A combined medical sleeve system and method of use thereof

Abstract

The application discloses a combined medical sleeve system and a use method thereof, and technical scheme points of the application are as follows: the sleeve system comprises a sleeve assembly, the sleeve assembly is composed of two sleeve pieces which can be combined into a complete sleeve; a fixing assembly; a dilator which is detachably connected on the two sleeve pieces to perform a dilating operation on the two sleeve pieces when the fixing assembly is separated from the sleeve assembly; and a maintainer; the use method comprises the following steps: S01, installing the dilator; S02, removing the lock; S03, dilating the sleeve piece; S04, installing the maintainer; and S05, removing the dilator; in the process of the operation, the working channel can be expanded according to requirements through the two sleeve pieces and the dilator, and the sleeve does not need to be replaced; through the setting of the maintainer, the two dilated sleeve pieces can be supported, so that the problems of retraction and displacement are avoided.

Description

Technical Field

[0001] This invention relates to the technical field of medical devices, and more specifically, to a combined medical cannula system and its method of use. Background Technology

[0002] In minimally invasive spinal surgery, a trocar is often used to create a surgical channel to protect surrounding tissues and provide space for instrument manipulation. Traditional trocars are mostly one-piece, fixed-diameter structures whose size cannot be dynamically adjusted during surgery. If it is necessary to expand the surgical field or accommodate larger instruments, it is often necessary to replace the entire trocar or perform multiple punctures, increasing the risk of tissue damage.

[0003] Even existing expandable cannulas mostly integrate the expansion mechanism onto the cannula, resulting in complex structures, high costs, and a lack of stable maintenance devices after expansion, making them prone to retraction or displacement. Furthermore, surgical procedures involving expansion openings also suffer from difficulties in movement, poor stability, and a lack of sliding guidance for instruments when retracting soft tissue. These problems lead to a lack of standardized operating procedures, resulting in significant arbitrariness in the surgeon's actions and increasing the risk of safety hazards. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a modular medical cannula system. This system, through the installation of two sets of cannulas and a spreader, can expand the working channel as needed during surgery without the need to replace the cannula. The maintainer provides support for the two sets of cannulas after they are spread, thereby preventing problems such as retraction and displacement.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a combined medical cannula system, including a cannula assembly, wherein the cannula assembly consists of two cannula pieces that can be combined to form a complete cannula;

[0006] A fixing component is detachably connected to the sleeve assembly, and when the fixing component is fixed to the sleeve assembly, it can lock and fix the two sleeve pieces into a complete sleeve.

[0007] A spreader, which is detachably connected to the two sets of segments to spread the two sets of segments when the fixing assembly is detached from the sleeve assembly;

[0008] And a retainer, which is used to connect to the two sets of tube segments after they have been spread out to support the two sets of tube segments.

[0009] The present invention is further configured such that: the fixing component includes a locking member, the locking member being detachably connected to the two sleeve pieces respectively;

[0010] And connectors, two of which are provided and are used to detachably connect the locking member to the two sleeve pieces.

[0011] The present invention is further configured such that the connector is configured as a snap fastener, a latch, or a screw locking block.

[0012] The present invention is further configured such that: a positioning element for positioning is provided between the locking element and the sleeve piece, the positioning element being configured as a positioning protrusion and a positioning groove respectively provided on the outside of the locking element and the sleeve piece.

[0013] The present invention is further configured such that: the expander includes an inner support member, and two inner support members are provided and can be detachably connected to two sets of tubular segments respectively;

[0014] And a drive mechanism for driving the two inner support members to move in directions that are far apart from each other.

[0015] The present invention is further configured such that: the expander also includes a main body, one top end of the two inner support members slides on the main body to support and guide the two inner support members through the main body, and the drive mechanism is disposed on the main body.

[0016] The present invention is further configured such that the driving mechanism is configured to use a rack, screw, or threaded connection to push the two inner support members to slide.

[0017] The present invention is further configured such that: one of the inner support members is configured as an adjustable inner support member;

[0018] The adjustable inner support includes an inner support portion, which is directly connected to the sleeve segment;

[0019] And an adjustment part, which is connected to the main body and slides on the main body under the drive of the drive mechanism;

[0020] The inner support can slide on the adjustment section to adjust the position of the sleeve segment along the length direction of the sleeve segment.

[0021] The present invention is further configured such that: the adjusting inner support is provided with a height adjusting mechanism for adjusting the height of the adjusting part;

[0022] The height adjustment mechanism is used to fix and loosen the adjustment part on the inner support part, and the height adjustment mechanism is configured as a snap-on or screw structure.

[0023] The present invention is further configured such that: the maintainer is provided with multiple components of different widths, or is provided as an independent component with adjustable width.

[0024] The present invention is further configured such that: the retainer is configured as an independent component with adjustable width, and the width adjustment of the retainer is achieved by a screw structure.

[0025] The present invention is further configured such that: the maintainer is provided with a positioning part for positioning the two sets of tube segments respectively, the positioning part is inserted between the two sets of tube segments, and / or, the positioning part is provided with a protrusion or groove that cooperates with the groove or protrusion of the tube segment.

[0026] The invention is further configured to include a slide rail, which is detachably connected to the sleeve sheet and / or the retainer;

[0027] The slide rail is provided with a sliding contact surface for guiding the endoscope to move in place and for holding it in place.

[0028] Another object of the present invention is to provide a method of using a combined medical cannula system, comprising the following steps;

[0029] S01. Install the spreader: Fix the two inner support members of the spreader onto the two sets of segments respectively;

[0030] S02, Remove Locking: Remove the fixing components from the two sets of segments;

[0031] S03, Spreading the tube segments: Operate the drive mechanism of the spreader, and the drive mechanism pushes the two inner support members to drive the two tube segments to spread them apart to achieve the required gap in the surgery;

[0032] S04. Install the retainer: Fix the retainer on the two sets of segments;

[0033] S05. Remove the spreader: Remove the two inner support components of the spreader from the two sets of segments respectively.

[0034] The present invention is further configured to include a step S06 after step S05;

[0035] Step S06, Fixing the slide rail: Fix the slide rail to the two sets of tubes and / or the retainer to guide the endoscope to move and slide.

[0036] The present invention is further configured such that: a step S021 is provided between step S02 and step S03;

[0037] Step S021, Adjusting the height: The height adjustment mechanism locks the adjustment part, thereby pushing the sleeve connected to the adjustment part downward by a specific distance to align the lower ends of the two sleeves. Then, the height adjustment mechanism locks the adjustment part.

[0038] The present invention is further configured to include step S07, which is set after step S06;

[0039] Step S07, casing system removal: Complete the removal of the casing system by reversing the operations from S01 to S06.

[0040] The present invention is further configured such that step S07 includes the following steps:

[0041] S071. Remove the slide rails;

[0042] S072. Install the spreader;

[0043] S073, Remove the retainer;

[0044] S074. Operate the drive mechanism to bring the two sets of tube segments closer together to form a complete tube;

[0045] S075. Install and fix the components;

[0046] S076. Remove the spreader;

[0047] S077. Take out the two sets of tubes that have been assembled together.

[0048] In summary, the present invention has the following advantages compared to the prior art:

[0049] 1. This invention, by setting up two sets of tubular segments and a spreader, can expand the working channel as needed during the operation without the need to change the tubing;

[0050] 2. The present invention provides support for the two sets of segments after they are spread out by setting a retainer, thereby avoiding the problems of shrinkage and displacement.

[0051] 3. The present invention, through the setting of the slide rail, can guide the endoscope to move and slide in a fixed position, thereby improving the stability of the surgical operation;

[0052] 4. This invention establishes a standardized operating procedure for the use of the cannula system, which standardizes the surgeon's operation and improves the safety of the surgery. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the sleeve and fixing assembly in an embodiment;

[0054] Figure 2 A schematic diagram of the expander in the embodiment;

[0055] Figure 3 A schematic diagram of the maintainer in the embodiment;

[0056] Figure 4 This is a schematic diagram of the slide rail used in an embodiment;

[0057] Figure 5This is a schematic diagram illustrating the connection of the fixing component and the spreader to the sleeve assembly in an embodiment;

[0058] Figure 6 This is a schematic diagram of the expander opening the sleeve assembly in the embodiment;

[0059] Figure 7 This is a schematic diagram showing the retainer and spreader fixed to the sleeve assembly in an embodiment.

[0060] Figure 8 A schematic diagram of the retainer fixed to the expanded sleeve assembly in an embodiment;

[0061] Figure 9 A schematic diagram of an endoscope being guided by a sliding rail during surgery.

[0062] In the figure: 1. Sleeve segment; 2. Fixing component; 3. Spreader; 31. Main body; 32. Inner support; 321. Inner support part; 322. Adjustment part; 33. Height adjustment mechanism; 4. Holder; 5. Slide rail. Detailed Implementation

[0063] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0064] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0065] Example 1: A combined medical cannula system, see attached document. Figure 1 -Appendix Figure 9 The device includes a sleeve assembly, a fixing component 2, a spreader 3, and a retainer 4. The sleeve assembly consists of two sleeve pieces 1 that can be combined to form a complete sleeve. The fixing component 2 is detachably connected to the sleeve assembly and can lock the two sleeve pieces 1 into a complete sleeve when fixed to the sleeve assembly. The spreader 3 is detachably connected to the two sleeve pieces 1 to spread the two sleeve pieces 1 when the fixing component 2 is detached from the sleeve assembly. The retainer 4 is used to connect to the two spread sleeve pieces 1 respectively to support the two spread sleeve pieces 1.

[0066] The cannula assembly is configured as two separable cannula pieces 1. During actual surgery, when it is necessary to expand the working channel, the two cannula pieces 1 can be expanded simply by installing the spreader 3. The fixing component 2 ensures the stability of the two cannula pieces 1 when they are attached together to form a complete cannula; while the retainer 4 can fix and support the position of the two cannula pieces 1 after they are expanded, ensuring that there is no risk of retraction or displacement during the operation.

[0067] Specifically, the fixing component 2 includes a locking member and a connecting member. The locking member is detachably connected to the two sleeve pieces 1 respectively. There are two connecting members, each used to detachably connect the locking member to the two sleeve pieces 1 respectively.

[0068] Specifically, the connector is set as a snap, latch, or screw lock block; the connector only needs to be able to connect the locking member to the sleeve piece 1. The snap, latch, and screw lock block in this embodiment are just examples. Any structure that can achieve the connection between the locking member and the sleeve piece 1 is within the protection scope of this application.

[0069] Specifically, a positioning element for positioning is also provided between the locking element and the sleeve piece 1. The positioning element is configured as a positioning protrusion and a positioning groove respectively provided on the outside of the locking element and the sleeve piece 1.

[0070] The positioning element makes it easier and faster to fix the locking element on the sleeve piece 1.

[0071] Specifically, the expander 3 includes an inner support member 32 and a driving mechanism. There are two inner support members 32, which can be detachably connected to two sets of tube segments 1 respectively. The driving mechanism is used to drive the two inner support members 32 to move in directions away from each other.

[0072] Specifically, the expander 3 also includes a main body 31, and the top ends of the two inner support members 32 slide on the main body 31 to support and guide the two inner support members 32 through the main body 31. The drive mechanism is disposed on the main body 31.

[0073] Specifically, the drive mechanism is configured with a rack, pinion, or threaded connection to push the two inner support members 32 to slide. The drive mechanism only needs to be able to move the two inner support members 32 in directions that move away from or towards each other. The different connection methods described in this embodiment are merely illustrative examples. Any drive mechanism capable of moving the two inner support members 32 in directions that move away from or towards each other is within the scope of protection of this application.

[0074] Specifically, one of the inner support members 32 is configured as an adjustable inner support member 32; the adjustable inner support member 32 includes an inner support part 321 and an adjusting part 322, the inner support part 321 is directly connected to the sleeve piece 1; the adjusting part 322 is connected to the main body part 31 and slides on the main body part 31 under the drive of the driving mechanism; the inner support part 321 can slide on the adjusting part 322 to adjust the position of the sleeve piece 1 along the length direction of the sleeve piece 1.

[0075] By adjusting the setting of the inner support member 32, before the two sets of tube segments 1 are spread apart, one set of tube segments 1 can be pushed downward by adjusting the adjustment part 322 so that the bottom ends of the two sets of tube segments 1 are aligned, thereby ensuring that soft tissue will not enter the expansion area after spreading apart.

[0076] Specifically, the inner support member 32 is provided with a height adjustment mechanism 33 for adjusting the height of the adjustment part 322; the height adjustment mechanism 33 is used to fix and loosen the adjustment part 322 on the inner support member 321, and the height adjustment mechanism 33 is configured as a snap-on or screw structure.

[0077] Specifically, the retainer 4 can be configured with multiple components of different widths, or as an independent component with adjustable width. If configured as a component, multiple retainers 4 of different widths are used to fix the sleeve segments 1 when they are spread apart by different distances. If configured as an independent component with adjustable width, the width of the retainer 4 can be adjusted according to the spread distance of the two sleeve segments 1, allowing a single retainer 4 to adapt to various spread distances.

[0078] Specifically, when the retainer 4 is configured as an independent component with adjustable width, the width adjustment of the retainer 4 is achieved by a screw structure.

[0079] Specifically, the maintainer 4 is provided with positioning parts for positioning the two sets of tube segments 1 respectively. The positioning parts are inserted between the two sets of tube segments 1, and / or, the positioning parts are provided with protrusions or grooves that cooperate with the grooves or protrusions of the tube segments 1.

[0080] Specifically, this embodiment also includes a slide rail 5, which is detachably connected to the sleeve piece 1 and / or the retainer 4; the slide rail 5 is provided with a sliding contact surface for guiding the endoscope to move in place and for holding and sliding.

[0081] Example 2: A method of using a combined medical cannula system, comprising the following steps;

[0082] S01. Install the spreader 3: Fix the two inner support members 32 of the spreader 3 onto the two sets of pipe segments 1 respectively;

[0083] S02, Remove the lock: Remove the fixing component 2 from the two sets of segments 1;

[0084] S03, Spreading the tube segment 1: Operate the drive mechanism of the spreader 3, and drive the two inner support members 32 to drive the two tube segments 1 to spread them apart to achieve the required gap in the surgery.

[0085] S04, Install the retainer 4: Fix the retainer 4 on the two sets of segments 1;

[0086] S05. Remove the spreader 3: Remove the two inner support members 32 of the spreader 3 from the two sets of pipe segments 1 respectively.

[0087] Specifically, this embodiment also includes step S06, which is set after step S05;

[0088] Step S06, Fixing the slide rail 5: Fix the slide rail 5 to the two sets of tubes 1 and / or the retainer 4 to guide the endoscope to move and slide.

[0089] Specifically, step S021 is provided between step S02 and step S03;

[0090] Step S021, Adjusting the height: The height adjustment mechanism 33 engages the locking mechanism of the adjustment part 322, thereby pushing the sleeve piece 1 connected to the adjustment part 322 downward by a specific distance to align the lower ends of the two sleeve pieces 1, and then locking the adjustment part 322 by the height adjustment mechanism 33.

[0091] By setting the steps in step S021, it can be ensured that the soft tissue will not enter the expansion area after it is stretched.

[0092] Specifically, this embodiment also includes step S07, which is set after step S06;

[0093] Step S07, casing system removal: Complete the removal of the casing system by reversing the operations from S01 to S06.

[0094] Specifically, step S07 includes the following steps:

[0095] S071. Remove slide rail 5;

[0096] S072, Install the expansion device 3;

[0097] S073, Remove retainer 4;

[0098] S074. Operate the drive mechanism to bring the two sets of tube segments 1 closer together to form a complete tube;

[0099] S075, Install and fix component 2;

[0100] S076. Remove the pry bar 3;

[0101] S077. Take out the two sets of tubes that have been assembled together.

[0102] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A combined medical cannula system, characterized in that: Includes a sleeve assembly, which consists of two sleeve pieces (1) that can be combined to form a complete sleeve; Fixing component (2), which is detachably connected to the sleeve assembly, and when the fixing component (2) is fixed to the sleeve assembly, it can lock and fix the two sleeve pieces (1) into a complete sleeve; A spreader (3) is detachably connected to the two sets of tube segments (1) to spread the two sets of tube segments (1) when the fixing assembly (2) is disengaged from the sleeve assembly; And a support (4), which is used to connect to the two sets of tube segments (1) after they are spread out to support the two sets of tube segments (1) after they are spread out.

2. The combined medical cannula system according to claim 1, characterized in that: The fixing component (2) includes a locking element, which is detachably connected to the two sleeve pieces (1); And connectors, two of which are provided and are used to detachably connect the locking member to the two sleeve pieces (1).

3. A combined medical cannula system according to claim 2, characterized in that: The connector is configured as a snap, latch, or screw lock block.

4. A combined medical cannula system according to claim 3, characterized in that: A positioning element for positioning is also provided between the locking element and the sleeve piece (1). The positioning element is configured as a positioning protrusion and a positioning groove respectively provided on the outside of the locking element and the sleeve piece (1).

5. A combined medical cannula system according to claim 1, characterized in that: The expander (3) includes an inner support (32), and there are two inner support (32) which can be detachably connected to two sets of pipe segments (1) respectively. And a drive mechanism for driving the two inner supports (32) to move in mutually distant directions.

6. A combined medical cannula system according to claim 5, characterized in that: The expander (3) also includes a main body (31), the top ends of the two inner support members (32) slide on the main body (31) to support and guide the two inner support members (32) through the main body (31), and the drive mechanism is disposed on the main body (31).

7. A combined medical cannula system according to claim 5, characterized in that: The drive mechanism is configured to use a rack, screw, or threaded connection to push the two inner support members (32) to slide.

8. A combined medical cannula system according to claim 6, characterized in that: One of the inner support members (32) is configured as an adjustable inner support member (32); The adjustable inner support (32) includes an inner support part (321), which is directly connected to the sleeve piece (1); And an adjustment part (322), which is connected to the main body part (31) and slides on the main body part (31) under the drive of the drive mechanism; The inner support (321) can slide on the adjustment part (322) to adjust the position of the sleeve piece (1) along the length direction of the sleeve piece (1).

9. A combined medical cannula system according to claim 8, characterized in that: The adjustable inner support (32) is provided with a height adjustment mechanism (33) for adjusting the height of the adjustment part (322); The height adjustment mechanism (33) is used to fix and loosen the adjustment part (322) on the inner support part (321), and the height adjustment mechanism (33) is configured as a snap or screw structure.

10. A combined medical cannula system according to claim 1, characterized in that: The maintainer (4) is provided with multiple components of different widths, or is provided as an independent component with adjustable width.

11. A combined medical cannula system according to claim 10, characterized in that: The retainer (4) is configured as an independent component with adjustable width, and the width adjustment of the retainer (4) is achieved by a screw structure.

12. A combined medical cannula system according to claim 10, characterized in that: The maintainer (4) is provided with a positioning part for positioning the two sets of tube segments (1) respectively. The positioning part is inserted between the two sets of tube segments (1), and / or, the positioning part is provided with a protrusion or groove that cooperates with the groove or protrusion of the tube segment (1).

13. A combined medical cannula system according to claim 1, characterized in that: It also includes a slide rail (5) which is detachably connected to the sleeve piece (1) and / or the retainer (4); The slide rail (5) is provided with a sliding contact surface for guiding the endoscope to move in place and for holding it in place.

14. A method of using a combined medical cannula system according to any one of claims 1-13, characterized in that: Includes the following steps; S01. Install the spreader (3): Fix the two inner support members (32) of the spreader (3) onto the two sets of pipe segments (1) respectively; S02, Remove the lock: Remove the fixing component (2) from the two sets of segments (1); S03, Spreading the tube segments (1): The drive mechanism of the spreader (3) is operated to push the two inner support members (32) to drive the two tube segments (1) to spread them apart to achieve the required gap in the surgery. S04, Install the retainer (4): Fix the retainer (4) on the two sets of segments (1); S05, Remove the spreader (3): Remove the two inner support pieces (32) of the spreader (3) from the two sets of segments (1) respectively.

15. The method of using a combined medical cannula system according to claim 14, characterized in that: It also includes step S06, which is set after step S05; Step S06, Fixing the slide rail (5): Fix the slide rail (5) on the two sets of tubes (1) and / or the retainer (4) to guide the endoscope to move and slide.

16. The method of using a combined medical cannula system according to claim 14, characterized in that: A step S021 is also provided between step S02 and step S03; Step S021, Adjusting the height: The height adjustment mechanism (33) engages the locking of the adjustment part (322), thereby pushing the sleeve (1) connected to the adjustment part (322) downward by a specific distance to achieve alignment of the lower ends of the two sleeves (1), and then locking the adjustment part (322) by the height adjustment mechanism (33).

17. The method of using a combined medical cannula system according to claim 15, characterized in that: It also includes setting step S07 after step S06; Step S07, casing system removal: Complete the removal of the casing system by reversing the operations from S01 to S06.

18. The method of using a combined medical cannula system according to claim 17, characterized in that: Step S07 includes the following steps: S071, Remove the slide rail (5); S072, Install the spreader (3); S073, Remove the retainer (4); S074. Operate the drive mechanism to drive the two sets of tube segments (1) to move closer to each other to form a complete tube; S075, Install and fix the components (2); S076, Remove the spreader (3); S077. Take out the two sets of tubes that have been assembled together.

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