assembling, which significantly reduces the assembly difficulty of complex structures.

[0061] like Figures 1-5 As shown, based on the above embodiment, at least one of the half-joints 230 is provided with a welding strip 231.

[0062] Optionally, the welding strip 231 is a strip-shaped protrusion that extends along the joint surface. During welding, it melts and fills the joint gap to form an airtight connection.

[0063] In some embodiments, the number of welding strips 231 is one or more, distributed in the critical sealing area.

[0064] In this embodiment, the welding strip 231 can achieve a high-strength, airtight connection by ultrasonic welding, hot melt welding or other methods after the two halves of the joint 230 are spliced ​​together, ensuring that the overall structure of the suction tube joint 200 is firm and leak-free, replacing the traditional adhesive connection or snap-fit ​​connection, and avoiding the risk of glue contamination and snap-fit ​​loosening.

[0065] like Figures 1-5 As shown, based on the above embodiment, a sealing cover 300 is also included. The sealing cover 300 is provided with an anti-detachment component 310. The sealing cover 300 can cover the sheath seat 100. One end of the anti-detachment component 310 is connected to the sheath seat 100, and the other end of the anti-detachment component 310 is connected to the sealing cover 300.

[0066] Optionally, the sealing cap 300 is made of an elastic material and has a sealing gasket on its inner wall, forming an interference fit with the end face of the sheath seat 100 to enhance the dustproof and waterproof effect.

[0067] Furthermore, the anti-slip component 310 is a flexible connecting belt, an elastic rope, or an integrally molded plastic belt.

[0068] In this embodiment, the sealing cap 300 can cover the sheath seat 100 to prevent dust, liquid or other foreign objects from entering the internal channel and maintain the sterility of the instrument. The anti-detachment component 310 connects the sealing cap 300 and the sheath seat 100 to prevent the sealing cap 300 from being accidentally lost during use or transportation and to facilitate management.

[0069] like Figures 1-5 As shown, based on the above embodiment, the sealing cover 300 is further provided with a second rotating part 320, and the sheath seat 100 is further provided with a second mounting groove 130. One end of the anti-detachment member 310 near the sheath seat 100 is rotatably connected to the sheath seat 100 through the second rotating part 320, and the second rotating part 320 is located in the second mounting groove 130.

[0070] In this embodiment, the sealing cover 300 is rotatably connected to the sheath seat 100 via the second rotating part 320, so that it can be opened and closed like a "flip cover". It is easy to operate and can be opened and closed with one hand. The rotating connection structure is stable and reliable, which extends the service life of the sealing cover 300.

[0071] Optionally, the sealing cap 300 is equipped with a snap-on or magnetic structure when closed to prevent accidental opening.

[0072] Example 2

[0073] like Figures 6-7As shown, the difference between Embodiment 2 and Embodiment 1 is that the suction tube connector 200 can be an integral piece, and the sheath seat 100 includes two half-seats 140, which are connected and assembled to form the sheath seat 100.

[0074] In this embodiment, a two-half-body 140 connection structure is adopted. The overall assembly can be completed by first installing the suction pipe connector 200 and then connecting the two half-body 140, which significantly reduces the assembly difficulty of complex structures.

[0075] like Figures 6-7 As shown, based on the above embodiment, the two half-seats 140 are respectively provided with a first connecting part and a second connecting part, and the first connecting part is detachably connected to the second connecting part.

[0076] It is worth noting that the structure of the first and second connecting parts is not specifically limited. For example, it can be a fastener assembly structure or a plug-in assembly structure, as long as it can achieve a detachable connection.

[0077] Specifically, the first connecting part is configured as a hook 141, and the second connecting part is configured as a slot 142, wherein the hook 141 can engage with the slot 142.

[0078] Example 3

[0079] like Figures 1-7 As shown, an expander guide sheath assembly includes a guide sheath as described in Embodiment 1 or Embodiment 2, and further includes an expander that cooperates with the guide sheath.

[0080] In this embodiment, the dilator and the guide sheath form a standardized assembly, which can realize the integrated operation of progressive dilation and channel establishment. After the guide sheath is successfully entered into the target position under the guidance of the dilator, the dilator can be withdrawn, and the guide sheath is retained as a passage for subsequent instruments or suction tubes.

Claims

1. A guide sheath, characterized in that, include: Sheath base, which is provided with a first channel; The suction tube connector is provided with a first rotating part and a second channel. The suction tube connector is rotatably connected to the sheath seat through the first rotating part. When the suction tube connector rotates relative to the sheath seat, the second channel is always in communication with the first channel.

2. A guide sheath as described in claim 1, characterized in that: The sheath seat is also provided with a first mounting groove, and the first rotating part is located in the first mounting groove. When the suction tube connector rotates relative to the sheath seat, the second channel is always connected to the first mounting groove.

3. A guide sheath as described in claim 2, characterized in that: The bottom of the first mounting slot is provided with a connecting hole, and the first channel is connected to the first mounting slot through the connecting hole.

4. A guide sheath as described in claim 3, characterized in that: The number of the connecting holes is at least two, and each of the connecting holes is centrally distributed around the sheath seat.

5. A guide sheath as described in claim 3, characterized in that: The bottom of the first mounting groove is also provided with a tube winding groove, and the connecting hole is located in the tube winding groove. The first channel is connected to the first mounting groove through the connecting hole and the tube winding groove.

6. A guide sheath as described in claim 1, characterized in that: The suction tube connector includes two half-connectors, which are connected and assembled to form the suction tube connector.

7. A guide sheath as claimed in claim 1, characterized in that: The sheath base includes two half-bases, which are connected and assembled to form the sheath base.

8. A guide sheath as described in claim 7, characterized in that: The two half-seats are respectively provided with a first connecting part and a second connecting part, and the first connecting part is detachably connected to the second connecting part.

9. A guide sheath as described in claim 8, characterized in that: The first connecting part is configured as a hook, and the second connecting part is configured as a slot, wherein the hook can engage with the slot.

10. An expander guide sheath assembly, characterized in that, The device includes a guide sheath as described in any one of claims 1-9, and further includes an expander that cooperates with the guide sheath.

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